Anaerobic-aerobic integrated microbial fuel cell wastewater treatment system

Abstract

The invention relates to an anaerobic-aerobic integrated microbial fuel cell wastewater treatment system. Facultative power-generating bacteria and facultative degrading bacteria are constructed in an anode chamber of a microbial fuel cell and the alternate anaerobic-aerobic operation mode is adopted, thus the aim of utilizing the anaerobic power generation of the organic matter and realizing aerobic degradation can be achieved. By adopting the system, the problem that when the past microbial fuel cell system utilizes organic wastewater to generate power, the degradation of the organic matter is not complete, can be overcome and the resource utilization and harmless emission of organic wastewater can be realized. The system has the following specific characteristics: the fuel cell system comprises a cathode chamber, the anode chamber, an anode in the anode chamber, a cathode in the cathode chamber, a diaphragm between the cathode and the anode and aeration headers arranged in the cathode chamber and the anode chamber; the facultative power-generating microorganisms are attached to the anode of the anode chamber, the facultative degrading microorganisms exist in the solution of the anode chamber; and the alternate anaerobic-aerobic operation mode is adopted to realize wastewater power generation under the anaerobic condition and the rapid degradation of the organic matter under the aerobic condition.

Description

Technical field [0001] The invention relates to an anaerobic-aerobic integrated microbial fuel cell wastewater treatment system, which belongs to the field of environmental protection and resource integration-water pollution prevention and control. Background of the invention [0002] In recent years, with the development of the global energy crisis and the advancement of fuel cell technology, the use of electrochemically active microorganisms (electricity-producing microorganisms) for pollution control and energy recovery has increasingly attracted the attention of researchers at home and abroad (Rabaey et al., 2005 ; Logan et al., 2006; Lovley, 2006). The typical characteristic of electrochemically active microorganisms is that they can metabolize organic matter while transferring electrons from the inside to the outside of the cell, and recover electrical energy by forming a closed circuit with the help of electrodes and wires. Microbial fuel cell (MFC) is currently the ...

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Problems solved by technology

Invention patent (CN1364146A) proposes a biofuel cell using wastewater and activated sludge for wastewater treatment. It uses a double-chamber fuel cell and uses septic tank wastewater and livestock and poultry breeding wastewater to generate electricity, but the electricity generated The final wastewater COD concentration is still 250-350mg / l, which needs further treatment

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