Bioelectrochemical film reactor device

Abstract

The invention discloses a bioelectrochemical film reactor device which comprises an anode chamber, a cathode chamber, an ion selective permeating film, a conductive separating film and an outer resistor, wherein a water inlet pipe and a water outlet pipe are arranged on the anode chamber; graphite grains are filled in the anode chamber; electrogenic microorganisms are adhered to and grow on the surface of the graphite grains; the anode chamber is provided with graphite rod electrodes; the cathode chamber is sleeved outside the anode chamber; an aerating device is arranged at the bottom of thecathode chamber and is used for supplying oxygen to aerobic microorganisms; the ion selective permeating film is sleeved outside the anode chamber; the conductive separating film is sleeved outside the anode chamber; a clearance is kept between the conductive separating film and the anode chamber; and the outer resistor is serially connected to the graphite rod electrodes and the conductive separating film. In the bioelectrochemical film reactor device, a conductive film separating material is endowed with a double function of film filtration and cathode, and organic matters in wastewater arepartly degraded by anode microorganisms and are converted into electric energy and then are degraded again after entering into the cathode chamber, thereby realizing the wastewater treatment while recycling the electric energy from the process. The bioelectrochemical film reactor device has the advantages of an MBR (Membrane Bioreactor) and an MFC (Microbial fuel cell) and overcomes the defects of the MFC of low biomass and low quality of discharged water.

Description

technical field [0001] The invention relates to the technical field of membrane bioreactors in wastewater biological treatment, in particular to a bioelectrochemical membrane reactor device. Background technique [0002] Membrane bioreactors (MBRs) are a new type of high-efficiency sewage treatment and reuse technology that organically combines membrane separation technology and traditional biological treatment technology. The advantages have been developed rapidly in recent decades, but there are still some factors restricting the large-scale application of membrane bioreactors, such as high cost of membrane modules, serious membrane fouling problems and high aeration energy consumption. The use of coarse mesh materials to replace microfiltration / ultrafiltration membranes to achieve mud-water separation can effectively reduce the cost of MBR, slow down membrane fouling, and improve the feasibility of MBR applications. At present, the main coarse mesh substrates used in MBR...

AI Technical Summary

Problems solved by technology

[0004] How to ensure that the sewage can be treated while recovering electric energy from it, and can partially offset the aeration energy consumption of MBR, and overcome the shortcomings of low biomass and poor effluent quality of MFC, has become an important technical problem to be solved urgently by those skilled in the art.

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