High Efficiency Magnetic Sedimentation Unit with Compact Footprint and Excellent

The integrated magnetic coagulation sedimentation system, also known as a magnetic coagulation unit, magnetic coagulation clarifier, or integrated magnetic clarification system, is a high-efficiency wastewater treatment system combining magnetic-powder dosing, coagulation and flocculation, and solid-liquid separation in a single unit.

The process uses the ability of magnetic powder to bind with pollutants and enhance floc formation. Wastewater is first mixed with magnetic powder and coagulants to form dense magnetic flocs. These flocs settle rapidly in the sedimentation zone, achieving efficient separation of sludge from water.

The settled sludge is then processed through a magnetic-powder recovery system. The recovered magnetic powder is returned to the treatment process for reuse, while the remaining excess sludge is discharged for further treatment.

• High treatment efficiency: Settling velocity is approximately three to five times higher than conventional sedimentation systems, with hydraulic retention time typically only 20-30 minutes.
• Compact footprint: Requires only approximately one-third to one-half of the land area needed by conventional treatment processes.
• Excellent effluent quality: Suspended solids removal exceeds 95%, with treated-water turbidity reduced below 1 NTU under suitable conditions. Effective removal of total phosphorus and chemical oxygen demand (COD).
• Low operating costs: Magnetic-powder recovery rate exceeds 99%, allowing continuous recycling and reducing chemical consumption, powder replacement, and sludge-treatment costs.

• Municipal wastewater treatment plants
• Raw-water pretreatment at drinking-water treatment plants, including algae, turbidity, and phosphorus removal
• Advanced treatment and reclaimed-water reuse in industrial parks
• Treatment of polluted and odorous urban water bodies
• Purification of river water used for ecological replenishment
• Temporary and emergency water-supply treatment
• Post-disaster wastewater treatment

The integrated magnetic coagulation sedimentation system operates on the principle of magnetically enhanced coagulation and sedimentation.

During coagulation, magnetic powder acts as a ballast or seed material, working with coagulant and flocculant aid to accelerate floc formation and increase floc density.

During sedimentation, dense magnetic flocs settle rapidly under gravity, significantly improving solid-liquid separation efficiency.

In the magnetic separation stage, a high-intensity magnetic field separates magnetic powder from sludge. Recovered magnetic powder is returned to the treatment process for reuse, reducing operating costs.

Actual operating parameters should be determined according to wastewater characteristics, required effluent quality, chemical-dosing conditions, and project-specific design requirements.

Determine required treatment capacity and process parameters according to:

• Daily wastewater volume
• Types and concentrations of influent pollutants
• Required effluent quality
• Applicable discharge or reuse standards

For wastewater with high total phosphorus concentration, particular attention should be given to phosphorus-removal capacity and required chemical-dosing conditions.

Priority should be given to suppliers with extensive project experience, strong market reputation, and professional technical teams.

Review:

• Company qualifications and certifications
• Previous project references
• Actual equipment operating results
• Design and manufacturing capabilities
• Technical-support resources

Where necessary, conduct on-site inspections of supplier's manufacturing facility and reference projects.

Evaluate equipment from different suppliers comprehensively based on:

• Construction materials
• Magnetic-powder recovery rate
• Treatment efficiency
• Effluent quality
• Energy consumption
• Chemical consumption
• Equipment price
• Long-term operating and maintenance costs

Selection should not be based solely on lowest purchase price, as low-quality equipment may result in higher operating costs, unstable performance, and increased maintenance requirements.

Select suppliers capable of providing comprehensive technical support, including:

• Installation guidance
• Equipment commissioning
• Operator training
• Routine maintenance support
• Spare-parts supply
• Rapid fault-response service

Reliable after-sales service is essential for ensuring long-term, stable equipment operation.