Denitrifying phosphorus removal electricity generation device

Abstract

A denitrifying phosphorus removal electricity generation device belongs to the technical field of sewage treatment, and comprises a water tank, an anaerobic tank, a primary sedimentation tank, an aerobic tank, a secondary sedimentation tank, an anoxic tank and an end sedimentation tank which are connected in sequence, wherein the anaerobic tank is used as an anode chamber of a microbial fuel cell, the secondary sedimentation tank is used as a cathode chamber of the microbial fuel cell, the anode chamber and the cathode chamber are externally connected with a resistance box respectively, the anaerobic tank is spaced from the secondary sedimentation tank through an ion exchange membrane, the primary sedimentation tank is connected with the anoxic tank through an overrunning sludge pipeline, the aerobic tank is connected with the secondary sedimentation tank through a return sludge pipeline, the end sedimentation tank is connected with the anaerobic tank through a return sludge pipeline, an water outlet and a sludge discharging opening are formed in the end sedimentation tank, and electric energy is generated while sewage is treated, so as to realize the coupling of two processes of denitrifying phosphorus removal and the microbial fuel cell. According to the device provided by the invention, the process of denitrifying phosphorus removal is utilized for treating domestic sewage to reduce the concentrations of COD, TP and TN in the sewage, a stable voltage value is generated while a water body is purified, the pollutants in the sewage are effectively treated, and further the electric energy is generated.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a denitrification dephosphorization power generation device, a new process 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 between nitrifying bacteria an...

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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 and the lack of renewable green energy in the process of sewage treatment, the present invention provides a denitrification phosphorus removal power generation device, which is a A new device coupled with denitrification and phosphorus removal process and microbial fuel cell. This device can not only reduce the concentration of COD, TN and TP in sewage to purify sewage, but also use the catalysis of microorganisms to generate electricity

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