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Device and method for simultaneously degrading phenol and ammonia nitrogen using microbial fuel cells

A technology of fuel cells and microorganisms, applied in biochemical fuel cells, chemical instruments and methods, biological water/sewage treatment, etc., can solve problems such as limited applications, and achieve the effects of improving utilization and saving energy

Active Publication Date: 2016-04-13
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It is reported that there are many types of bacteria that degrade phenol and ammonia nitrogen, but because phenol has a strong inhibitory effect on methanogens, the application of anaerobic method is limited.

Method used

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  • Device and method for simultaneously degrading phenol and ammonia nitrogen using microbial fuel cells
  • Device and method for simultaneously degrading phenol and ammonia nitrogen using microbial fuel cells
  • Device and method for simultaneously degrading phenol and ammonia nitrogen using microbial fuel cells

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Embodiment 1

[0027] A device for simultaneously degrading phenol and ammonia nitrogen using a microbial fuel cell in this embodiment is composed of an anode chamber 1 and a cathode chamber 2, the anode chamber and the cathode chamber are separated by an anion exchange membrane 3, and the anode chamber is provided with a battery anode liquid inlet 4 and the anode electrode 5, the cathode chamber is provided with the cathode liquid inlet 6, the aeration device 7 and the cathode electrode 8, the anode electrode and the cathode electrode are connected through an external circuit 9, and the external circuit is provided with a load resistor 10 and a circuit switch 11.

[0028] The device of this embodiment is used to remove and recover ammonia nitrogen in sewage. The specific steps are: inoculate the anode chamber with acclimated electricity-producing mixed bacteria liquid and denitrifying bacteria, add sodium acetate as an electron donor, and use 0.1molL -1The mixture of pH 7.0 phosphate buffer ...

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Abstract

The invention belongs to the technical field of wastewater treatment and discloses a device and method for degrading phenol and ammonia nitrogen simultaneously by virtue of a microbial fuel cell. The method comprises the following steps: by building a double-chamber microbial fuel cell system, inoculating domesticated electricity-producing mixed bacterial liquid and denitrifying bacteria to an anode chamber, adding sodium acetate as an electron donor, taking mixed liquid of a phosphate buffer solution of 0.1mol / L with pH value of 7.0 and culture liquid as nutritional substances, and meanwhile, providing a relatively strict anaerobic environment; adding phenol and ammonia nitrogen-containing wastewater and mixed sludge taking the nitrifying bacteria domesticated through ammonia nitrogen and phenol, and phenol degradation bacteria as main components into a cathode chamber, filling air through an aeration device, and connecting a closed circuit switch with an external circuit to start the microbial fuel cell so as to degrade ammonia nitrogen and phenol in the cathode chamber simultaneously. The device and the method are used for removing phenol and ammonia nitrogen in the wastewater, and have good economic and environment-friendly benefits.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a device and method for simultaneously degrading phenol and ammonia nitrogen by using a microbial fuel cell. Background technique [0002] The increasingly serious problem of environmental pollution and the search for new energy sources are two fundamental problems facing human beings on the road of sustainable development. With the development of economy, waste disposal has become an important problem. Among them, industrial wastewater has complex components, strong toxicity, and bad impact on the environment, making it extremely difficult to treat. Industrial wastewater such as coking, petrochemical, synthetic ammonia and pharmaceutical wastewater contains a large amount of pollutants such as phenol and ammonia nitrogen. The U.S. Department of Environmental Protection lists phenol as a priority pollutant. Phenol is corrosive and toxic. When the concentrat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/16C02F3/34C02F3/30
CPCY02E60/50
Inventor 冯春华杨晓双黄丽巧吕志盛余辉韦朝海
Owner SOUTH CHINA UNIV OF TECH
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