Membrane bioreactor domestic sewage treatment nitrosation quick start method

Abstract

The invention relates to a membrane bioreactor domestic sewage treatment nitrosation stable operation method, and belongs to the field of city sewage treatment project. The method comprises the main steps that: city sewage plant reflux sludge is inoculated; with a high-ammonia-nitrogen-SBR limited-oxygen low-DO operations strategy, nitrosation sludge is acclimation is carried out; continuous flow operation is carried out; thorough a method for gradually reducing substrate concentration, ammonia nitrogen concentration is close to actual domestic sewage concentration; and domestic sewage is introduced according to different ratios; and the water is completely altered into domestic sewage. During a domestic sewage operation process, parameters such as dissolved oxygen and HRT are regulated, and ammonia nitrogen oxidation rate is controlled higher than 60%; effluent NO2<->-N / NH4<+>-N reaches 1.0-1.3, and stable operation is maintained. According to the invention, membrane bioreactor is combined with the nitrosation process, such that domestic sewage nitrosation stable operation is finally realized.

Description

technical field [0001] The invention relates to a practical sewage biological denitrification technology, which uses a membrane bioreactor to realize partial nitrosation by controlling the ratio of ammonia nitrogen oxidation to nitrous in sewage, and is an anaerobic ammonium oxidation (ANAMMOX) for urban domestic sewage. The process provides suitable influent water for autotrophic denitrification. Background technique [0002] my country is one of the countries with the poorest per capita water resources in the world. Especially in recent decades, with the acceleration of urbanization and industrialization, the crisis of water resources has been exacerbated and brought serious disasters to people's production and life. Nitrogen and phosphorus pollution has become the top priority of sewage treatment. At present, most sewage plants still rely on traditional nitrification and denitrification for denitrification. They are faced with the problem of insufficient carbon sources an...

AI Technical Summary

Problems solved by technology

At present, most sewage plants still rely on traditional nitrification and denitrification for denitrification, which is faced with the problem of insufficient carbon sources and competition for carbon sources between denitrification and phosphorus removal, resulting in the effluent N and P not meeting the standards

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