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Device and method for treating sewage by magnetic flocculation separation

A sewage device and separation treatment technology, which is applied in the direction of flocculation/sedimentation water/sewage treatment, chemical instruments and methods, magnetic field/electric field water/sewage treatment, etc., which can solve the problems of inability to recycle chemicals, increase treatment costs, and large input, etc. question

Inactive Publication Date: 2019-04-19
上海中海龙高新技术研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, relying on continuous dosing, the input is large and the cost is high, and the medicament cannot be recycled, and when the ion concentration in the sewage is too high, it is easy to cause blockage of the membrane and equipment, which makes the treatment cost continue to increase, and brings great harm to the breeding enterprises. caused a lot of trouble

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] Influent water quality is COD100~2000mg / L, total nitrogen 50~150mg / L, ammonia nitrogen 50~100mg / L, TP5~7mg / L, SS30~100mg / L.

[0012] 1. Sewage enters the regulating tank through the grille for storage, and enters the aerobic tank through the pipeline; the water inflow and aeration volume are controlled by PLC, and the aeration volume is controlled so that the DO in the aerobic tank is less than 1.0 mg / L; Adding ammonia-nitrogen degrading bacteria can realize stable short-range nitrification, and convert ammonia nitrogen in sewage into mainly nitrite nitrogen; through nitrification and denitrification, the effect of ammonia and nitrogen removal can finally be achieved. Through the first stage of treatment, the effluent can reach the goals of CO D ≤ 50mg / L, total nitrogen ≤ 15mg / L, and ammonia nitrogen ≤ 5mg / L.

[0013] 2. The effluent from the aerobic chamber enters the magnetic flocculation device, and the magnetic powder and coagulant are added into the mixing tank. Af...

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PUM

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Abstract

The invention relates to a sewage treatment device and method, particularly relates to a device and method for treating sewage by magnetic flocculation separation, and belongs to the field of sewage treatment. The device comprises a grating, an adjusting tank, an aerobic tank, a mixed sedimentation tank and a magnetic recovery device. After sewage enters the adjusting tank through the grating, thewater inlet amount and the aeration quantity are controlled through a PLC, ammonia nitrogen degrading bacteria are added to finally achieve the effect of deamination and denitrification by nitrification and denitrification. Aerobic bin effluent enters into the mixed sedimentation tank, a coagulant aid and a flocculating agent are added to enable suspended matters and colloid to agglomerate, so that supernate is separated out from the sewage, and through the magnetic recovery device, magnetic powder is recycled, and sludge is removed. According to the invention, the sewage reaches the emissionstandard by virtue of the magnetic separation method.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a device and method for treating sewage by using a magnetic flocculation separation method. Background technique [0002] With the improvement of people's living standards, the consumption demand for meat has increased, and the aquaculture industry has also developed rapidly. While large-scale farming meets people's daily needs, it also has a greater impact on the environment. There are not only COD and BOD in the aquaculture wastewater 5 How to effectively remove ammonia nitrogen, TP and COD is the focus and difficulty of aquaculture wastewater. The aquaculture wastewater is mainly composed of organic pollution, which has high organic content and high ammonia nitrogen, but less toxic substances and better biodegradability. [0003] At present, with the advancement of technology and the continuous improvement of sewage treatment technology, through dosing control, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/48C02F9/14C02F101/16
CPCC02F1/28C02F1/488C02F1/52C02F3/34C02F9/00C02F2101/16C02F2209/005C02F2209/08C02F2209/14C02F2209/16
Inventor 朱恩灿邢斌杨丽
Owner 上海中海龙高新技术研究院