1、Magnetic coagulation coagulation (high-efficiency sedimentation) sedimentation technology is the synchronous addition of magnetic particles with a specific gravity of 4.8-5.1 in traditional coagulation sedimentation processes, which are combined with pollutant flocculation to enhance the coagulation and purple coagulation effects, resulting in a higher density and stronger purple body, thus achieving the goal of high-speed sedimentation. The settling speed of magnetic flocs can reach over 40m/h. Magnetic particles are recycled and reused through high shear machines and magnetic separators.
The residence time of the entire process is very short, so the probability of reverse dissolution process occurring for most pollutants, including TP, is very low. In addition, the magnetic powder and flocculant added in the system have good adsorption effects on bacteria, viruses, oil, and various small particles. Therefore, the removal effect of these pollutants is better than traditional processes, especially for phosphorus and SS removal. Meanwhile, due to its high-speed sedimentation performance, it has many advantages compared to traditional processes, such as fast speed, high efficiency, small footprint, and low investment. The magnetic mixed flocculation (high-efficiency sedimentation) sedimentation technology is a revolutionary new technology.
The magnetic mixed flocculation (high-efficiency sedimentation) sedimentation technology originated in the United States. Previously, the practical application of magnetic mixed flocculation (high-efficiency sedimentation) sedimentation technology in water treatment engineering was very limited, because the problem of magnetic particle recovery has not been well solved. Now this technical challenge has been successfully solved, and the magnetic particle recovery rate can reach over 99%. This fully reflects the technical and economic advantages of the magnetic coagulation (high-efficiency precipitation) precipitation process, which has been increasingly widely applied at home and abroad. At present, China has gradually implemented the engineering application of this technology in urban sewage treatment, reclaimed water reuse, river black and foul water treatment, high phosphorus wastewater treatment, papermaking wastewater treatment, oilfield wastewater, and mine wastewater treatment, and has achieved good results.
2、Basic Principles of Magnetic Mixing Flocculation (Efficient Precipitation) for Water Purification
Magnetic coagulation and sedimentation technology is the simultaneous addition of magnetic particles in the coagulation and sedimentation process, which integrates them with pollutant flocculation to enhance the coagulation and flocculation effects, making the generated flocs denser and stronger, thus achieving the goal of high-speed sedimentation. Magnetic particles can be recycled and reused through magnetic drums.
The residence time of the entire process is very short, so the probability of reverse dissolution process occurring for most pollutants, including TP, is very low. In addition, the magnetic powder and flocculant added in the system have good adsorption effect on bacteria, viruses, oil, and various small particles, so the removal effect of these pollutants is better than traditional processes. Meanwhile, due to its high-speed sedimentation performance, it has many advantages compared to traditional processes, such as fast speed, high efficiency, small footprint, and low investment.
Principle 1. Use magnetic adsorption to remove ferromagnetic suspended solids from metallurgical, mine or mining wastewater, and purify water bodies.
Principle 2: By using water treatment agents, non magnetic suspended solids in wastewater are coagulated with added magnetic particle flocs to form magnetic flocs. Magnetic adsorption is used to remove the magnetic flocs and purify the water body; Magnetic powder is separated from water pollutants and recycled for use.
The Role of Magnetic Particles
① Assisting sedimentation: Magnetic mixing flocculation (high-efficiency sedimentation) technology adds magnetic powder to conventional flocculation sedimentation, with a specific gravity of 4.8-5.1. The magnetic powder can combine with the floc, thereby increasing the specific gravity of the floc and greatly increasing the sedimentation rate.
② Adsorption: The surface of the magnetic powder is irregular and has a certain physical adsorption effect. In addition, the surface charge adsorption can also play a partial role.
③ Catalysis: Due to the micro magnetic field on the surface of the micro magnetic powder, it can play a certain catalytic role in the removal of organic phosphorus.
④ Recyclable: The main component of magnetic powder is Fe3O4, arranged in an disordered manner. The magnetic powder itself does not have magnetism, but can conduct magnetism and be recovered through magnetic force. In addition, other chemical properties are stable and will not dissolve or undergo other reactions in water.
Equipment characteristics
1. The settling speed is fast, reaching a high settling speed of 40m/h;
2. High surface load, up to 20m ³/ ㎡ h~40m ³/ ㎡ h;
3. Short retention time, from inlet to outlet, can be as low as 20 minutes (in some cases, the retention time can be shorter);
4. Effectively reduce the floor area of the sedimentation tank, which can be as low as 1/20 of the conventional process;
5. Efficient phosphorus removal, with optimal effluent TP as low as 0.05mg/L;
6. The effluent has high transparency and turbidity<1 NTU;
7. High SS removal rate, optimal effluent<2mg/L;
8. Magnetic powder recycling, with a recovery rate of over 99% and low operating costs;
9. Effectively optimize the dosage of chemicals, reduce operating costs, and in the best case, save 15% of the dosage;
10. The system is compact (can also be made into a mobile processing device), which can achieve automatic control and is easy to operate.
3、 Advantages of magnetic coagulation sedimentation technology
(1) Small footprint: The system has a high degree of integration, and the investment of magnetic loading materials leads to a fast settling speed of the flocs, thereby reducing the device volume and overall footprint, which is more than 15 times smaller than the conventional process footprint; The area of a single set of 30000 m3/d scale loading coagulation magnetic separation system is about 300m2.
(2) Mobility: With high integration, the device can be made into on-board or shipborne mobile devices, making it very suitable for water treatment in various fields such as emergency events, rural domestic sewage, and drinking water.
(3) Quick effect: fast settling speed, short residence time, fast start-up time, less than 20 minutes of inlet and outlet water in the entire system, and good treatment effect. It can efficiently remove various pollutants, and its effluent quality can be comparable to that of ultrafiltration membrane effluent, especially for total phosphorus (TP) in water bodies, which can reach<0.2mg/L.
(4) Low investment: The system is simple, covers a small area, mobile equipment does not require land approval, has a short construction cycle, and can be retrofitted on top of the existing equipment, greatly reducing investment costs.
(5) Low operating cost: The system has low energy consumption, simple equipment maintenance, and advanced magnetic separation and recovery device allows for complete recovery of magnetic substances. The efficient sludge reflux system reduces the dosage of reagents, which can effectively reduce operating costs.
In addition, compared to other processes, magnetic separation technology has the following advantages:
(1) This process can effectively treat primary, secondary, and tertiary urban wastewater, as well as reclaimed water, various industrial wastewater, and drinking water.
(2) The surface load can reach 20m3/m2h to 40m3/m2h.
(3) Sludge is highly compressed and has a high concentration
(4) The service life of the equipment is long, and in addition to normal maintenance, there is no need to replace components, resulting in high secondary investment (membrane process operation and maintenance costs are estimated to be more than 1.3 times the cost of loading the coagulation magnetic separation system).
(5) It has strong impact resistance to water quality and quantity, and the peak flow rate in a short period of time can reach 1.5 times the average flow rate. When there is a significant fluctuation in the inlet water quality or other harmful metal ions enter the magnetic separation system, the system can still maintain a high removal efficiency and significantly remove pollutants from the water.
(6) If the total phosphorus index continues to improve in the future, there is no need to increase investment in the construction of new facilities. Simply use the existing loading coagulation magnetic separation system and increase the dosage of flocculant during operation to meet the requirements, even reaching the US standard TP ≤ 0.2ppm.
4、 Magnetic powder recycling equipment
a. Magnetic seed loading: Different levels of magnetic seeds are used for different water bodies, with magnetic seeds as carriers. Under the action of coagulants and coagulants, the suspended solids in the water body are made to have micro magnetism.
b. Reagent dosing: coagulants and coagulants aids commonly used in water treatment, such as Aluminium chlorohydrate (PAC), Aluminium chlorohydrate iron (PAFC), polymeric Iron(III) sulfate, polyacrylamide (PAM), etc.
c. Magnetic seed recycling: The dispersion, demagnetization, and separation of magnetic sludge flocs are achieved through a magnetic seed recycling system, and the recovered magnetic seeds are recycled for use.
5、 Application field
● Industrial wastewater treatment: mine water in the coal industry, graphite containing steel rolling wastewater in the metallurgical industry and general drainage from the steel plant, common water treatment at oil recovery and reinjection points in the oil industry, and pretreatment and fine treatment of paper making wastewater;
● Sewage treatment: primary enhanced treatment of sewage, upgrading and renovation of sewage treatment plants, deep dephosphorization treatment of concentrated wastewater from sewage treatment plants, and membrane pre-treatment of reclaimed water reuse;
● Public water purification: turbidity reduction, algae removal, and phosphorus removal of river water, landscape water, and lake water
● Water supply pre-treatment: pre-treatment of domestic and industrial water sources
Emergency response: emergency response to water pollution accidents
6、 Composition of magnetic flocculation equipment:
The water to be treated in the rapid coagulation zone is distributed by the water distribution system and reaches the rapid stirring coagulation zone. Iron salt or aluminum iron are added as coagulants near the blades of the mixer. Quickly and evenly disperse the coagulant into the water, which is conducive to the hydrolysis of the coagulant and fully utilizes the high charge of the coagulant to neutralize and destabilize the colloid in the water, causing small particles to gather together.
Add an appropriate amount of magnetic powder into the magnetic powder loading area. The small particles serve as crystal nuclei, making it easier to form alum, greatly increasing the proportion of alum. At the same time, under the mutual attraction between magnetic particles, large particles and high-density flocs are quickly formed, accelerating the sedimentation rate.
The sludge returning from the bottom of the sedimentation zone is pumped to the magnetic particle loading zone. The purpose of adding circulating sludge is to contact the Suspended solids of the raw sewage with the sludge in the system to increase the formation of flocs, and also to recycle the magnetic particles in the system.
The sewage in the flocculation area flows from the magnetic particle loading area to the flocculation area. In order to further form larger and denser flocs of solid suspended solids, it is necessary to add polymer flocculants in the flocculation zone. Flocculants have an adsorption bridging effect, causing small particles to gradually form larger flocs, facilitating solid-liquid separation, and effectively removing suspended substances and colloids in water.
The sewage from the sedimentation zone flows into the sedimentation zone after passing through the flocculation zone. The sedimentation zone utilizes the principle of shallow sedimentation and adopts inclined pipes, which significantly increases the surface hydraulic load of the sedimentation zone.
The flow direction of sewage in the sedimentation zone is upward, with particles settling and settling at the bottom of the tank. The mud scraper driven by the center scrapes the sludge from the bottom of the tank towards the bottom and falls into the mud hopper. The sludge pumped out from the sludge hopper and sent to the magnetic particle loading area by the sludge circulating pump is called circulating sludge. The remaining sludge is pumped to a magnetic separator for magnetic particle recycling and reuse, and then sent to the sludge treatment process.
The magnetic mud shear machine further optimizes the design of the quick shear zone, and the dual shear knives set inside the cylinder generate high-speed collisions to form a true high-speed shear effect, thereby dispersing the magnetic powder or sludge.
Function of magnetic particle separation equipment: suitable for recovering specific particle size, grade, and quality magnetic particles from a certain concentration of sludge slurry.
7、 Design principles of magnetic flocculation equipment
In order to manage river pollution as economically and economically as possible, in accordance with technical and economic feasibility, and to achieve certain governance goals, the following design principles are reflected:
1. In engineering design, the current norms and standards of both myself and the local government will be strictly implemented.
2. Adopting a process that prioritizes technology, reliable operation, and simple operation and management, organically combines efficiency and reliability.
3. Adapt to local conditions, fully consider the rationality of the selected process, and effectively control the process cost.
4. Utilize energy-saving governance processes to save energy and minimize operating costs.
5. The system equipment is simple, the construction cycle is short, the effectiveness is fast, and maintenance is convenient. Under the premise of effective governance, the goal of "three low" (low investment, low operating costs, and low technical management requirements) is achieved.
Important auxiliary equipment: high shear machine
Technical features:
A adopts a variable frequency motor with adjustable speed;
B adopts imported mechanical seals for better wear resistance and longer service life;
The C overcurrent components and shear mechanism are made of non-metallic materials to ensure long-term operation of the high shear function:
D revolutionary uses non-metallic inner villages and non-metallic shear plates, with high wear resistance.
Product parameters |
product name FL series magnetic separator |
Water treatment capacity 1000~20000m3/d |
Installed power 12~20KW |
cover an area 15~90m2 |
Applicable scenarios Municipal sewage upgrading and renovation, black and odorous water treatment |
Technical parameters: |
Magnetic roller size | Maximum sludge flow rate | speed | power |
Ф400×600 | 8m3/h | 5~17r/min | 380V 1.5KW |
Ф400×1000 | 14m3/h | 5~25r/min | 380V 2.2KW |
Ф600×600 | 12m3/h | 5~17r/min | 380V 2.2KW |
Ф600×1000 | 20m3/h | 5~25r/min | 380V 2.2KW |
Ф900×1000 | 30m3/h | 5~25r/min | 380V 3KW |
Integrated magnetic coagulation process equipment selection: |
model | processing capacity（m3/d) | Overall dimensions （L×W×H)m | Number of main units | total power （KW) | Operating weight (T) | Inlet and outlet water indicators |
FLYC-25 | 25 | 3×1.5×3 | 1 | 9 | 20 | The inflow is conventional domestic sewage; The effluent meets the first level A or B standards of GB1818918-2002 "Pollutant Discharge Standards for Urban Sewage Treatment Plants". |
FLYC-50 | 50 | 3.5×1.5×3 | 1 | 9 | 22 |
FLYC-100 | 100 | 4×2×3 | 1 | 11 | 30 |
FLYC-150 | 150 | 4.5×2×3 | 1 | 11 | 33 |
FLYC-200 | 200 | 5×2.5×3 | 1 | 11 | 35 |
FLYC-250 | 250 | 5.5×2.5×3 | 1 | 13 | 40 |
FLYC-300 | 300 | 6×2.5×3 | 1 | 13 | 45 |
Configuration list of magnetic coagulation equipment:
Device Name | Specification and model | number | unit |
FLMag Installation body | FLZYM-2000TPD
Q235B anticorrosive L×B×H=12000×3000×3000 | 2 | cover |
PAC Coagulation reaction tank | FLMag-PAC | 2 |
Supporting mixing system | FLJB-MX-1100 Submerged SS304 | 2 |
Supporting reducer | N=2.2KW 380V/50HZ | 2 |
Magnetic particle loading reaction tank | FLMag-CZ | 2 |
Supporting mixing system | FLJB-MX-1100 Submerged SS304 | 2 |
Supporting reducer | N=2.2KW 380V/50HZ | 2 |
PAM Flocculation reaction tank | FLMag-PAM | 2 |
Supporting mixing system | FLJB-MK-1700 Submerged SS304 | 2 |
Supporting reducer | N=2.2KW 380V/50HZ | 2 |
Magnetic separation equipment | FLMag-500 | 2 |
Supporting reducer | N=0.75KW 380V/50HZ | 2 |
shears | FLGJ-M-500 N=0.55KW | 2 |
Reciprocating mud scraper | FLGN-W-2800 Submerged SS304 | 2 |
Supporting hydraulic station | FAT-8T N=1.5KW | 2 |
Magnetic mixed sludge pump | 1.5/1B-AH rubber
Q=7m3/h H=6m N=2.2KW | 2 |
Inlet flow meter | KFCX-DN150 | 2 |
Sludge reflux flow meter | KFCX-DN50 | 2 |
Sludge recovery flow meter | KFCX-DN40 | 2 |
Automatic sludge reflux valve | DN50 SS304 | 2 |
Automatic sludge recovery valve | DN40 SS304 | 2 |
PAC Dosing device | FLJY series | 2 |
PAC Metering pump | VAMd07063
Q=63L/H P=0.7MPa | 2 |
PAC Preparation unit | FLPAC-1000L barrel PE
FLJB-0.2 0.75KW Plastic lining | 2 |
PAM Dosing device | FLPAM series | 2 |
PAM Metering pump | VAMd04120
Q=120L/H P=0.4MPa | 2 |
PAM Preparation unit | FLJY-200L barrelbarrel PE
FLJB-0.2 0.35KW Plastic lining | 2 |
Intelligent cloud control system | FLZK series | 1 |
PLC Cloud Control | S7 series | 1 |
Power control system | FLZK-D series | 1 |
Supporting frequency converter | Model: matching | 2 |
Supporting cables | Model: matching | 1 | lots |
Magnetic coagulation
The process principle of magnetic coagulation
1. The process principle of magnetic coagulation technology is to add magnetic seeds in the traditional flocculation mixed sedimentation process to enhance the flocculation effect, form high-density flocs, and increase the specific gravity of flocs, achieving the goal of efficient pollution removal and rapid sedimentation.
Magnetized coagulation permanent magnet rotary disc purification equipment
2. According to the ion polarity and metal characteristics of the magnetic seed, as the core of the floc, it greatly strengthens the flocculating ability of suspended pollutants in the water, reduces the amount of flocculant, and has better effect than the traditional process in removing suspended solids, especially in removing phosphorus, bacteria, viruses, oil, heavy metals, etc.
3. Due to the high specific gravity of magnetic seeds up to 5. O × 103kg/m3, with an increase in the specific gravity of the floc mixed with magnetic seeds, can quickly settle the floc. The entire water treatment process can be completed in about 15 minutes from inlet to clear liquid outlet. The magnetic seeds in the sludge are separated using rare earth permanent magnet drums based on their own characteristics and recycled in the system. To achieve the goal of highly purified effluent and reducing wastewater treatment costs.
Magnetic coagulation equipment
Magnetic coagulation and sedimentation technology is the synchronous addition of magnetic particles with a specific gravity of 4.8-5.1 in traditional coagulation and sedimentation processes, which are combined with pollutant flocculation to enhance the coagulation and flocculation effects, making the generated flocs denser and stronger, and achieving high-speed sedimentation. The settling speed of magnetic flocs can reach over 40 m/h. The magnetic powder is recycled and reused through a high shear machine and a magnetic seed catcher (magnetic separator).
The residence time of the entire process is very short, so the probability of reverse dissolution process occurring for most pollutants, including TP, is very low. In addition, the magnetic powder and flocculant added in the system have good adsorption effects on bacteria, viruses, oil, and various small particles. Therefore, the removal effect of these pollutants is better than traditional processes, especially the phosphorus removal effect is particularly significant. Meanwhile, due to its high-speed sedimentation performance, it has many advantages compared to traditional processes, such as fast speed, high efficiency, small footprint, and low investment. Magnetic coagulation precipitation technology is a revolutionary new technology.
Magnetic coagulation precipitation
The following is a brief introduction to the characteristics of electromagnetic flocculation sewage treatment equipment, hoping to be helpful to everyone.
1. Short processing time, fast speed, and large processing capacity. A magnetic force with a specific gravity of 640 times greater is immediately generated in the disk. High processing efficiency, short process, and short total processing time. Multiple units are feasible to operate and meet the requirements of high flow processing.
2. Small footprint and stable effluent. The floor area is approximately 1/8 of the traditional flocculation sedimentation area, with a flocculation time of 1 minute and 2 minutes, and an average flow rate of 320 meters/hour.
3. High sludge concentration. The disk directly and strongly adsorbs sludge, continuously discharging the equipment. High concentration sludge is obtained through a slag removal system.
4. Adopting magnetic coagulation technology, it has low operating costs, low usage, high magnetic recovery and utilization rate, and low operating costs.
5. Convenient daily maintenance, no need for equipment backwashing, high degree of automation, and stable and reliable operation.
Magnetic coagulation equipment
The so-called magnetic coagulation and sedimentation technology is the synchronous addition of magnetic particles in ordinary coagulation and sedimentation processes, making them integrated with pollutant flocculation to strengthen the coagulation and flocculation effects, making the generated flocs denser and stronger, and thus achieving the goal of high-speed sedimentation. Magnetic particles can be recycled and reused through magnetic drums. The residence time of the entire process is very short, so the probability of reverse dissolution process occurring for most pollutants, including TP, is very low. In addition, the magnetic powder and flocculant added in the system have good adsorption effect on bacteria, viruses, oil, and various small particles, so the removal effect of these pollutants is better than traditional processes. Meanwhile, due to its high-speed sedimentation performance, it has many advantages compared to traditional processes, such as fast speed, high efficiency, small footprint, and low investment.
Strong magnetic separator
Magnetic coagulation equipment is a water treatment technology that super removes TP, SS, COD, and heavy metals. It is suitable for municipal sewage upgrading and renovation, black and odorous river regulation, deep phosphorus removal, turbidity removal, suspended solids removal, and other fields of industrial wastewater.
The technology is based on traditional flocculation and sedimentation technology, adding high density recyclable magnetic powder as a carrier to improve the settling speed of the floc in the clarification tank, and the treatment efficiency can reach more than 20 times that of traditional technology. At the same time, improve the treatment effect of pollutants through its own catalysis and adsorption; It has the advantages of fast settling speed, high surface compliance, small footprint, good treatment effect, and portability.
Mainly including magnetic flocculation reaction process, high-speed settling solid-liquid separation process, and magnetic particle recovery process. The magnetic flocculation reaction process mainly combines the flocs formed by pollutants with magnetic particles to form large and dense magnetic flocs. The high-speed sedimentation solid-liquid separation process relies on the specific gravity of the magnetic flocs themselves to form a sedimentation rate of over 40m/h in the sedimentation tank, thereby quickly separating pollutants from the water body. The magnetic powder recycling process mainly involves separating the magnetic powder and residual sludge through a high shear machine and entering the magnetic separator, which then recycles the magnetic powder into the loading reaction tank for recycling.
Technical parameters of magnetic coagulation equipment
Specification and model | Processing capacity: m3/h | Motor power: kW | Overall dimensions (length × wide × Height) m |
FLCFH--10 | 10 | 1.1 | 1600×1000×1800 |
FLCFH--20 | 20 | 1.1 | 1600×1300×1800 |
FLCFH--30 | 30 | 2.2 | 1600×1600×1800 |
FLCFH--40 | 40 | 3 | 1600×1900×1800 |
FLCFH--56 | 56 | 4 | 1600×2200×1800 |
FLCFH--65 | 65 | 4 | 1600×2600×1800 |
Magnetic flocculation equipment
Do you have any understanding of magnetic flocculation equipment? Here is an introduction to the characteristics of magnetic flocculation equipment, hoping to be helpful to you.
1. Short processing time, fast speed, and high processing power. The disk immediately generates a magnetic force 640 times larger than the disk, resulting in high processing efficiency, short processing time, and total processing time. Multiple units can run in parallel to meet the requirements of high flow processing.
2. Small footprint, stable effluent, covering an area of 1 ≤ 8 for traditional flocculation sedimentation, with a setting time of 1 minute, a flocculation time of 2 minutes, and an average flow rate of 320 m/h.
3. The sludge concentration is high, and the disc directly strongly adsorbs the sludge, continuously releasing the equipment, and obtaining high concentration sludge through the slag removal system.
4. Adopting magnetic flocculation technology, the operating cost is low, the dosage is small, the magnetic circulation utilization rate is high, and the operating cost is low.
The magnetic flocculation equipment is easy to maintain daily, without equipment backwashing, with a high degree of automation and stable and reliable operation.
Efficient magnetic separator
Magnetic separation technology is based on the traditional flocculation and sedimentation process, which increases the addition of magnetic powder and mixes and co settles the magnetic powder and floc through the magnetic particle loading reaction tank. The magnetic powder is recycled and reused through equipment such as high shear machines and magnetic separators.
Magnetic separation technology can remove settleable particles and other water pollutants. Its system is reliable, simple, and compact, making it a highly effective and low-cost process for treating rivers, lakes, and landscape water. Magnetic separation technology increases the specific gravity of the flocs by adding magnetic particles to the water, effectively increasing the settling speed, increasing the surface load of the settling tank, shortening the effective residence time, reducing the floor area of the entire treatment process, and also saving construction costs. Its effluent effect is good, with good removal effects for SS, TP, COD, BOD, etc. The sewage treatment system developed with this technology has made achievements in river and lake water body treatment fields such as river blackness and odor treatment, river Eutrophication treatment, river water quality maintenance, lake water quality improvement, landscape water body maintenance, and has made outstanding contributions to China's water environment treatment.
Magnetic flocculation equipment
Currently, the removal rate of CODCr by traditional coagulation precipitation is only about 10%. It's still rare. But now, after using magnetic flocculation and magnetic separation technology for treatment, the CODCr removal effect has significantly increased, as it can reach around 30%.
For example, the treatment of supplementary water for cooling circulation in power plants usually adopts the flocculation sedimentation process, but its floc settling property is very poor. Therefore, we use a mechanical stirring clarification tank, which occupies a large area and incurs relatively high civil construction costs. So it is very suitable for retrofitting existing water treatment systems in power plants.
Magnetic flocculation precipitation
Magnetic flocculation and magnetic separation process, which is based on traditional flocculation sedimentation process, also includes magnetic particle loading reaction tank, high shear device, magnetic separator, and other equipment. Now, in addition to improving settling speed, magnetic flocculation technology also provides high-quality effluent and reduces floor area. After removing both of these factors, the most important thing is that it can also optimize and reduce the original dosage by 50%. Moreover, it can also remove suspended solids while adding appropriate medication, making it more advantageous for the removal of total phosphorus. And the wastewater treatment plant in Co ncord, Massachusetts, USA has been using magnetic flocculation and magnetic separation processes as advanced treatment systems since 2007, because its effluent stability reaches SS<5 mg/L, total phosphorus<0.2 mg/L, and the magnetic particle recovery rate can also reach as high as 99.5%.
Magnetic coagulation precipitation
Magnetic flocculation is generally mainly used in the fields of water supply and sewage treatment, and is based on its chemical composition. Magnetic flocculation can be divided into inorganic flocculants and organic flocculants. Among them, inorganic flocculants include inorganic flocculants and inorganic polymer flocculants, while organic flocculants include synthetic organic polymer flocculants, natural organic polymer flocculants, and microbial flocculants.
Magnetic flocculation
Magnetic coagulation high-efficiency sedimentation system
The magnetic coagulation system adds flocculants, magnetic seeds, and coagulants to the mixing reaction tank for magnetic coagulation reaction; Enter the clarification tank for efficient solid-liquid separation; The sludge containing high concentration magnetic particles in the clarification tank is lifted to the high shear machine and magnetic separator through a magnetic mud crushing pump to separate the magnetic particles from the sludge, and the magnetic particles are returned to the mixed reaction tank to continue participating in the reaction. The remaining sludge after separation is discharged into the sludge tank for the next step of sludge concentration and dehydration treatment.
Shear machine
At present, the development and gradual application of new technologies have played a good role in many production applications, including the selection and use of basic raw materials, which have played a very good role in the design and manufacturing of various new equipment. Nowadays, the use of equipment has achieved intelligent control mode. Therefore, in the production and manufacturing of high-speed shear machines, corresponding equipment software will also be matched, This can better control and use the equipment.
Good practicality characteristics
Through the design of intelligent application control systems, the high-speed shear machine has achieved better results in use, reducing many drawbacks and problems that occur during human operation, and reducing equipment failures during operation. This not only improves the performance of the equipment, but also extends its service life, improving the safety of the equipment in use, especially for equipment designed and manufactured by professional manufacturers, Having good after-sales service guarantee.
High speed shearing machine
With the continuous urbanization process in China, land resources are becoming increasingly scarce, and the problem of water pollution is also intensifying. In order to protect the environment and make people's living environment more beautiful, the country is constantly increasing the standardization of water plant infrastructure and operating costs, and wants to manage sewage problems through various skills. Just like the magnetic flocculation process we will talk about below, it has great advantages in sewage treatment. Let's take a look together.
1. The magnetic flocculation process can shorten the total residence time of sewage in the sewage treatment tank to less than 30 minutes, and the coagulation sedimentation tank that uses this process to treat sewage occupies a relatively small area, which is very space saving. The sewage treatment effect is also very good, and it is currently a popular process in the field of municipal wastewater phosphorus removal.
2. It is possible to build coagulation and flocculation reaction tanks together with sedimentation tanks, and the sedimentation retention time will be further shortened. The equipment area is only about 50% of that of ordinary coagulation tanks, and the one-time investment cost of using magnetic flocculation technology to treat wastewater has also been reduced.
Magnetic coagulation precipitation
The following is a brief introduction to the characteristics of electromagnetic flocculation sewage treatment equipment, hoping to be helpful to everyone.
1. Short processing time, fast speed, and large processing capacity. A magnetic force with a specific gravity of 640 times greater is immediately generated in the disk. High processing efficiency, short process, and short total processing time. Multiple units are feasible to operate and meet the requirements of high flow processing.
2. Small footprint and stable effluent. The floor area is approximately 1/8 of the traditional flocculation sedimentation area, with a flocculation time of 1 minute and 2 minutes, and an average flow rate of 320 meters/hour.
3. High sludge concentration. The disk directly and strongly adsorbs sludge, continuously discharging the equipment. High concentration sludge is obtained through a slag removal system.
4. Adopting magnetic coagulation technology, it has low operating costs, low usage, high magnetic recovery and utilization rate, and low operating costs.
5. Convenient daily maintenance, no need for equipment backwashing, high degree of automation, and stable and reliable operation.
Magnetic flocculation equipment
Do you have any understanding of magnetic flocculation equipment? Here is an introduction to the characteristics of magnetic flocculation equipment, hoping to be helpful to you.
1. Short processing time, fast speed, and high processing power. The disk immediately generates a magnetic force 640 times larger than the disk, resulting in high processing efficiency, short processing time, and total processing time. Multiple units can run in parallel to meet the requirements of high flow processing.
2. Small footprint, stable effluent, covering an area of 1 ≤ 8 for traditional flocculation sedimentation, with a setting time of 1 minute, a flocculation time of 2 minutes, and an average flow rate of 320 m/h.
3. The sludge concentration is high, and the disc directly strongly adsorbs the sludge, continuously releasing the equipment, and obtaining high concentration sludge through the slag removal system.
4. Adopting magnetic flocculation technology, the operating cost is low, the dosage is small, the magnetic circulation utilization rate is high, and the operating cost is low.
The magnetic flocculation equipment is easy to maintain daily, without equipment backwashing, with a high degree of automation and stable and reliable operation.
Magnetic flocculation
Black and foul smelling water bodies are a serious water pollution phenomenon, which completely deprives the water of its function and affects the landscape and human health. Therefore, the treatment of black and odorous water bodies is urgent. The following is a brief introduction to the application of magnetic flocculation equipment in the treatment of black and odorous water.
Magnetic flocculation equipment achieves rapid water purification by endowing non magnetic water pollutants with magnetism and solid-liquid separation through disk adsorption and salvage. This technology has the characteristics of high-efficiency magnetic flocculation, high separation efficiency, small footprint, good effluent quality, low operating cost, and high degree of automation. It has been widely used in water environment of river basins, municipal water environment, steel water environment, coal water environment, green industry and other fields, with ideal results, especially in removing suspended solids and total phosphorus.
Protecting urban water environment increasingly relies on excellent technology and products. By building a win-win cooperation system, we always adhere to the customer-centric research and development philosophy, continuously enhancing our product equipment system and technological innovation capabilities. At the same time, in line with the trend of accelerating the vigorous development of the national environmental protection manufacturing industry, we promote product innovation, closely follow market demand and customer demand, continuously improve the technology innovation and application system, sort out and form a technology research and development system divided by technology platform product line product, establish a technology platform based on magnetic flocculation separation, fully utilize technology and services, and achieve the unity of economic and environmental benefits.
Magnetic coagulation
The magnetic flocculation process can achieve rapid and efficient flocculation, sedimentation, and clarification by removing insoluble substances from the water through magnetic flocs. In the overall bidding depth project, "magnetic flocculation" can be treated using other technical means. For example, for projects with high requirements for COD, BOD, ammonia nitrogen, total nitrogen, and chromaticity, mature processes such as MBBR, Fenton, activated carbon, and aerated biofilter can be used to achieve work indicators together, greatly reducing the workload of other process stages, extending service life, and improving usage efficiency. Therefore, the application prospects and prospects of magnetic flocculation are very broad.
Integrated magnetic coagulation equipment
1. High sedimentation efficiency.
The advantage of magnetic coagulation is its high sedimentation efficiency. Due to the use of magnetic materials, compared to conventional flocculation and sedimentation processes, the sedimentation efficiency is faster and more effective.
2. Low operating costs.
Low operating costs are the characteristic of magnetic coagulation. Although magnetic powder is used for efficient magnetic agglomeration precipitation, it can be recycled and reused. Thus achieving comprehensive cost control and effectively controlling equipment operating costs. Make it a universal process for various sewage sedimentation treatments.
The results indicate that magnetic concrete is superior to conventional concrete in terms of settlement speed and settlement effect. From the perspective of coagulation sedimentation rate, the conventional coagulation method requires manual processing, which is time-consuming and expensive. Magnetic coagulation technology can effectively reduce labor intensity, control dosage, and improve cost-effectiveness. The results show that the surface tension and flocculent size of magnetic mixed precipitation are better than those of conventional precipitation.
In addition, magnetic mixed flow has the advantages of small construction area, low new investment and operating costs, stable and reliable treatment effect, and is particularly suitable for the pre-treatment of coagulation and sedimentation in sewage plants. Magnetic coagulation is an ideal method to replace traditional coagulation therapy.
High shear machine
Because different environmental protection devices have their own application advantages and characteristics, with the continuous development and application of modern new technologies, they can effectively solve the practical production application problems of enterprise users. Through the production and manufacturing of new high-speed shear machines, the performance of such devices has been significantly improved, effectively solving the environmental protection problems of enterprise users in production. However, when understanding and selecting equipment, It is necessary to make rational judgments and choices based on practical applications.
High speed flocculation machine
The current development and design of new intelligent environmental protection equipment cannot be separated from the key mastery and application of technology. Among the current professional equipment manufacturers, the development and manufacturing of new models of high-speed shear machines have effectively met the selection and application requirements of different enterprises, effectively expanding the scope of use of the equipment and providing more favorable basic guarantees for the production and processing of many enterprises, This reflects the environmental protection and energy-saving application effect of the new equipment.
High speed shear flocculation machine
With the continuous development and enhancement of modern economy, many fields in production and manufacturing not only have higher standards and requirements for product quality, but also attach great importance to environmental protection production. Therefore, the selection and use of high-speed shear machines has become a crucial prerequisite for many enterprise users. After continuous design and improvement, this equipment can play a good application effect in practical use, Thus achieving the ultimate goal of environmentally friendly production.
Application advantages of automation equipment
Because when selecting different environmental protection equipment and facilities, it is necessary to understand the application performance and scope of the equipment. Nowadays, through continuous improvement and design by professional manufacturers, new models of high-speed shear equipment have good automation application advantages. Through the matching of intelligent control application systems, the equipment not only saves energy consumption during operation, but also enhances the efficiency of the equipment in use, And ensure that the equipment has good safety during operation.
Because in the design and improvement process of high-speed shear machines, it is necessary to consider the practicality of the equipment. When understanding similar equipment in the past, many problems in the use of the equipment can be identified, so that the new equipment can be better combined with reality and effectively improved, making it safer and more reliable in use, and the installation and use of intelligent equipment, It can also effectively save the cost of enterprise operation.
Deflocculation machine
In many current production enterprises, only by providing more basic guarantees can we improve the production and processing efficiency in reality. Due to the gradual enhancement of environmental awareness and the production and manufacturing of many enterprises, many different pollutants are generated. Only by properly treating pollutants can we meet the actual requirements of environmental protection production. Through understanding high-speed shear machines, You can see many good performance of the device in use.
Supermagnetic separator
Magnetic separation technology is a physical separation method that uses the force of a magnetic field to separate substances with different magnetic properties. Magnetic separation technology can be said to be a relatively ancient and mature technology, applied to mineral processing and porcelain clay industry. In 1845, the United States published industrial magnetic separators. Magnetic separation technology, as a separation method for two or more substances with magnetic differences, has been widely applied in fields such as ore selection, coal desulfurization, iron removal of raw materials such as glass and cement, purification of kaolin, cell separation in bioengineering, and catalyst recovery in the petrochemical industry.
Magnetic separation technology is an emerging technology used in water treatment engineering. Starting from the 1960s, the Soviet Union used magnetic coagulation to treat steel mill dust removal wastewater. In the late 1960s, American MIT professor Kohm invented a high gradient magnetic filter. In the 1970s, the United States applied magnetic flocculation and high gradient magnetic separation methods to treat wastewater from steel, food, chemical, papermaking, and other industries. In 1974, Sweden began using the disk method to treat steel rolling wastewater, and in the following 75 years, Japan developed a disk type "two second separator". From the mid-1970s to the early 1980s, China used magnetic agglomeration, magnetic disk, and high gradient magnetic separation methods for the treatment of steel making and rolling wastewater.
In recent years, magnetic separation technology has achieved certain research results in the treatment of electroplating wastewater, phenolic wastewater, lake water, food fermentation wastewater, municipal wastewater, steel wastewater, kitchen wastewater, slaughterhouse wastewater, petroleum produced water, etc. Some have been well applied in actual wastewater treatment.
Magnetic separator
The super magnetic separation water purification technology is a new technology used in the field of sewage treatment to replace traditional coagulation sedimentation, sand sedimentation, and inclined plate sedimentation for the removal of suspended solids.
It is different from traditional processes that rely on gravity separation of suspended solids, and uses rare earth permanent magnet technology to change passive precipitation into active adsorption and salvage, improving the efficiency of separation. The moisture content of the sludge separated by the super magnetic separation technology is less than 93%. The hydraulic retention time of the process is less than 5 minutes, resulting in a small footprint. The complete equipment for handling 10000 cubic meters of water per day has an installed power of only over 40 kilowatts.
The super magnetic separation water purification technology is mainly used for the treatment of wastewater from continuous casting and rolling in the metallurgical industry; Underground water treatment in the coal industry; Control of non-point source pollution in the "Milk Creek" of the slate industry; The landscape of rivers and lakes, emergency treatment of rivers and lakes in the river management industry, and underground reinjection water treatment in the petroleum industry.
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1、Magnetic coagulation coagulation (high-efficiency sedimentation) sedimentation technology is the synchronous addition of magnetic particles with a specific gravity of 4.8-5.1 in traditional coagulation sedimentation processes, which are combined with pollutant flocculation to enhance the coagulation and purple coagulation effects, resulting in a higher density and stronger purple body, thus achieving the goal of high-speed sedimentation. The settling speed of magnetic flocs can reach over 40m/h. Magnetic particles are recycled and reused through high shear machines and magnetic separators.
The residence time of the entire process is very short, so the probability of reverse dissolution process occurring for most pollutants, including TP, is very low. In addition, the magnetic powder and flocculant added in the system have good adsorption effects on bacteria, viruses, oil, and various small particles. Therefore, the removal effect of these pollutants is better than traditional processes, especially for phosphorus and SS removal. Meanwhile, due to its high-speed sedimentation performance, it has many advantages compared to traditional processes, such as fast speed, high efficiency, small footprint, and low investment. The magnetic mixed flocculation (high-efficiency sedimentation) sedimentation technology is a revolutionary new technology.
The magnetic mixed flocculation (high-efficiency sedimentation) sedimentation technology originated in the United States. Previously, the practical application of magnetic mixed flocculation (high-efficiency sedimentation) sedimentation technology in water treatment engineering was very limited, because the problem of magnetic particle recovery has not been well solved. Now this technical challenge has been successfully solved, and the magnetic particle recovery rate can reach over 99%. This fully reflects the technical and economic advantages of the magnetic coagulation (high-efficiency precipitation) precipitation process, which has been increasingly widely applied at home and abroad. At present, China has gradually implemented the engineering application of this technology in urban sewage treatment, reclaimed water reuse, river black and foul water treatment, high phosphorus wastewater treatment, papermaking wastewater treatment, oilfield wastewater, and mine wastewater treatment, and has achieved good results.
2、Basic Principles of Magnetic Mixing Flocculation (Efficient Precipitation) for Water Purification
Magnetic coagulation and sedimentation technology is the simultaneous addition of magnetic particles in the coagulation and sedimentation process, which integrates them with pollutant flocculation to enhance the coagulation and flocculation effects, making the generated flocs denser and stronger, thus achieving the goal of high-speed sedimentation. Magnetic particles can be recycled and reused through magnetic drums.
The residence time of the entire process is very short, so the probability of reverse dissolution process occurring for most pollutants, including TP, is very low. In addition, the magnetic powder and flocculant added in the system have good adsorption effect on bacteria, viruses, oil, and various small particles, so the removal effect of these pollutants is better than traditional processes. Meanwhile, due to its high-speed sedimentation performance, it has many advantages compared to traditional processes, such as fast speed, high efficiency, small footprint, and low investment.
Principle 1. Use magnetic adsorption to remove ferromagnetic suspended solids from metallurgical, mine or mining wastewater, and purify water bodies.
Principle 2: By using water treatment agents, non magnetic suspended solids in wastewater are coagulated with added magnetic particle flocs to form magnetic flocs. Magnetic adsorption is used to remove the magnetic flocs and purify the water body; Magnetic powder is separated from water pollutants and recycled for use.
The Role of Magnetic Particles
① Assisting sedimentation: Magnetic mixing flocculation (high-efficiency sedimentation) technology adds magnetic powder to conventional flocculation sedimentation, with a specific gravity of 4.8-5.1. The magnetic powder can combine with the floc, thereby increasing the specific gravity of the floc and greatly increasing the sedimentation rate.
② Adsorption: The surface of the magnetic powder is irregular and has a certain physical adsorption effect. In addition, the surface charge adsorption can also play a partial role.
③ Catalysis: Due to the micro magnetic field on the surface of the micro magnetic powder, it can play a certain catalytic role in the removal of organic phosphorus.
④ Recyclable: The main component of magnetic powder is Fe3O4, arranged in an disordered manner. The magnetic powder itself does not have magnetism, but can conduct magnetism and be recovered through magnetic force. In addition, other chemical properties are stable and will not dissolve or undergo other reactions in water.
Equipment characteristics
1. The settling speed is fast, reaching a high settling speed of 40m/h;
2. High surface load, up to 20m ³/ ㎡ h~40m ³/ ㎡ h;
3. Short retention time, from inlet to outlet, can be as low as 20 minutes (in some cases, the retention time can be shorter);
4. Effectively reduce the floor area of the sedimentation tank, which can be as low as 1/20 of the conventional process;
5. Efficient phosphorus removal, with optimal effluent TP as low as 0.05mg/L;
6. The effluent has high transparency and turbidity<1 NTU;
7. High SS removal rate, optimal effluent<2mg/L;
8. Magnetic powder recycling, with a recovery rate of over 99% and low operating costs;
9. Effectively optimize the dosage of chemicals, reduce operating costs, and in the best case, save 15% of the dosage;
10. The system is compact (can also be made into a mobile processing device), which can achieve automatic control and is easy to operate.
3、 Advantages of magnetic coagulation sedimentation technology
(1) Small footprint: The system has a high degree of integration, and the investment of magnetic loading materials leads to a fast settling speed of the flocs, thereby reducing the device volume and overall footprint, which is more than 15 times smaller than the conventional process footprint; The area of a single set of 30000 m3/d scale loading coagulation magnetic separation system is about 300m2.
(2) Mobility: With high integration, the device can be made into on-board or shipborne mobile devices, making it very suitable for water treatment in various fields such as emergency events, rural domestic sewage, and drinking water.
(3) Quick effect: fast settling speed, short residence time, fast start-up time, less than 20 minutes of inlet and outlet water in the entire system, and good treatment effect. It can efficiently remove various pollutants, and its effluent quality can be comparable to that of ultrafiltration membrane effluent, especially for total phosphorus (TP) in water bodies, which can reach<0.2mg/L.
(4) Low investment: The system is simple, covers a small area, mobile equipment does not require land approval, has a short construction cycle, and can be retrofitted on top of the existing equipment, greatly reducing investment costs.
(5) Low operating cost: The system has low energy consumption, simple equipment maintenance, and advanced magnetic separation and recovery device allows for complete recovery of magnetic substances. The efficient sludge reflux system reduces the dosage of reagents, which can effectively reduce operating costs.
In addition, compared to other processes, magnetic separation technology has the following advantages:
(1) This process can effectively treat primary, secondary, and tertiary urban wastewater, as well as reclaimed water, various industrial wastewater, and drinking water.
(2) The surface load can reach 20m3/m2h to 40m3/m2h.
(3) Sludge is highly compressed and has a high concentration
(4) The service life of the equipment is long, and in addition to normal maintenance, there is no need to replace components, resulting in high secondary investment (membrane process operation and maintenance costs are estimated to be more than 1.3 times the cost of loading the coagulation magnetic separation system).
(5) It has strong impact resistance to water quality and quantity, and the peak flow rate in a short period of time can reach 1.5 times the average flow rate. When there is a significant fluctuation in the inlet water quality or other harmful metal ions enter the magnetic separation system, the system can still maintain a high removal efficiency and significantly remove pollutants from the water.
(6) If the total phosphorus index continues to improve in the future, there is no need to increase investment in the construction of new facilities. Simply use the existing loading coagulation magnetic separation system and increase the dosage of flocculant during operation to meet the requirements, even reaching the US standard TP ≤ 0.2ppm.
4、 Magnetic powder recycling equipment
a. Magnetic seed loading: Different levels of magnetic seeds are used for different water bodies, with magnetic seeds as carriers. Under the action of coagulants and coagulants, the suspended solids in the water body are made to have micro magnetism.
b. Reagent dosing: coagulants and coagulants aids commonly used in water treatment, such as Aluminium chlorohydrate (PAC), Aluminium chlorohydrate iron (PAFC), polymeric Iron(III) sulfate, polyacrylamide (PAM), etc.
c. Magnetic seed recycling: The dispersion, demagnetization, and separation of magnetic sludge flocs are achieved through a magnetic seed recycling system, and the recovered magnetic seeds are recycled for use.
5、 Application field
● Industrial wastewater treatment: mine water in the coal industry, graphite containing steel rolling wastewater in the metallurgical industry and general drainage from the steel plant, common water treatment at oil recovery and reinjection points in the oil industry, and pretreatment and fine treatment of paper making wastewater;
● Sewage treatment: primary enhanced treatment of sewage, upgrading and renovation of sewage treatment plants, deep dephosphorization treatment of concentrated wastewater from sewage treatment plants, and membrane pre-treatment of reclaimed water reuse;
● Public water purification: turbidity reduction, algae removal, and phosphorus removal of river water, landscape water, and lake water
● Water supply pre-treatment: pre-treatment of domestic and industrial water sources
Emergency response: emergency response to water pollution accidents
6、 Composition of magnetic flocculation equipment:
The water to be treated in the rapid coagulation zone is distributed by the water distribution system and reaches the rapid stirring coagulation zone. Iron salt or aluminum iron are added as coagulants near the blades of the mixer. Quickly and evenly disperse the coagulant into the water, which is conducive to the hydrolysis of the coagulant and fully utilizes the high charge of the coagulant to neutralize and destabilize the colloid in the water, causing small particles to gather together.
Add an appropriate amount of magnetic powder into the magnetic powder loading area. The small particles serve as crystal nuclei, making it easier to form alum, greatly increasing the proportion of alum. At the same time, under the mutual attraction between magnetic particles, large particles and high-density flocs are quickly formed, accelerating the sedimentation rate.
The sludge returning from the bottom of the sedimentation zone is pumped to the magnetic particle loading zone. The purpose of adding circulating sludge is to contact the Suspended solids of the raw sewage with the sludge in the system to increase the formation of flocs, and also to recycle the magnetic particles in the system.
The sewage in the flocculation area flows from the magnetic particle loading area to the flocculation area. In order to further form larger and denser flocs of solid suspended solids, it is necessary to add polymer flocculants in the flocculation zone. Flocculants have an adsorption bridging effect, causing small particles to gradually form larger flocs, facilitating solid-liquid separation, and effectively removing suspended substances and colloids in water.
The sewage from the sedimentation zone flows into the sedimentation zone after passing through the flocculation zone. The sedimentation zone utilizes the principle of shallow sedimentation and adopts inclined pipes, which significantly increases the surface hydraulic load of the sedimentation zone.
The flow direction of sewage in the sedimentation zone is upward, with particles settling and settling at the bottom of the tank. The mud scraper driven by the center scrapes the sludge from the bottom of the tank towards the bottom and falls into the mud hopper. The sludge pumped out from the sludge hopper and sent to the magnetic particle loading area by the sludge circulating pump is called circulating sludge. The remaining sludge is pumped to a magnetic separator for magnetic particle recycling and reuse, and then sent to the sludge treatment process.
The magnetic mud shear machine further optimizes the design of the quick shear zone, and the dual shear knives set inside the cylinder generate high-speed collisions to form a true high-speed shear effect, thereby dispersing the magnetic powder or sludge.
Function of magnetic particle separation equipment: suitable for recovering specific particle size, grade, and quality magnetic particles from a certain concentration of sludge slurry.
7、 Design principles of magnetic flocculation equipment
In order to manage river pollution as economically and economically as possible, in accordance with technical and economic feasibility, and to achieve certain governance goals, the following design principles are reflected:
1. In engineering design, the current norms and standards of both myself and the local government will be strictly implemented.
2. Adopting a process that prioritizes technology, reliable operation, and simple operation and management, organically combines efficiency and reliability.
3. Adapt to local conditions, fully consider the rationality of the selected process, and effectively control the process cost.
4. Utilize energy-saving governance processes to save energy and minimize operating costs.
5. The system equipment is simple, the construction cycle is short, the effectiveness is fast, and maintenance is convenient. Under the premise of effective governance, the goal of "three low" (low investment, low operating costs, and low technical management requirements) is achieved.
Important auxiliary equipment: high shear machine
Technical features:
A adopts a variable frequency motor with adjustable speed;
B adopts imported mechanical seals for better wear resistance and longer service life;
The C overcurrent components and shear mechanism are made of non-metallic materials to ensure long-term operation of the high shear function:
D revolutionary uses non-metallic inner villages and non-metallic shear plates, with high wear resistance.
Product parameters |
product name FL series magnetic separator |
Water treatment capacity 1000~20000m3/d |
Installed power 12~20KW |
cover an area 15~90m2 |
Applicable scenarios Municipal sewage upgrading and renovation, black and odorous water treatment |
Technical parameters: |
Magnetic roller size | Maximum sludge flow rate | speed | power |
Ф400×600 | 8m3/h | 5~17r/min | 380V 1.5KW |
Ф400×1000 | 14m3/h | 5~25r/min | 380V 2.2KW |
Ф600×600 | 12m3/h | 5~17r/min | 380V 2.2KW |
Ф600×1000 | 20m3/h | 5~25r/min | 380V 2.2KW |
Ф900×1000 | 30m3/h | 5~25r/min | 380V 3KW |
Integrated magnetic coagulation process equipment selection: |
model | processing capacity（m3/d) | Overall dimensions （L×W×H)m | Number of main units | total power （KW) | Operating weight (T) | Inlet and outlet water indicators |
FLYC-25 | 25 | 3×1.5×3 | 1 | 9 | 20 | The inflow is conventional domestic sewage; The effluent meets the first level A or B standards of GB1818918-2002 "Pollutant Discharge Standards for Urban Sewage Treatment Plants". |
FLYC-50 | 50 | 3.5×1.5×3 | 1 | 9 | 22 |
FLYC-100 | 100 | 4×2×3 | 1 | 11 | 30 |
FLYC-150 | 150 | 4.5×2×3 | 1 | 11 | 33 |
FLYC-200 | 200 | 5×2.5×3 | 1 | 11 | 35 |
FLYC-250 | 250 | 5.5×2.5×3 | 1 | 13 | 40 |
FLYC-300 | 300 | 6×2.5×3 | 1 | 13 | 45 |
Configuration list of magnetic coagulation equipment:
Device Name | Specification and model | number | unit |
FLMag Installation body | FLZYM-2000TPD
Q235B anticorrosive L×B×H=12000×3000×3000 | 2 | cover |
PAC Coagulation reaction tank | FLMag-PAC | 2 |
Supporting mixing system | FLJB-MX-1100 Submerged SS304 | 2 |
Supporting reducer | N=2.2KW 380V/50HZ | 2 |
Magnetic particle loading reaction tank | FLMag-CZ | 2 |
Supporting mixing system | FLJB-MX-1100 Submerged SS304 | 2 |
Supporting reducer | N=2.2KW 380V/50HZ | 2 |
PAM Flocculation reaction tank | FLMag-PAM | 2 |
Supporting mixing system | FLJB-MK-1700 Submerged SS304 | 2 |
Supporting reducer | N=2.2KW 380V/50HZ | 2 |
Magnetic separation equipment | FLMag-500 | 2 |
Supporting reducer | N=0.75KW 380V/50HZ | 2 |
shears | FLGJ-M-500 N=0.55KW | 2 |
Reciprocating mud scraper | FLGN-W-2800 Submerged SS304 | 2 |
Supporting hydraulic station | FAT-8T N=1.5KW | 2 |
Magnetic mixed sludge pump | 1.5/1B-AH rubber
Q=7m3/h H=6m N=2.2KW | 2 |
Inlet flow meter | KFCX-DN150 | 2 |
Sludge reflux flow meter | KFCX-DN50 | 2 |
Sludge recovery flow meter | KFCX-DN40 | 2 |
Automatic sludge reflux valve | DN50 SS304 | 2 |
Automatic sludge recovery valve | DN40 SS304 | 2 |
PAC Dosing device | FLJY series | 2 |
PAC Metering pump | VAMd07063
Q=63L/H P=0.7MPa | 2 |
PAC Preparation unit | FLPAC-1000L barrel PE
FLJB-0.2 0.75KW Plastic lining | 2 |
PAM Dosing device | FLPAM series | 2 |
PAM Metering pump | VAMd04120
Q=120L/H P=0.4MPa | 2 |
PAM Preparation unit | FLJY-200L barrelbarrel PE
FLJB-0.2 0.35KW Plastic lining | 2 |
Intelligent cloud control system | FLZK series | 1 |
PLC Cloud Control | S7 series | 1 |
Power control system | FLZK-D series | 1 |
Supporting frequency converter | Model: matching | 2 |
Supporting cables | Model: matching | 1 | lots |
Magnetic coagulation
The process principle of magnetic coagulation
1. The process principle of magnetic coagulation technology is to add magnetic seeds in the traditional flocculation mixed sedimentation process to enhance the flocculation effect, form high-density flocs, and increase the specific gravity of flocs, achieving the goal of efficient pollution removal and rapid sedimentation.
Magnetized coagulation permanent magnet rotary disc purification equipment
2. According to the ion polarity and metal characteristics of the magnetic seed, as the core of the floc, it greatly strengthens the flocculating ability of suspended pollutants in the water, reduces the amount of flocculant, and has better effect than the traditional process in removing suspended solids, especially in removing phosphorus, bacteria, viruses, oil, heavy metals, etc.
3. Due to the high specific gravity of magnetic seeds up to 5. O × 103kg/m3, with an increase in the specific gravity of the floc mixed with magnetic seeds, can quickly settle the floc. The entire water treatment process can be completed in about 15 minutes from inlet to clear liquid outlet. The magnetic seeds in the sludge are separated using rare earth permanent magnet drums based on their own characteristics and recycled in the system. To achieve the goal of highly purified effluent and reducing wastewater treatment costs.
Magnetic coagulation equipment
Magnetic coagulation and sedimentation technology is the synchronous addition of magnetic particles with a specific gravity of 4.8-5.1 in traditional coagulation and sedimentation processes, which are combined with pollutant flocculation to enhance the coagulation and flocculation effects, making the generated flocs denser and stronger, and achieving high-speed sedimentation. The settling speed of magnetic flocs can reach over 40 m/h. The magnetic powder is recycled and reused through a high shear machine and a magnetic seed catcher (magnetic separator).
The residence time of the entire process is very short, so the probability of reverse dissolution process occurring for most pollutants, including TP, is very low. In addition, the magnetic powder and flocculant added in the system have good adsorption effects on bacteria, viruses, oil, and various small particles. Therefore, the removal effect of these pollutants is better than traditional processes, especially the phosphorus removal effect is particularly significant. Meanwhile, due to its high-speed sedimentation performance, it has many advantages compared to traditional processes, such as fast speed, high efficiency, small footprint, and low investment. Magnetic coagulation precipitation technology is a revolutionary new technology.
Magnetic coagulation precipitation
The following is a brief introduction to the characteristics of electromagnetic flocculation sewage treatment equipment, hoping to be helpful to everyone.
1. Short processing time, fast speed, and large processing capacity. A magnetic force with a specific gravity of 640 times greater is immediately generated in the disk. High processing efficiency, short process, and short total processing time. Multiple units are feasible to operate and meet the requirements of high flow processing.
2. Small footprint and stable effluent. The floor area is approximately 1/8 of the traditional flocculation sedimentation area, with a flocculation time of 1 minute and 2 minutes, and an average flow rate of 320 meters/hour.
3. High sludge concentration. The disk directly and strongly adsorbs sludge, continuously discharging the equipment. High concentration sludge is obtained through a slag removal system.
4. Adopting magnetic coagulation technology, it has low operating costs, low usage, high magnetic recovery and utilization rate, and low operating costs.
5. Convenient daily maintenance, no need for equipment backwashing, high degree of automation, and stable and reliable operation.
Magnetic coagulation equipment
The so-called magnetic coagulation and sedimentation technology is the synchronous addition of magnetic particles in ordinary coagulation and sedimentation processes, making them integrated with pollutant flocculation to strengthen the coagulation and flocculation effects, making the generated flocs denser and stronger, and thus achieving the goal of high-speed sedimentation. Magnetic particles can be recycled and reused through magnetic drums. The residence time of the entire process is very short, so the probability of reverse dissolution process occurring for most pollutants, including TP, is very low. In addition, the magnetic powder and flocculant added in the system have good adsorption effect on bacteria, viruses, oil, and various small particles, so the removal effect of these pollutants is better than traditional processes. Meanwhile, due to its high-speed sedimentation performance, it has many advantages compared to traditional processes, such as fast speed, high efficiency, small footprint, and low investment.
Strong magnetic separator
Magnetic coagulation equipment is a water treatment technology that super removes TP, SS, COD, and heavy metals. It is suitable for municipal sewage upgrading and renovation, black and odorous river regulation, deep phosphorus removal, turbidity removal, suspended solids removal, and other fields of industrial wastewater.
The technology is based on traditional flocculation and sedimentation technology, adding high density recyclable magnetic powder as a carrier to improve the settling speed of the floc in the clarification tank, and the treatment efficiency can reach more than 20 times that of traditional technology. At the same time, improve the treatment effect of pollutants through its own catalysis and adsorption; It has the advantages of fast settling speed, high surface compliance, small footprint, good treatment effect, and portability.
Mainly including magnetic flocculation reaction process, high-speed settling solid-liquid separation process, and magnetic particle recovery process. The magnetic flocculation reaction process mainly combines the flocs formed by pollutants with magnetic particles to form large and dense magnetic flocs. The high-speed sedimentation solid-liquid separation process relies on the specific gravity of the magnetic flocs themselves to form a sedimentation rate of over 40m/h in the sedimentation tank, thereby quickly separating pollutants from the water body. The magnetic powder recycling process mainly involves separating the magnetic powder and residual sludge through a high shear machine and entering the magnetic separator, which then recycles the magnetic powder into the loading reaction tank for recycling.
Technical parameters of magnetic coagulation equipment
Specification and model | Processing capacity: m3/h | Motor power: kW | Overall dimensions (length × wide × Height) m |
FLCFH--10 | 10 | 1.1 | 1600×1000×1800 |
FLCFH--20 | 20 | 1.1 | 1600×1300×1800 |
FLCFH--30 | 30 | 2.2 | 1600×1600×1800 |
FLCFH--40 | 40 | 3 | 1600×1900×1800 |
FLCFH--56 | 56 | 4 | 1600×2200×1800 |
FLCFH--65 | 65 | 4 | 1600×2600×1800 |
Magnetic flocculation equipment
Do you have any understanding of magnetic flocculation equipment? Here is an introduction to the characteristics of magnetic flocculation equipment, hoping to be helpful to you.
1. Short processing time, fast speed, and high processing power. The disk immediately generates a magnetic force 640 times larger than the disk, resulting in high processing efficiency, short processing time, and total processing time. Multiple units can run in parallel to meet the requirements of high flow processing.
2. Small footprint, stable effluent, covering an area of 1 ≤ 8 for traditional flocculation sedimentation, with a setting time of 1 minute, a flocculation time of 2 minutes, and an average flow rate of 320 m/h.
3. The sludge concentration is high, and the disc directly strongly adsorbs the sludge, continuously releasing the equipment, and obtaining high concentration sludge through the slag removal system.
4. Adopting magnetic flocculation technology, the operating cost is low, the dosage is small, the magnetic circulation utilization rate is high, and the operating cost is low.
The magnetic flocculation equipment is easy to maintain daily, without equipment backwashing, with a high degree of automation and stable and reliable operation.
Efficient magnetic separator
Magnetic separation technology is based on the traditional flocculation and sedimentation process, which increases the addition of magnetic powder and mixes and co settles the magnetic powder and floc through the magnetic particle loading reaction tank. The magnetic powder is recycled and reused through equipment such as high shear machines and magnetic separators.
Magnetic separation technology can remove settleable particles and other water pollutants. Its system is reliable, simple, and compact, making it a highly effective and low-cost process for treating rivers, lakes, and landscape water. Magnetic separation technology increases the specific gravity of the flocs by adding magnetic particles to the water, effectively increasing the settling speed, increasing the surface load of the settling tank, shortening the effective residence time, reducing the floor area of the entire treatment process, and also saving construction costs. Its effluent effect is good, with good removal effects for SS, TP, COD, BOD, etc. The sewage treatment system developed with this technology has made achievements in river and lake water body treatment fields such as river blackness and odor treatment, river Eutrophication treatment, river water quality maintenance, lake water quality improvement, landscape water body maintenance, and has made outstanding contributions to China's water environment treatment.
Magnetic flocculation equipment
Currently, the removal rate of CODCr by traditional coagulation precipitation is only about 10%. It's still rare. But now, after using magnetic flocculation and magnetic separation technology for treatment, the CODCr removal effect has significantly increased, as it can reach around 30%.
For example, the treatment of supplementary water for cooling circulation in power plants usually adopts the flocculation sedimentation process, but its floc settling property is very poor. Therefore, we use a mechanical stirring clarification tank, which occupies a large area and incurs relatively high civil construction costs. So it is very suitable for retrofitting existing water treatment systems in power plants.
Magnetic flocculation precipitation
Magnetic flocculation and magnetic separation process, which is based on traditional flocculation sedimentation process, also includes magnetic particle loading reaction tank, high shear device, magnetic separator, and other equipment. Now, in addition to improving settling speed, magnetic flocculation technology also provides high-quality effluent and reduces floor area. After removing both of these factors, the most important thing is that it can also optimize and reduce the original dosage by 50%. Moreover, it can also remove suspended solids while adding appropriate medication, making it more advantageous for the removal of total phosphorus. And the wastewater treatment plant in Co ncord, Massachusetts, USA has been using magnetic flocculation and magnetic separation processes as advanced treatment systems since 2007, because its effluent stability reaches SS<5 mg/L, total phosphorus<0.2 mg/L, and the magnetic particle recovery rate can also reach as high as 99.5%.
Magnetic coagulation precipitation
Magnetic flocculation is generally mainly used in the fields of water supply and sewage treatment, and is based on its chemical composition. Magnetic flocculation can be divided into inorganic flocculants and organic flocculants. Among them, inorganic flocculants include inorganic flocculants and inorganic polymer flocculants, while organic flocculants include synthetic organic polymer flocculants, natural organic polymer flocculants, and microbial flocculants.
Magnetic flocculation
Magnetic coagulation high-efficiency sedimentation system
The magnetic coagulation system adds flocculants, magnetic seeds, and coagulants to the mixing reaction tank for magnetic coagulation reaction; Enter the clarification tank for efficient solid-liquid separation; The sludge containing high concentration magnetic particles in the clarification tank is lifted to the high shear machine and magnetic separator through a magnetic mud crushing pump to separate the magnetic particles from the sludge, and the magnetic particles are returned to the mixed reaction tank to continue participating in the reaction. The remaining sludge after separation is discharged into the sludge tank for the next step of sludge concentration and dehydration treatment.
Shear machine
At present, the development and gradual application of new technologies have played a good role in many production applications, including the selection and use of basic raw materials, which have played a very good role in the design and manufacturing of various new equipment. Nowadays, the use of equipment has achieved intelligent control mode. Therefore, in the production and manufacturing of high-speed shear machines, corresponding equipment software will also be matched, This can better control and use the equipment.
Good practicality characteristics
Through the design of intelligent application control systems, the high-speed shear machine has achieved better results in use, reducing many drawbacks and problems that occur during human operation, and reducing equipment failures during operation. This not only improves the performance of the equipment, but also extends its service life, improving the safety of the equipment in use, especially for equipment designed and manufactured by professional manufacturers, Having good after-sales service guarantee.
High speed shearing machine
With the continuous urbanization process in China, land resources are becoming increasingly scarce, and the problem of water pollution is also intensifying. In order to protect the environment and make people's living environment more beautiful, the country is constantly increasing the standardization of water plant infrastructure and operating costs, and wants to manage sewage problems through various skills. Just like the magnetic flocculation process we will talk about below, it has great advantages in sewage treatment. Let's take a look together.
1. The magnetic flocculation process can shorten the total residence time of sewage in the sewage treatment tank to less than 30 minutes, and the coagulation sedimentation tank that uses this process to treat sewage occupies a relatively small area, which is very space saving. The sewage treatment effect is also very good, and it is currently a popular process in the field of municipal wastewater phosphorus removal.
2. It is possible to build coagulation and flocculation reaction tanks together with sedimentation tanks, and the sedimentation retention time will be further shortened. The equipment area is only about 50% of that of ordinary coagulation tanks, and the one-time investment cost of using magnetic flocculation technology to treat wastewater has also been reduced.
Magnetic coagulation precipitation
The following is a brief introduction to the characteristics of electromagnetic flocculation sewage treatment equipment, hoping to be helpful to everyone.
1. Short processing time, fast speed, and large processing capacity. A magnetic force with a specific gravity of 640 times greater is immediately generated in the disk. High processing efficiency, short process, and short total processing time. Multiple units are feasible to operate and meet the requirements of high flow processing.
2. Small footprint and stable effluent. The floor area is approximately 1/8 of the traditional flocculation sedimentation area, with a flocculation time of 1 minute and 2 minutes, and an average flow rate of 320 meters/hour.
3. High sludge concentration. The disk directly and strongly adsorbs sludge, continuously discharging the equipment. High concentration sludge is obtained through a slag removal system.
4. Adopting magnetic coagulation technology, it has low operating costs, low usage, high magnetic recovery and utilization rate, and low operating costs.
5. Convenient daily maintenance, no need for equipment backwashing, high degree of automation, and stable and reliable operation.
Magnetic flocculation equipment
Do you have any understanding of magnetic flocculation equipment? Here is an introduction to the characteristics of magnetic flocculation equipment, hoping to be helpful to you.
1. Short processing time, fast speed, and high processing power. The disk immediately generates a magnetic force 640 times larger than the disk, resulting in high processing efficiency, short processing time, and total processing time. Multiple units can run in parallel to meet the requirements of high flow processing.
2. Small footprint, stable effluent, covering an area of 1 ≤ 8 for traditional flocculation sedimentation, with a setting time of 1 minute, a flocculation time of 2 minutes, and an average flow rate of 320 m/h.
3. The sludge concentration is high, and the disc directly strongly adsorbs the sludge, continuously releasing the equipment, and obtaining high concentration sludge through the slag removal system.
4. Adopting magnetic flocculation technology, the operating cost is low, the dosage is small, the magnetic circulation utilization rate is high, and the operating cost is low.
The magnetic flocculation equipment is easy to maintain daily, without equipment backwashing, with a high degree of automation and stable and reliable operation.
Magnetic flocculation
Black and foul smelling water bodies are a serious water pollution phenomenon, which completely deprives the water of its function and affects the landscape and human health. Therefore, the treatment of black and odorous water bodies is urgent. The following is a brief introduction to the application of magnetic flocculation equipment in the treatment of black and odorous water.
Magnetic flocculation equipment achieves rapid water purification by endowing non magnetic water pollutants with magnetism and solid-liquid separation through disk adsorption and salvage. This technology has the characteristics of high-efficiency magnetic flocculation, high separation efficiency, small footprint, good effluent quality, low operating cost, and high degree of automation. It has been widely used in water environment of river basins, municipal water environment, steel water environment, coal water environment, green industry and other fields, with ideal results, especially in removing suspended solids and total phosphorus.
Protecting urban water environment increasingly relies on excellent technology and products. By building a win-win cooperation system, we always adhere to the customer-centric research and development philosophy, continuously enhancing our product equipment system and technological innovation capabilities. At the same time, in line with the trend of accelerating the vigorous development of the national environmental protection manufacturing industry, we promote product innovation, closely follow market demand and customer demand, continuously improve the technology innovation and application system, sort out and form a technology research and development system divided by technology platform product line product, establish a technology platform based on magnetic flocculation separation, fully utilize technology and services, and achieve the unity of economic and environmental benefits.
Magnetic coagulation
The magnetic flocculation process can achieve rapid and efficient flocculation, sedimentation, and clarification by removing insoluble substances from the water through magnetic flocs. In the overall bidding depth project, "magnetic flocculation" can be treated using other technical means. For example, for projects with high requirements for COD, BOD, ammonia nitrogen, total nitrogen, and chromaticity, mature processes such as MBBR, Fenton, activated carbon, and aerated biofilter can be used to achieve work indicators together, greatly reducing the workload of other process stages, extending service life, and improving usage efficiency. Therefore, the application prospects and prospects of magnetic flocculation are very broad.
Integrated magnetic coagulation equipment
1. High sedimentation efficiency.
The advantage of magnetic coagulation is its high sedimentation efficiency. Due to the use of magnetic materials, compared to conventional flocculation and sedimentation processes, the sedimentation efficiency is faster and more effective.
2. Low operating costs.
Low operating costs are the characteristic of magnetic coagulation. Although magnetic powder is used for efficient magnetic agglomeration precipitation, it can be recycled and reused. Thus achieving comprehensive cost control and effectively controlling equipment operating costs. Make it a universal process for various sewage sedimentation treatments.
The results indicate that magnetic concrete is superior to conventional concrete in terms of settlement speed and settlement effect. From the perspective of coagulation sedimentation rate, the conventional coagulation method requires manual processing, which is time-consuming and expensive. Magnetic coagulation technology can effectively reduce labor intensity, control dosage, and improve cost-effectiveness. The results show that the surface tension and flocculent size of magnetic mixed precipitation are better than those of conventional precipitation.
In addition, magnetic mixed flow has the advantages of small construction area, low new investment and operating costs, stable and reliable treatment effect, and is particularly suitable for the pre-treatment of coagulation and sedimentation in sewage plants. Magnetic coagulation is an ideal method to replace traditional coagulation therapy.
High shear machine
Because different environmental protection devices have their own application advantages and characteristics, with the continuous development and application of modern new technologies, they can effectively solve the practical production application problems of enterprise users. Through the production and manufacturing of new high-speed shear machines, the performance of such devices has been significantly improved, effectively solving the environmental protection problems of enterprise users in production. However, when understanding and selecting equipment, It is necessary to make rational judgments and choices based on practical applications.
High speed flocculation machine
The current development and design of new intelligent environmental protection equipment cannot be separated from the key mastery and application of technology. Among the current professional equipment manufacturers, the development and manufacturing of new models of high-speed shear machines have effectively met the selection and application requirements of different enterprises, effectively expanding the scope of use of the equipment and providing more favorable basic guarantees for the production and processing of many enterprises, This reflects the environmental protection and energy-saving application effect of the new equipment.
High speed shear flocculation machine
With the continuous development and enhancement of modern economy, many fields in production and manufacturing not only have higher standards and requirements for product quality, but also attach great importance to environmental protection production. Therefore, the selection and use of high-speed shear machines has become a crucial prerequisite for many enterprise users. After continuous design and improvement, this equipment can play a good application effect in practical use, Thus achieving the ultimate goal of environmentally friendly production.
Application advantages of automation equipment
Because when selecting different environmental protection equipment and facilities, it is necessary to understand the application performance and scope of the equipment. Nowadays, through continuous improvement and design by professional manufacturers, new models of high-speed shear equipment have good automation application advantages. Through the matching of intelligent control application systems, the equipment not only saves energy consumption during operation, but also enhances the efficiency of the equipment in use, And ensure that the equipment has good safety during operation.
Because in the design and improvement process of high-speed shear machines, it is necessary to consider the practicality of the equipment. When understanding similar equipment in the past, many problems in the use of the equipment can be identified, so that the new equipment can be better combined with reality and effectively improved, making it safer and more reliable in use, and the installation and use of intelligent equipment, It can also effectively save the cost of enterprise operation.
Deflocculation machine
In many current production enterprises, only by providing more basic guarantees can we improve the production and processing efficiency in reality. Due to the gradual enhancement of environmental awareness and the production and manufacturing of many enterprises, many different pollutants are generated. Only by properly treating pollutants can we meet the actual requirements of environmental protection production. Through understanding high-speed shear machines, You can see many good performance of the device in use.
Supermagnetic separator
Magnetic separation technology is a physical separation method that uses the force of a magnetic field to separate substances with different magnetic properties. Magnetic separation technology can be said to be a relatively ancient and mature technology, applied to mineral processing and porcelain clay industry. In 1845, the United States published industrial magnetic separators. Magnetic separation technology, as a separation method for two or more substances with magnetic differences, has been widely applied in fields such as ore selection, coal desulfurization, iron removal of raw materials such as glass and cement, purification of kaolin, cell separation in bioengineering, and catalyst recovery in the petrochemical industry.
Magnetic separation technology is an emerging technology used in water treatment engineering. Starting from the 1960s, the Soviet Union used magnetic coagulation to treat steel mill dust removal wastewater. In the late 1960s, American MIT professor Kohm invented a high gradient magnetic filter. In the 1970s, the United States applied magnetic flocculation and high gradient magnetic separation methods to treat wastewater from steel, food, chemical, papermaking, and other industries. In 1974, Sweden began using the disk method to treat steel rolling wastewater, and in the following 75 years, Japan developed a disk type "two second separator". From the mid-1970s to the early 1980s, China used magnetic agglomeration, magnetic disk, and high gradient magnetic separation methods for the treatment of steel making and rolling wastewater.
In recent years, magnetic separation technology has achieved certain research results in the treatment of electroplating wastewater, phenolic wastewater, lake water, food fermentation wastewater, municipal wastewater, steel wastewater, kitchen wastewater, slaughterhouse wastewater, petroleum produced water, etc. Some have been well applied in actual wastewater treatment.
Magnetic separator
The super magnetic separation water purification technology is a new technology used in the field of sewage treatment to replace traditional coagulation sedimentation, sand sedimentation, and inclined plate sedimentation for the removal of suspended solids.
It is different from traditional processes that rely on gravity separation of suspended solids, and uses rare earth permanent magnet technology to change passive precipitation into active adsorption and salvage, improving the efficiency of separation. The moisture content of the sludge separated by the super magnetic separation technology is less than 93%. The hydraulic retention time of the process is less than 5 minutes, resulting in a small footprint. The complete equipment for handling 10000 cubic meters of water per day has an installed power of only over 40 kilowatts.
The super magnetic separation water purification technology is mainly used for the treatment of wastewater from continuous casting and rolling in the metallurgical industry; Underground water treatment in the coal industry; Control of non-point source pollution in the "Milk Creek" of the slate industry; The landscape of rivers and lakes, emergency treatment of rivers and lakes in the river management industry, and underground reinjection water treatment in the petroleum industry.
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