Microbial fuel cell by taking conducting film aerating bio-film reactor as cathode

Abstract

The invention discloses a microbial fuel cell by taking a conducting film aerating bio-film reactor as a cathode. The microbial fuel cell comprises a reactor, wherein a partition membrane 5 is arranged in the middle of the reactor to divide the reactor into an anode chamber 1 and a cathode chamber 3; an anode 2 is arranged in the anode chamber and a cathode 4 is arranged in the cathode chamber; two ends of an external circuit 6 are respectively connected with the anode and the cathode; water inlets 7 and 9 are respectively formed in the lower parts of the walls of the anode and cathode chambers and water outlets 8 and 10 are respectively formed in the upper parts of walls of the anode and cathode chambers; the cathode is the conducting film aerating bio-film reactor which is sequentially connected with a gas flow flowmeter 11 and a gas pump 12 by virtue of pipelines. According to the fuel cell disclosed by the invention, not only is the electric energy generated by microorganisms utilized, but also the denitrification process in the conducting film aerating bio-film reactor is promoted, so that the removal effect of nitrogen is remarkably improved. By using a hollow fiber membrane or a tubular membrane as a biological attachment carrier, as the specific surface area of the carrier is great, the bio-film culturing speed is great, so that formation of the bio-film is facilitated.

Description

technical field [0001] The invention belongs to the field of water treatment, and in particular relates to a microbial fuel cell using a conductive membrane aerated biofilm reactor as a cathode. technical background [0002] With the rapid development of my country's economy, a large amount of sewage containing nitrogenous organic matter is discharged into the water body, resulting in eutrophication of the water body, and the quality of the water body deteriorates sharply. The increasingly serious nitrogen pollution makes the denitrification problem of sewage urgently need to be solved. However, the traditional biological denitrification technology generally has the disadvantages of long process flow, large floor area, and high operating cost. Therefore, developing a new type of high-efficiency denitrification technology has become a hot spot in the field of water treatment. [0003] Membrane aerated biofilm reactor (MABR) is a new sewage treatment process produced by comb...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of the existing low-carbon-nitrogen ratio wastewater biological denitrification technology, which is complex in management and high in operating costs, and to provide a method that can treat high-ammonia-nitrogen wastewater with high efficiency and low consumption, using a conductive membrane aerated biofilm reactor as the cathode Microbial fuel cell

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