High-efficiency nitrogen and phosphorus removal miniature membrane-process domestic sewage treatment device

Abstract

The invention relates to a high-efficiency nitrogen and phosphorus removal miniature membrane-process domestic sewage treatment device which comprises a regulating reservoir, a membrane bioreactor unit, a phosphorus removal sedimentation basin and a clean water basin which are communicated in sequence by virtue of pipelines, wherein the membrane bioreactor unit comprises an anaerobic pool, an aerobic tank, a membrane separation component, a nitrification liquor return delivery device and an aerator pipe component; the aerobic tank is arranged in the anaerobic pool; the regulating reservoir isrespectively communicated with the anaerobic pool and the aerobic tank by virtue of pipelines; the membrane separation component is arranged in the aerobic tank, and the liquid outlet of the membraneseparation component is communicated with the inlet of the phosphorus removal sedimentation basin by virtue of a first liquid delivery device; the anaerobic pool is communicated with the inlet of thephosphorus removal sedimentation basin by virtue of a second liquid delivery device; the aerator pipe component is laid at the bottom of the aerobic tank and externally connected with an air deliverydevice; the aerobic tank and the anaerobic pool are communicated by virtue of a return pipe. The domestic sewage treatment device disclosed by the invention has the advantages that flexible regulationand treatment can be performed according to main pollution components in sewage, so that the sewage treatment stably reaches the standard, the degree of integration is high, and the floor space is small.

Description

technical field [0001] The invention relates to sewage treatment technology, in particular to a miniaturized membrane method domestic sewage treatment device for high-efficiency phosphorus and nitrogen removal. Background technique [0002] The sewage generated in the process of human life is one of the main sources of pollution of water bodies, mainly kitchen waste water, toilet flushing waste water and washing sewage. Its amount is closely related to the standard of living. Domestic sewage contains a large amount of organic matter, such as cellulose, starch, sugar and fatty protein; it also often contains pathogenic bacteria, viruses and parasite eggs; inorganic salts such as chloride, sulfate, phosphate, bicarbonate and sodium, Potassium, calcium, magnesium, etc. Under the action of anaerobic bacteria, it is easy to produce malodorous substances. Some small-scale domestic sewage treatment, such as rural areas, hotels, catering enterprises, service stations, etc., have ...

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Problems solved by technology

Some small-scale domestic sewage treatment, such as rural areas, hotels, catering enterprises, service stations, etc., have the characteristics of less personnel, less domestic sewage production, and large changes in the production of domestic sewage with seasonal changes, resulting in the discharge of sewage COD, NH 3 N and total phosphorus exceed the standard and cannot meet the requirements of the relevant emission standards. Under the current situation of increasing environmental protection requirements in our country, there are great environmental pollution hidden dangers and environmental management risks. A scientific and effective treatment measure is urgently needed to fundamentally solve the problem. this question

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