Bio-membrane process denitrifying phosphorus removal and power generation device

Abstract

The invention discloses a bio-membrane process denitrifying phosphorus removal and power generation device and belongs to the technical field of sewage disposal. The bio-membrane process denitrifying phosphorus removal and power generation device comprises a water tank, an anaerobic tank, a primary sedimentation tank, an aerobiotic tank, an anoxic tank and an end sedimentation tank which are connected in sequence, wherein the anaerobic tank and the aerobiotic tank are spaced by an ion exchange membrane, the anaerobic tank serves as an anode chamber of a microbial fuel cell, the aerobiotic tank serves as a cathode chamber of the microbial fuel cell, the anode chamber and the cathode chamber are respectively and externally connected with a resistance box to form a closed circuit, the primary sedimentation tank and the anoxic tank are connected through a sludge delivery pipeline, the end sedimentation tank and the anaerobic tank are connected through a sludge return pipeline, and the end sedimentation tank is further provided with a water outlet and a sludge discharging port. The bio-membrane process denitrifying phosphorus removal and power generation device utilizes a two-sludge system process and microbial fuel cell coupling technology to dispose domestic sewage, can produce a stable voltage value while reducing the COD, TP and TN concentration in the sewage, effectively treats pollutants in the sewage and also produces clean electric energy.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a biofilm denitrification and phosphorus removal power generation device, which is a new technology for generating electric energy while treating COD, nitrogen, phosphorus and other pollutants in sewage. Background technique [0002] The traditional denitrification phosphorus removal process is mainly composed of anaerobic, aerobic, and anoxic reactors, which are divided into single sludge process and double sludge process. In the single-sludge process, nitrifying bacteria and denitrifying phosphorus-accumulating bacteria exist in the same reactor, and successively experience three operating environments: anaerobic, anoxic, and aerobic, but in the double-sludge process, nitrifying bacteria and The denitrifying bacteria exist in separate reactors, they can grow in their own optimal operating environment, and can better solve the competition contradiction betwe...

AI Technical Summary

Problems solved by technology

[0003] In view of the above-mentioned technical problems, in order to overcome the waste of a large amount of organic energy in the process of sewage treatment and the lack of renewable green energy, the present invention provides a biofilm denitrification and phosphorus removal power generation device, in which the denitrification The nitrification and phosphorus removal process is a dual-sludge system formed by combining the running anaerobic reactor, aerobic biofilm reactor and anoxic reactor.

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