Multi-stage aerobic and anoxic coupling bioreactor and sewage disposal method

Abstract

The invention relates to a multilevel aerobic and anoxic coupling sewage biochemical treatment method, which belongs to the field of environment-friendly water treatment. The invention discloses a biochemical reactor, which is provided with a plurality of diversion barrels, microbial carriers which are arranged inside and outside the diversion barrels and aeration devices which are arranged inside the diversion barrels. The method for treating sewage by utilization of the biochemical reactor is to provide the gas stripping amount for aeration in the diversion barrels through the aeration devices, to form aerobic biochemical environments inside the diversion barrels and anoxic environments outside the diversion barrels, to recycle the sewage in the aerobic environments inside the diversion barrels and the anoxic environments outside the diversion barrels, to realize aerobic and anoxic coupling, and to realize recycle between a plurality of aerobic and anoxic coupling areas by the method of assembling the plurality of the diversion barrels. The multilevel aerobic and anoxic coupling sewage biochemical treatment method can improve the efficiency of the biochemical reactor and reduce the sludge discharge of the biochemical reactor, and can particularly realize the multi-level nitrification and denitrification biochemical process in the same biochemical reactor.

Description

technical field [0001] The invention belongs to the field of environmental protection sewage treatment, in particular to a high-efficiency biochemical sewage treatment method that couples multi-stage aerobic and anoxic repeated cycles. Background technique [0002] The biochemical processes in the biochemical water treatment methods in the known technology include aerobic, anaerobic and anoxic processes. Anoxic and aerobic processes are often combined in known techniques. The most common sewage treatment method combined with anoxic and aerobic is to make sewage or anaerobically treated sewage enter the anoxic pool first, then enter the aerobic pool, and then return part of the water produced in the aerobic pool to the Anoxic pool. Such an aerobic-anoxic coupling method can realize the redox process of pollutants in sewage. In particular, when the raw water contains amine compounds, the amine compounds can be oxidized into nitrite and nitrate through aerobic reaction under...

AI Technical Summary

Problems solved by technology

However, this technology only achieves multiple repeated cycles in an aerobic environment, and there is no anoxic biochemical process in the bioreactor

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