Sewage treatment method for purifying refractory organic pollutants

A sewage treatment method and technology for organic pollutants, applied in the field of environmental engineering, can solve problems such as restricting development, and achieve the effects of reducing treatment costs, improving the biodegradability of materials, and enhancing power generation performance

Inactive Publication Date: 2016-01-13
SOUTHEAST UNIV
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Problems solved by technology

Although CWMFC has shown good power generation performance when dealing with easily degradable organic matter, the simultaneous power generation of refractory organic matter is still a bottleneck restricting its development, and the utilization of the tiny electric energy output by MFC has become a research hotspot and difficulty.

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  • Sewage treatment method for purifying refractory organic pollutants

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Embodiment Construction

[0014] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:

[0015] Such as figure 1 The shown biofilm electrode reactor combined microbial fuel cell sewage treatment system for purifying refractory organic pollutants includes a biofilm reactor (BER) unit and a constructed wetland microbial fuel cell (CWMFC) unit. The sewage is firstly treated by the BER unit to degrade the refractory organic matter in the sewage, and the purpose of uniform water quality is achieved under the action of the agitator, and then flows into the CWMFC unit through the connecting water pipe between the systems, so that the organic matter in the sewage can be fully degraded, and at the same time The CWMFC unit generates electric energy; the electric energy generated by the CWMFC unit is transmitted to the BER unit through the wire connecting the BER unit and the CWMFC unit to supply power for the BER unit, so that the electric energy gen...

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Abstract

The invention relates to a sewage treatment method for purifying refractory organic pollutants. The method comprises the steps: firstly treating refractory organic substances in sewage by a biofilm-electrode reactor method; then, degrading organic substances in the sewage by microbial fuel cells, and meanwhile, generating electric energy; and enabling the electric energy generated by the microbial fuel cells to serve as a power supply for the biofilm-electrode reactor method. According to the sewage treatment method, the generation and demand of the electric energy serve as a link so as to realize the effective coupling of a reaction process and reaction types in a system, and thus the aim of efficiently removing the refractory organic substances is achieved. Thus, the sewage treatment method provides an effective way for easing current energy crisis and solving environmental problems and has immeasurable application and development potential.

Description

technical field [0001] The invention belongs to the field of environmental engineering, and in particular relates to a sewage treatment method for purifying refractory organic pollutants. Background technique [0002] Biofilm Electrode (BER) is a water treatment method for electrochemically coupling microorganisms. The biofilm electrode method fixes microorganisms on the electrode to form a biofilm, and under the action of a small direct current, the pollutants are degraded under the dual effects of electrochemical and microorganisms. In 1992, R.B.Mellor first proposed the concept of "biofilm electrode" in the journal Nature. They immobilized denitrifying enzymes on the surface of the cathode to make a biofilm electrode. The electrode effectively provided the reducing capacity for the immobilized enzyme. Hydrogen atoms are generated and utilized by immobilized denitrase to complete denitrification. Over the next ten years, experts at home and abroad have done a lot of rese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F3/32
Inventor 李先宁宋海亮吴磊曹羡刘慎坦
Owner SOUTHEAST UNIV
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