Application of Magnetic Flocculation Technology in Wastewater Treatment Plant

Introduction to Magnetic Coagulation Sedimentation Technology

Magnetically enhanced coagulation sedimentation technology involves the simultaneous addition of a magnetic material to the traditional coagulation sedimentation process.4.8-5.1 magnetic powder is used to combine with pollutants to form a single entity, enhancing coagulation and flocculation effects. This results in denser and stronger flocs, achieving rapid sedimentation. The sedimentation speed of magnetic flocs can reach over 40 m/h. The magnetic powder is then recycled and reused through high-shear machines and magnetic seed catchers (magnetic separator).

The entire process has a short dwell time, therefore, it is suitable for includingMost pollutants within TP have a very low probability of undergoing reverse dissolution, and the magnetite and flocculants added to the system exhibit excellent adsorption properties against bacteria, viruses, oil, and various microscopic particles. Consequently, the removal efficiency of these pollutants is superior to traditional processes, with particularly remarkable phosphorus removal effects. Additionally, due to its high-speed sedimentation capabilities, it boasts numerous advantages over traditional methods, such as faster speed, higher efficiency, smaller land footprint, and lower investment costs. 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 overcome, highlighting the technological and economic advantages of the magnetic coagulation sedimentation process, which is gaining wider application both domestically and internationally. Currently, China is progressively implementing the engineering application of this technology in urban wastewater treatment, reclaimed water utilization, river pollution control, high-phosphorus wastewater treatment, paper mill wastewater treatment, and oil field wastewater treatment, all achieving satisfactory results.