Microbial fuel cell with separation membrane and biological negative pole, and sewage treatment method

Abstract

A microbial fuel cell with a separation membrane and a biological negative pole and a sewage treatment method belong to the technical field of sewage treatment and reclamation. The microbial fuel cell is characterized in that a reaction tank is divided into an anaerobic area and an aerobic area; a positive pole is arranged in the anaerobic area, current-producing bacteria on the surface of the positive pole decompose organic pollutants and transmit electrons to the positive pole; membrane component type negative poles wraps a framework by a stainless steel cloth and are arranged in the aerobic area; the membrane is formed on the stainless steel cloth which is domesticated, aerobic nitrifying bacteria are on the outer layer of the biological membrane, and anaerobic denitrifying bacteria on the inner layer of the biological membrane can obtain directly the electrons transmitted by the positive pole from an electrode to carry out denitrification. The sewage flows through the anaerobic area and the aerobic area in sequence, is filtered by the membrane component type negative poles, then enters a cavity of a membrane component, and pumps to discharge water. The benefits of the invention are as follows: the number of the membrane component type negative poles is adjustable, the area filtered by the biological negative pole and the membrane is flexibly changed, in addition, the decarburization and denitrification can be carried out synchronously on the swage with low consumption and high efficiency, the quality of the discharged water is guaranteed by the membrane which filters the discharged water, and meanwhile, chemical energy is extracted from the pollutants to form electricity which is then output.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering, and relates to sewage treatment and reclaimed water reuse technology, in particular to a sewage treatment method for synchronous decarbonization and denitrification using a biocathode microbial fuel cell to generate electricity and completing membrane filtration. Background technique [0002] As the world's population and economies continue to grow, so do the environmental concerns posed by energy use. Developing new types of energy characterized by low-carbon energy and gradually replacing traditional energy sources is an important way to solve the problems of fossil energy shortage and environmental pollution. Biomass energy is the energy form of solar energy stored in biomass in the form of chemical energy, and it is a new energy source with extensive use value. Microbial fuel cell technology regards wastewater as the carrier of energy and resources, uses organic pollutants ...

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Problems solved by technology

[0005] my country is facing the dual pressure of water shortage and serious water pollution. Reuse of reclaimed water is one of the effective means to solve this problem. Membrane bioreactor covers a small area and has good effluent quality. It integrates activated sludge degradation and membrane filtration An integrated high-efficiency sewage recycling technology, but membrane fouling and high membrane costs limit its application and development

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