Device and method for synchronously treating domestic sewage and late landfill leachate by coupling short-cut nitrification-anaerobic ammonia oxidation with denitrification

Abstract

The invention discloses a device and a method for synchronously treating domestic sewage and late landfill leachate by coupling short-cut nitrification-anaerobic ammonia oxidation with denitrification, and belongs to the field of biological sewage treatment. The device comprises a raw water tank, a short-cut nitrification reactor, a middle water tank and an anaerobic ammonia oxidation coupling denitrification reactor. Domestic sewage enters the short-cut nitrification reactor, short-cut effluent is realized through low-oxygen aeration and real-time control, and effluent NO2 <->-N enters the middle water tank and enters the anaerobic ammonia oxidation coupling denitrification reactor after being mixed with part of late landfill leachate. A synergistic reaction of anaerobic ammonia oxidation nitrogen removal and denitrification nitrogen removal is realized in the anaerobic ammonia oxidation coupling denitrification reactor at the same time, so that the nitrogen removal effect is achieved. According to the invention, efficient and energy-saving urban sewage denitrification is realized by fully utilizing the synergistic effect among microorganisms.

Description

technical field [0001] The short-range nitrification-ANAMMOX coupled denitrification device and method for realizing simultaneous denitrification of urban domestic sewage and late-stage landfill leachate involved in the present invention belong to the field of sewage biological treatment, and are suitable for low C / N ratio urban domestic sewage and high Denitrification of ammonia nitrogen landfill leachate. Background technique [0002] Human activities will produce a large amount of wastewater, which contains by-products of various elements such as C, N, and P, leading to nitrogen and phosphorus pollution of water bodies. Among them, the nitrogen in urban sewage mainly exists in the form of organic nitrogen and ammonia nitrogen, which not only poses a great threat to human health, but also causes eutrophication of water bodies, damages the ecological environment, and causes water shortages. With the rapid development of industry and cities in our country, the total amount ...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a short-range nitrification-ANAMMOX coupled denitrification device and method for synchronous denitrification of urban domestic sewage and late-stage landfill leachate. The purpose is to solve the problem of insufficient carbon sources in the traditional sewage treatment process, while Realize the improvement of effluent water quality on the premise of saving energy and reducing consumption

Images