Integrated MFC-DMBR coupling device

Abstract

The invention discloses an integrated MFC-DMBR coupling device; a cation exchange membrane is arranged between an anaerobic anode tank and an aerobic cathode tank of the device; the anaerobic anode tank is internally provided with electricity-producing microorganisms, a carbon felt and a stirrer, and the aerobic cathode tank is internally provided with a stainless steel wire mesh; after the device operates for a set time, a dynamic membrane with a solid / liquid separation effect is formed on the stainless steel wire mesh, and effluent filtered by the dynamic membrane flows out from a water outlet pipe; and an aeration head driven by an air pump is arranged in the aeration tank. The device further comprises a PLC, and a positive electrode and a negative electrode of the PLC are electrically connected with the stainless steel wire mesh and the carbon felt respectively. Sewage enters a regulating tank and downwards enters the bottom of the anaerobic anode tank, the sewage in the anaerobic anode tank upwards flows and overflows to the aerobic cathode tank, the sewage in the aerobic cathode tank downwards flows and enters the bottom of the aeration tank, and the sewage in the aeration tank upwards flows and flows back to the aerobic cathode tank under air lifting action of aeration bubbles. The device is high in biodegradability, good in effluent quality and low in energy consumption.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, in particular to an integrated MFC-DMBR coupling device. Background technique [0002] Membrane bioreactor (MBR) has the advantages of good effluent quality, small footprint, and low sludge production. Its engineering application reached its peak between 2009 and 2012, and it once had a tendency to replace the activated sludge process. However, since 2012, the number of MBR engineering applications in the world has declined rapidly, and the number of new applications in the past two years is only about 10% of the peak period. The reason is that high energy consumption and membrane fouling are the main factors that limit the development of MBR. Therefore, effective control of membrane fouling and substantial reduction of energy consumption are still urgent problems to be solved in the field of MBR. [0003] In recent years, some scholars have attempted to introduce dynamic membrane techn...

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Problems solved by technology

[0005] On the basis of organically combining MFC and DMBR, the present invention proposes an integrated MFC-DMBR coupling process device, which can further reduce energy consumption and slow down membrane fouling on the basis of MFC-MBR, and effectively solve the problem of high energy consumption and MBR Membrane fouling problem, it is of great significance to promote its application process

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