Multistage aerobic enhanced phosphorus removal APO-M system and technology

Abstract

The invention relates to a multistage aerobic enhanced phosphorus removal APO-M system. The system includes an anaerobic pool (AP), an aerobic pool (O) and an MBR pool (M). The anaerobic pool is communicated with the aerobic pool, the aerobic pool is communicated with the MBR pool, wherein the system also includes a chemical phosphorus removal agent adding device for adding of a chemical phosphorus removal agent into the MBR pool. The aerobic pool is used for aerobic treatment, including biological phosphorus removal, on sewage; the MBR pool is used for further aerobic treatment of sewage andchemical phosphorus removal treatment. The invention also relates to a multistage aerobic enhanced phosphorus removal APO-M technology adopting the system for simultaneous biological phosphorus removal and chemical phosphorus removal on sewage. The system and process provided by the invention can reach a high standard effluent level with a total phosphorus content of less than or equal to 0.2mg / L,and can achieve chemical phosphorus removal in the MBR pool, and have the advantages of space saving, investment saving and easy maintenance.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, in particular to a multi-stage aerobic enhanced phosphorus removal A P O-M system and process. Background technique [0002] With the growth of population, the modernization of industry and agriculture, and the development of urbanization, the amount of domestic sewage and industrial and agricultural wastewater is increasing day by day, which puts forward higher requirements for sewage treatment. With the deepening of urbanization and the improvement of infrastructure in my country, although the rate of sewage collection and treatment has increased, but due to the limitation of nitrogen and phosphorus removal technology in sewage treatment, the nitrogen and phosphorus indicators of the tail water of sewage treatment plants have always been affected. An important factor in the trophic level of water bodies. With the introduction of my country's "Water Pollution Prevention and Control Act...

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Problems solved by technology

Therefore, the invention patent application only plays the role of biological phosphorus removal in sewage, so there is a problem of insufficient phosphorus removal effect. In fact, the invention patent also fails to provide phosphorus removal effect data

Moreover, the invention patent application sets a mixed liquid return pipe in the MBR reaction tank to return the mixed liquid to the anoxic tank, which will cause a large impact on the anoxic environment of the anoxic tank

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