Device and method for nitrogen and phosphorus removal treatment by denitrification on high-ammonia nitrogen anaerobic ammonia oxidation effluent and domestic sewage

Abstract

The invention discloses a device and method for nitrogen and phosphorus removal treatment by denitrification on high-ammonia nitrogen anaerobic ammonia oxidation effluent and domestic sewage, belonging to the field of biological sewage treatment. The device comprises a high-ammonia nitrogen inflow water tank, an integrated partial nitrification and anaerobic ammonia oxidation reactor, a sedimentation tank, a domestic sewage inflow water tank, a denitrification nitrogen and phosphorus removal reactor and an effluent water tank sequentially connected in series. The method comprises the following steps: in the integrated reactor, effectively removing nitrogen of the high-ammonia nitrogen wastewater through the effect of partial nitrification and anaerobic ammonia oxidation; in the denitrification nitrogen and phosphorus removal reactor, performing anaerobic phosphorus release by phosphorus-accumulating bacteria by use of an organic carbon source in the domestic sewage, and performing hypoxia denitrification phosphorus removal by use of nitrate nitrogen in the anaerobic ammonia oxidation effluent; and finally, further absorbing phosphorus at the aerobic zone in accompany with the nitrification effect generated by the nitrification bacteria. According to the method, the nitrogen removal by anaerobic ammonia oxidation and phosphorus removal by denitrification are coupled into a biological nitrogen and phosphorus removal system for sewage, the nitrate nitrogen generated in the anaerobic ammonia oxidation process is effectively utilized, and the oxygen consumption and energy consumption are greatly reduced.

Description

technical field [0001] The invention relates to the technical field of sewage biological treatment, in particular to a device and method for treating high-ammonia nitrogen anaerobic ammonium oxidation effluent and domestic sewage by denitrification, denitrification and dephosphorization Background technique [0002] With the improvement of human living standards, the rapid growth of population, and the rapid development of industry, the discharge of sewage is increasing day by day, and the pollution of water environment is becoming more and more serious. The denitrification and phosphorus removal of sewage has become a hot spot for experts and scholars at home and abroad. However, in the actual application process of the traditional biological nitrogen and phosphorus removal process, it often occurs that the denitrification effect and the phosphorus removal effect cannot be optimal at the same time. low efficiency and high operating costs. [0003] Anaerobic ammonium oxidat...

AI Technical Summary

Problems solved by technology

The invention not only solves the problem of high nitrate nitrogen in the anaerobic ammonium oxidation effluent, but also has the characteristics of simple process flow, strong controllability, and flexible operation, which can reduce process operating costs and energy consumption

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