Magnetic flocculation reactor

Abstract

The invention discloses a magnetic flocculation processor for overflow sewage, belonging to the technical field of overflow sewage treatment equipment. In the invention, overflow sewage is purified by taking advantages of the double flocculation actions of a rapid stirring area and a slow stirring to enable a magnetic seed composite flocculating agent to absorb suspended matters in overflow sewage to form a magnetic flocculated constituent, rapidly absorbing the magnetic flocculated constituent by a magnetic disc in water through a magnetic separation device, leading the overflow sewage to pass through a mud scraper and a screw conveyer to realize magnetic seed separation and recycling, and then leading the overflow sewage to pass through a sedimentation area. The invention integrates flocculation, magnetic separation, sedimentation and magnetic seed recycling into a whole, and can adapt to the characteristic of great change in water quantity and water quality of the overflow sewage and achieve the purposes of rapid reaction and good treatment effect.

Description

technical field [0001] The invention belongs to the technical field of overflow sewage treatment equipment, and in particular relates to a magnetic flocculation reactor, especially a sewage treatment reactor used in conjunction with a magnetic seed composite flocculant. Background technique [0002] The treatment of overflow sewage has gradually become an important issue in environmental protection. At present, the overflow sewage treatment devices are mainly ACTIFLO process, Densadeg+Biofor process and Lemalla Plate process. In addition, "a permanent magnetic separation and purification device for eutrophic algae water in lakes" is similar to the present technology. [0003] 1. The ACTIFLO process is the technology of Kruger Company. Its main purpose is to form flocs by adding coagulants and flocculants, increase the weight of flocs by adding sand, and accelerate the sedimentation speed of flocs, so as to achieve efficient treatment of overflow sewage Purpose, the disadva...

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Problems solved by technology

[0003] 1. The ACTIFLO process is the technology of Kruger Company. Its main purpose is to form flocs by adding coagulants and flocculants, increase the weight of flocs by adding sand, and accelerate the sedimentation speed of flocs, so as to achieve efficient treatment of overflow sewage Purpose, the disadvantage of this process is high cost and poor adaptability to changes in sewage water volume

[0004] 2. Densadeg + Biofor is a registered process of Ondeo-Deliman Company. Its advantages are compact structure, easy to seal, and small impact on the environment. The disadvantage is that the sewage treatment volume is small and intermittent

[0005] 3. The Lelnalla Plate process belongs to Parkson Company. Its advantages are good treatment effect and short reaction time. The disadvantages are high cost, small amount of sewage treatment and long reaction time.

This technology is a water treatment technology for cyanobacteria in the eutrophic water body of the lake. The treatment effect on the overflow sewage is poor, and the magnetic species cannot be recovered.

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