Electrochemical coupling membrane biological treatment process and system for town sewage treatment

Abstract

The invention discloses an electrochemical coupling membrane biological treatment process and system for town sewage treatment. The system comprises an adjusting tank, an anaerobic tank, an anoxic tank, an aerobic tank, an electrochemical membrane biological reaction tank, a clean water tank and a sludge tank. According to the electrochemical coupling membrane biological treatment process and the electrochemical coupling membrane biological treatment system for urban sewage treatment, the electrochemical coupling membrane biological reaction tank is arranged, hydroxyl radicals with strong oxidizing property are generated in the operation process of an electrochemical device, extracellular polymeric substances and soluble microbial products in the membrane biological treatment system are degraded, and MBR membrane pollution and blockage can be reduced; the cationic hydrolysate generated by the electrochemical device can be physically and chemically combined with phosphorus in a water body, so that the defect of insufficient biological phosphorus removal capacity of a membrane biological treatment system is overcome; and compared with the traditional phosphorus removal process and system by adding chemical agents, the provided system and process greatly reduce sludge yield, and reduce the residual sludge discharge; and the high sludge concentration required by a membrane biological treatment system is favorably maintained, and the treatment efficiency of the system is improved.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to an electrochemical coupling membrane biological treatment process and system for urban sewage treatment. Background technique [0002] With the development of modern industrial technology, the problem of water pollution has become very serious. In areas with relatively developed economies, there are hardly any clear springs and flowing water. Moreover, this kind of pollution continues to develop, spreading to deep mountains, old forests, and remote areas. At the same time, people have also spent a lot of manpower, material and financial resources on sewage treatment, and various water purification technologies have emerged almost at the same time as wastewater is produced. [0003] At present, the existing membrane biological treatment process produces a large amount of sludge when purifying sewage, which will lead to blockage of the MBR membrane, resulting in the inabil...

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Problems solved by technology

[0003] At present, the existing membrane biological treatment process produces a large amount of sludge when purifying sewage, which will lead to blockage of the MBR membrane, resulting in the inability of the water purification system to continue, and the membrane biological treatment process is not capable of treating phosphorus in sewage.

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