Bioelectrode and application thereof in constructed wetlands

A bio-electrode and cathode technology, applied in biological water/sewage treatment, electrochemical-biological combined treatment, water pollutants, etc. Effect

Pending Publication Date: 2020-07-17
BEIJING SEN MIAO TIAN CHENG ENVIRONMENTAL PROTECTION TECH
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  • Bioelectrode and application thereof in constructed wetlands

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[0030] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by those skilled in the art to which the present invention belongs. "First", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Comprising" or "comprising" and similar words mean that the elements or items appearing before the word include the elements or items listed after the word and their equivalents, without excluding other elements or items. Words such as "connected" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "Down", "Left", "Right" and so on are only used to indicate the relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may also change acc...

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Abstract

The invention discloses a bioelectrode and application of the bioelectrode in an artificial wetland. The bioelectrode comprises a pipe body; a negative pole; a positive pole; an argil basin, which isarranged at the upper end of the pipe body, wherein the negative pole extends into the argil basin, and the positive pole bypasses the argil basin and extends into the pipe body; and a protective cover, which is arranged at the upper end of the pipe body and is positioned above the argil basin. According to the bioelectrode, a distance between the positive pole and the negative pole is shortened;the argil basin is arranged between the positive pole and the negative pole and serves as an interlayer, and the advantage of oxidation-reduction potential gradient is improved while an inner circuitis allowed to be in an on state; and long-term efficient degradation of organic matters in an anaerobic zone of the positive pole is achieved by reducing the internal resistance of a microbial fuel cell. When the bioelectrode is used for constructed wetland sewage treatment, the surface load of COD can be improved by 30% or more.

Description

technical field [0001] The invention relates to a biological electrode and its application in artificial wetlands. Background technique [0002] Constructed wetland is an ecological sewage treatment system that simulates the principle of natural wetland, artificially constructed and controlled operation. Through the synergistic effect of wetland plants, artificial fillers and microorganisms attached to the surface, the sewage is purified, and the main pollutants COD, ammonia nitrogen, total phosphorus, etc. The removal rate can reach more than 98%, and it also has a good removal effect on trace organic matter, sulfate, heavy metals and other pollutants. At the same time, it has the advantages of low operating cost and simple operation and maintenance. However, the removal of organic matter in constructed wetlands is mainly achieved through the microbial oxidation reaction in the upper aerobic zone of the wetland, while the decomposition of organic matter in the lower anaerob...

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Application Information

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IPC IPC(8): C02F3/00C02F3/30C02F101/30
CPCC02F3/005C02F3/30C02F2101/30
Inventor 禹宙时光寨白洁
Owner BEIJING SEN MIAO TIAN CHENG ENVIRONMENTAL PROTECTION TECH
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