Sewage treatment device and method based on helotism electrochemical system

Abstract

The invention discloses a sewage treatment device and method based on a helotism electrochemical system. According to the invention, an H-type microbial fuel cell structure is adopted; a cathode chamber and an anode chamber are connected through a proton exchange membrane; an anode electrode is made of a carbon felt material, and an anaerobic microbial membrane is attached to the surface of the anode electrode; a cathode electrode is a titanium-plated ruthenium-iridium mesh electrode, a microalgal biological membrane is attached to the surface of the cathode electrode, and an aerobic biological membrane is attached to a middle filler; and a capacitor is arranged between the cathode and the anode. When microalgal photosynthesis is stopped at night, electric energy stored in daytime is released to drive the device to operate, so continuous and efficient removal of pollutants and effective recovery of microalgae are realized. By coupling the helotismsymbiotic system and the microbial fuelcell, nitrogen, phosphorus and organic matters in the sewage are synchronously removed; the device and the method have the characteristics of low treatment cost, simple operation process and high energy utilization rate, and the defects of time consumption and power consumption of the traditional sewage treatment technology and the problems of low power generation efficiency and poor treatment efficiency of common microbial fuel cells are overcome.

Description

technical field [0001] The invention belongs to the field of water pollution control, and in particular relates to a sewage treatment device and a method thereof based on an algae-bacteria symbiotic electrochemical system. Background technique [0002] For municipal and industrial wastewater treatment, aerobic and anaerobic biological treatment methods are still widely used. The aerobic biological treatment process consumes a lot of energy and has high operating costs; the traditional anaerobic biological treatment process has low operating costs, but the treatment cycle is long and energy recovery is difficult. Microbial fuel cell (MFC) is a device that uses microorganisms as catalysts to oxidize organic and inorganic substances and generate electricity. In recent years, it has shown great application potential in the field of wastewater treatment, mainly as follows: organic waste can be used to generate electricity , less sludge output, high energy conversion efficiency, ...

AI Technical Summary

Problems solved by technology

However, the industrial application of MFC still faces problems such as low power generation, weak buffer capacity, poor processing efficiency, easy polarization of the cathode, and easy contamination of the proton exchange membrane and electrodes.

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