Sequencing batch sludge deep dewatering equipment and method adopting electroosmosis

Abstract

The invention relates to sequencing batch sludge deep dewatering equipment and method adopting electroosmosis. The equipment comprises a closed frame, wherein an anode assembly and a cathode assembly are arranged in the frame; the cathode assembly comprises a driving wheel set supported at the lower part of the frame, the driving wheel set is sleeved with annular cathode filter cloth connected end to end, and cathode plates are arranged on the inner side of the cathode filter cloth; the anode assembly comprises a group of anode plates opposite to the cathode plates and a fixed seat supported at the upper part of the frame, and the anode plates are supported on the fixed seat respectively through driving pieces; anode filter cloth is arranged on one side, back to the corresponding driving piece, of each anode plate; sludge treatment space is formed between the anode plates and the cathode plates; and a middle layer and a surface active layer are arranged on the surface of each anode plate sequentially. The method comprises a start stage, a normal circulation work stage and an end stage. The service life of an anode can be prolonged, the electric energy consumption can be reduced, and biochemical sludge with the moisture content of 80%-85% can be dewatered until the moisture content reaches 55%-60%.

Description

technical field [0001] The invention relates to a sequence batch type electroosmotic sludge deep dehydration equipment and method, which uses electroosmotic technology to perform deep dehydration treatment on biochemical sludge in a sewage treatment plant, and belongs to the technical field of electrochemical technology and sewage sludge treatment. Background technique [0002] According to the applicant's understanding, the current urban domestic sewage treatment mainly adopts the biological oxidation process, which uses microbial metabolism to convert organic pollutants in sewage into stable and harmless substances. This process will produce a large amount of biochemical sludge during the treatment process. If the sludge is not properly disposed of, it will bring great harm to the environment. Sludge treatment and disposal requirements meet the requirements of "reduction, stabilization, harmlessness, and resource utilization". In the "four modernizations", reduction is the...

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Problems solved by technology

[0017] However, the existing technologies represented by the above two patent documents still cannot solve the two technical problems of short service life of the anode and high power consumption of electroosmosis.

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