Integrated Magnetic Coagulation Sedimentation Treatment Device

• Type: Activated Carbon
• Usage: Environmental Protection
• Motive Force: Electric power
• Style: Plate and Frame
• Performance: Efficient Filtration
• Certification: CE
• Model NO.: FL
• The Settling Speed Is Fast: Reaching a High Settling Speed of 40m/H
• High Surface Load: up to 20m 3;/ M2 H~40m 3;/ M2h
• Short Retention Time: From Inlet to Outlet, Can Be as Low as 20 Minutes
• Effectively Reduce The Floor Area of The: Which Can Be as Low as 1/20 of The Conventional Pr
• Efficient Phosphorus Removal: with Optimal Effluent Tp as Low as 0.05mg/L
• The Effluent Has High Transparency: Turbidity<1 Ntu
• High Ss Removal Rate: Optimal Effluent<2mg/L
• Magnetic Powder Recycling: with a Recovery Rate of Over 99% and Low Operating
• Effectively Optimize The Dosage of Chemi: Reduce Operating Costs, and in The Best Case, Save
• The System Is Compact (Can Also Be Made: Which Can Achieve Automatic Control and Is Easy to
• Trademark: FL
• Origin: China
• HS Code: 9001100009
• Production Capacity: 500

Product Description

Product Introduction
Including: main body/magnetic coagulation mixer/magnetic particle magnetic coagulation dosing device/separator/high shear machine/magnetic coagulation integrated phosphorus removal equipment
Function: sewage magnetic coagulation sedimentation.
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.
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.
Principle of magnetic coagulation sedimentation technology
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.
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.
Key points of magnetic coagulation process control
1. Control of water volume
The inlet water volume of the magnetic coagulation process generally does not exceed 130% of the design load, and exceeding the design load can easily lead to insufficient coagulation time and insufficient sedimentation time in the sedimentation tank, resulting in mud leakage. In addition, due to the limitations of the water passage of the magnetic coagulation system, the flow rate exceeding the load will cause overflow in the magnetic coagulation mixing pool. The fluctuation of inlet water volume should not be too large, as large fluctuations in water volume can easily lead to large fluctuations in the surface load of the sedimentation tank, which can cause mud leakage due to impact. Therefore, the flow rate should be increased in order.
2. Control of influent water quality
For magnetic coagulation, the water quality of the inflow is mainly controlled by pH, as coagulation and sedimentation have pH requirements, generally controlled between 6-9.
3. Control of dosing system
Control of dosing sequence: The dosing sequence for the operation effect is to first add magnetic powder and PAC, and then add PAM. If magnetic powder is added, it will cause the magnetic powder to not participate in the coagulation reaction in time, resulting in a decrease in the efficiency of coagulation and a decrease in settling effect. Control of dosing amount: As mentioned earlier, the control range of dosing amount is adjusted according to the actual debugging situation, and the dosing amount is affected by the water quality and quantity of influent, This requires operators to observe the operation of magnetic coagulation every day and adjust the dosage to ensure the effectiveness of coagulation.
The control of the pam dispensing machine is generally an automatic device, with a constant concentration of 0.10% -0.15%. The dosage can be controlled by increasing or decreasing the frequency of the metering pump according to the PLC, usually between 0.5-1mg/l.
The PAM dosing device needs to regularly clean the internal moisture absorbing blocks and regularly check the liquid viscosity in the finished product tank. If there are problems, promptly handle them on-site or contact the manufacturer for equipment maintenance and replacement.
Equipment characteristics
1. The settling speed is fast, reaching a high settling speed of 40m/h;
2. High surface load, up to 20m ³/ m2 h~40m ³/ m2.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.
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.
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.
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

Product parameters
product name                   FL series magnetic separator
Water treatment capacity      1000~20000m^3/d
Installed power                12~20KW
cover an area                  15~90m^2
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	8m^3/h	5~17r/min	380V 1.5KW
Ф400×1000	14m^3/h	5~25r/min	380V 2.2KW
Ф600×600	12m^3/h	5~17r/min	380V 2.2KW
Ф600×1000	20m^3/h	5~25r/min	380V 2.2KW
Ф900×1000	30m^3/h	5~25r/min	380V 3KW

Integrated magnetic coagulation process equipment selection:
model	processing capacity(m^3/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	GB1818918-2002 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