Sewage treatment device and sewage treatment method

Abstract

The invention relates to a sewage treatment device and a sewage treatment method, and is used for treating mixed industrial sewage taking antibiotic pharmaceutical wastewater which is hardest to biologically degrade as a primary; the sewage undergoes nitrogen and phosphorus removal through mechanical interception, chemical oxidation, multiple biological degradation and chemical flocculation effects with a grid, a grit chamber, an adjusting primary sedimentation pool, a modified type inverted AA / O pool, an aerated biological filter pool, a flocculation sedimentation pool and a sludge concentration pool, and thus a quite good treatment effect is obtained, and CODcr, NH3-N, TP and other indicators of the effluent all reach first grade discharge standards; the method is stable and reliable in treatment effect and relatively low in operation cost. An improved anaerobic pool, anaerobic pool, aerobic pool and other biochemical reaction pools are each provided with an independent mud-water automatic separation device by self, so that sludge backflow is eliminated, the power consumption is relatively greatly reduced, the sewage treatment cost is reduced, and economy and technology dual advantages are provided. The coupling method provided by the invention is not easily affected by feedwater water quality fluctuation and other factors, allows the process to have strong resistance to shock loading, has the characteristics of good sludge sedimentation performance, no occurrence of a sludge expansion phenomenon and the like, and has a wide application prospect.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a sewage treatment device and a sewage treatment method thereof. Background technique [0002] At present, food, papermaking, printing and dyeing, pharmaceutical, chemical and other enterprises discharge a large amount of sewage in the production process. These sewage belong to organic wastewater. This organic sewage needs to be treated before it can be discharged into nature, otherwise it will be seriously polluted if it is directly discharged into natural water bodies. Water Environment. [0003] In recent years, the problems of water environment pollution and water eutrophication have become increasingly serious. Nitrogen and phosphorus are the main factors causing water eutrophication. With the improvement of public environmental awareness and stricter restrictions on nitrogen and phosphorus discharge at home and abroad, the research and development of economical and efficie...

AI Technical Summary

Problems solved by technology

[0006] At present, domestic and foreign studies on the AA / O method and its deformation process mostly focus on domestic sewage, but there are few reports on the direct treatment of industrial wastewater by the AA / O method, especially the fresh industrial wastewater mainly composed of antibiotics and pharmaceuticals. According to the report, there is no report on the direct treatment of industrial wastewater mainly composed of antibiotics and pharmaceuticals by the inverted AA / O method

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