Dynamic multistage anoxic / aerobic sewage treatment method

Abstract

The invention relates to a dynamic multistage anoxic / aerobic sewage treatment method. The method comprises steps of: installing an aeration apparatus at bottom of an aeration tank; establishing a dynamic multistage anoxic / aerobic sewage treatment process model; determining an oxygen supply energy consumption performance function and constrained conditions of the dynamic multistage anoxic / aerobic sewage treatment process; dynamically determining two technological parameters of area distribution for anoxic zone and aerobic zone, and an operation period of the dynamic multistage anoxic / aerobic process, based on the above dynamic multistage anoxic / aerobic sewage treatment process model and the oxygen supply energy consumption performance function; and forming a configuration containing a plurality of anoxic zones and aerobic zones in the aeration tank by adjusting aeration rate of the aeration apparatus. The method of the invention can raise ammonia nitrogen removal capability in the sewage treatment process and reduce energy consumption of the sewage treatment process on the premise of guaranteeing stable and standard reached water outlet.

Description

technical field [0001] The invention relates to a sewage treatment technology, in particular to a dynamic multi-stage anoxic / aerobic sewage treatment method. Background technique [0002] With people's attention to environmental issues, the country's standards for sewage discharge are becoming more and more stringent, especially higher requirements for the ammonia nitrogen removal capacity of sewage treatment plants. [0003] At present, water bodies in many countries and regions in the world have serious eutrophication phenomenon. The main substances causing eutrophication in water bodies are nitrogen and phosphorus. Nitrogen and phosphorus removal has become a common concern of all countries in the world. In recent years, cyanobacteria blooms have broken out in many watersheds such as Taihu Lake in my country. The reason is that a large amount of urban domestic sewage, industrial wastewater, and agricultural production and life pollutants containing ammonia nitrogen and ph...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of high energy consumption and low ammonia nitrogen removal efficiency in the existing sewage treatment technology, the technical problem to be solved by the present invention is to provide a dynamic multi-stage Anoxic / Aerobic Wastewater Treatment Methods

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