How Magnetic Separators and High Shear Mixers Are Used

Magnetic coagulation sedimentation technologyRevolutionary Concrete Clarification Technology

Introduction to Magnetic Coagulation Sedimentation Technology

Magnetically flocculated sedimentation technology involves simultaneously adding a density ofOn 4.8-5.1, the magnetite binds with pollutants to form a cohesive mass, enhancing coagulation and flocculation effects. This results in denser and stronger flocs, achieving rapid sedimentation. The sedimentation rate of magnetic flocs can exceed 40 m/h. The magnetite is recycled and reused through high-shear machines and magnetic seed catchers (magnetic separator).

The entire process has a short dwell time, therefore, it is highly efficient for includingMost pollutants in TP exhibit a very low probability of dissolution, and the magnetic powder and flocculants added to the system effectively adsorb bacteria, viruses, oil, and various micro-particles. As a result, the removal efficiency of these pollutants is superior to traditional processes, with particularly significant phosphorus removal effects. Additionally, due to its high-speed sedimentation performance, it boasts numerous advantages over traditional methods, such as faster speed, higher efficiency, smaller land footprint, and lower investment. Magnetic coagulation sedimentation technology is a revolutionary new technique.

Magnetic coagulation sedimentation technology originated in the United States. Previously, the practical application of this technology in water treatment projects was limited due to the unresolved issue of magnetic powder recovery. Now, this technical challenge has been successfully addressed, thereby fully showcasing the technological and economic advantages of the magnetic coagulation sedimentation process. It has gained increasingly widespread application both domestically and internationally. Currently, in China, the engineering application of this technology in urban wastewater treatment, reclaimed water use, river black and odorous water treatment, high-phosphorus wastewater treatment, paper mill wastewater treatment, and oilfield wastewater treatment has gradually been implemented, yielding favorable results in all cases.

Section II: Magnetic Concrete Flocculation Process

Raw wastewater first enters the treatment facility.The 1st-stage mixing tank receives both the 1st-stage mixing tank and the coagulant PAC, which are thoroughly mixed before entering the 2nd-stage mixing tank. Here, they are mixed with recycled magnetic powder and回流污泥 to form flocs. Subsequently, they move to the 3rd-stage mixing tank, where they react with the flocculant PAM added, producing larger floc particles. These particles then rapidly settle in the sedimentation tank, with the effluent flowing into the next treatment process or being discharged directly as standard.

Sludge settled in the sedimentation pond is partially returned to the system via the sludge recycle pump.The 2nd-grade mixed pool continues to participate in the reaction, while another portion undergoes sludge stripping through a high-shear machine and then enters a magnetic separator for magnetic powder recovery. The recovered magnetic powder is reintroduced into the 2nd-grade mixed pool for further reaction, and the remaining sludge is transferred to the subsequent sludge treatment system. The dosing room prepares PAC and PAM solutions, which are then pumped to various dosing points. PAC is added to the 1st-grade mixed pool, while PAM is added to the 3rd-grade mixed pool.

Section III: Application Fields

Wastewater Sector: ExcludingSS, Total Phosphorus; except for particles and some colloidal COD

(Specifically including: wastewater treatment plant upgrading; advanced phosphorus and suspended solids removal; river black and odorous water treatment; heavy metal wastewater treatment; oily wastewater treatment)

Water Treatment Sector: Phosphorus and Algae Removal, Softening

Section 4: Process Features

The sedimentation rate is fast, reaching an impressive 40 meters per hour.

2. High surface load, up to 20 m³/㎡h to 40 m³/㎡h.

3. Short stay time, from inflow to outflow can be as low as 20 minutes.

4. Significantly reduces land footprint; sedimentation pond area can be as low as 1/20 of conventional processes.

5. High-efficiency phosphorus removal, with effluent Total Phosphorus levels as low as 0.05 mg/L.

6. High transparency with turbidity < 1 NTU.

7. High SS removal rate, effluent < 2 mg/L.

8. Magnetic Powder Recycling Utilization，Low operating costs.

9. Effectively optimize dosing of chemicals, reducing operational costs; the situation can save up to 15% in chemical addition.

The system is compact (also available as a portable processing unit), enabling automated control and easy operation.