Device and method for realizing deep denitrification of domestic sewage by half shortcut nitrification-anaerobic ammonia oxidation coupled sulfur-based autotrophic denitrification process

Abstract

The invention discloses a device and method for realizing deep denitrification of domestic sewage by half shortcut nitrification-anaerobic ammonia oxidation coupled sulfur-based autotrophic denitrification process, and belongs to the field of biological sewage treatment. The device comprises a raw water tank, a short-cut nitrification reactor, an adjusting water tank and an anaerobic ammonia oxidation coupled denitrification reactor. Domestic sewage enters the semi-short-cut nitrification reactor, the mass concentration ratio of NO2N-- to NH4+- N in effluent is controlled to be 1-1.32 in realtime, the effluent enters an intermediate water tank and then enters the anaerobic ammonia oxidation coupled autotrophic denitrification reactor, synergistic reaction of anaerobic ammonia oxidation and sulfur-based autotrophic denitrification is achieved in the reactor at the same time, and a denitrification effect is achieved. By fully utilizing the synergistic effect among microorganisms, the denitrification efficiency is improved, and efficient and energy-saving deep denitrification of municipal sewage is realized.

Description

technical field [0001] The semi-short-cut nitrification-anammox coupled autotrophic denitrification device and method for deep denitrification of urban domestic sewage involved in the present invention belongs to the field of sewage biological treatment and is suitable for deep denitrification of urban domestic sewage with low C / N ratio. 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. The traditional nitrification and denitrification sewage biological treatment technology has the problems of high energy consumption and low denitrificatio...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a semi-short-cut nitrification-anammox coupled sulfur denitrification device and method for deep denitrification of urban domestic sewage. The purpose is to solve the problem of insufficient carbon source in the traditional sewage treatment process and improve the quality of effluent water at the same time.

Images