Novel low-carbon sewage deep dephosphorization process system based on suspension medium layer

Abstract

The invention provides a novel low-carbon sewage deep dephosphorization process system based on a suspended medium layer, which comprises a suspended medium dephosphorization system and a sand filter system. The suspended medium dephosphorization system comprises a suspended medium dephosphorization system water inlet pipe, a water inlet of a suspended medium dephosphorization reactor, a water inlet dosing system, a water inlet dosing pipe, the suspended medium dephosphorization reactor, a stirrer and a water outlet pipe of the suspended medium dephosphorization reactor; the sand filter system comprises a sand filter, a sand filter water inlet pipe, a filter material layer in the sand filter, a sand filter water outlet pipe, a backwashing system and a backwashing water inlet pipe. According to the system, TP and SS in secondary effluent can be further effectively removed, and meanwhile, the dosage of chemical agents in the system is reduced, so that the ecological safety of the effluent of the sewage treatment system is improved, carbon emission reduction is effectively promoted, and sewage resource utilization is promoted.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a novel low-carbon sewage deep phosphorus removal process system based on a suspension medium layer. Background technique [0002] The deterioration of the water environment caused by water eutrophication has seriously affected the quality of life of the people. Phosphorus, as the main limiting factor of water eutrophication, needs to be effectively controlled. In recent years, Beijing, Tianjin, Jiangsu (Taihu Lake), Anhui (Chaohu Lake), Kunming (Dianchi Lake), Hebei (Daqing River) and other sensitive areas have successively promulgated new urban sewage discharge standards. Phosphorus is subject to stricter controls. At present, a large number of urban sewage treatment plants in my country generally use excessive dosage of chemical phosphorus removal agents to strengthen phosphorus removal to ensure the stability of total phosphorus in the effluent. However,...

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Problems solved by technology

At present, a large number of urban sewage treatment plants in my country generally adopt the method of excessive dosing of chemical phosphorus removal agents to strengthen phosphorus removal to ensure the stability of total phosphorus in the effluent. However, problems such as increased ecological risks of the effluent caused by excessive dosage of chemicals have not been properly resolved.

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