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Microbial fuel cell for in-situ remediation of nitrate pollution of underground water

A fuel cell and in-situ remediation technology, applied in the field of groundwater nitrate pollution control, can solve the problems that MFC cannot be used for in-situ remediation of groundwater nitrate pollution, so as to reduce the difficulty of implementation, reduce the cost of treatment, and avoid secondary pollution Effect

Active Publication Date: 2015-06-03
OCEAN UNIV OF CHINA
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Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of existing groundwater nitrate pollution in-situ remediation technology, solve the technical barrier that traditional MFC cannot be used in groundwater nitrate pollution in-situ remediation, and provide an internal self-flowing method for in-situ remediation of groundwater nitrate pollution nested microbial fuel cell

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  • Microbial fuel cell for in-situ remediation of nitrate pollution of underground water

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Embodiment Construction

[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0029] The invention utilizes an internal self-flowing nested microbial fuel cell to restore nitrate pollution in groundwater in situ. The anion exchange membrane is used as the channel for nitrate in groundwater to enter the MFC anode chamber, and at the same time prevents the microorganisms in the MFC from entering the groundwater environment, which can effectively avoid the secondary pollution of the groundwater caused by microorganisms and organic matter; the anaerobic denitrifying bacteria in the cathode chamber are used as catalysts , the nitrate entering the cathode chamber accepts electrons on the biocathode and is reduced to nitrogen to be removed. The specific structure of the microbial fuel cell is as follows:

[0030] refer to Figure 1-2 As shown, a self-flowing nested microbial fuel cell for in-situ restoration of nitr...

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Abstract

The invention discloses a microbial fuel cell for in-situ remediation of nitrate pollution of underground water. The microbial fuel cell is in an integral cylindrical structure and comprises an anode chamber, a cathode chamber, an anion-exchange membrane assembly and an external circuit system, wherein the anode chamber is externally arranged at the outer side of the cathode chamber in a sleeving manner, a water inlet pipe and an exhaust pipe are arranged on the top of the anode chamber, a biological anode is arranged in the anode chamber, anaerobic electricity-generating microorganisms are attached to the biological anode, the anode chamber is filled with an anode liquid and the anode liquid is organic wastewater; a water outlet pipe is arranged on the top of the cathode chamber, a biological cathode is arranged in the cathode chamber, electric active denitrification microorganisms are attached to the biological cathode, the cathode chamber is filled with a cathode liquid, and the cathode chamber is inoculated with efficient anaerobic denitrification microorganisms; the anion-exchange membrane assembly comprises an anion-exchange membrane and a carrying layer; the external circuit system comprises an external circuit, a lead and an electric signal collecting recorder. The microbial fuel cell disclosed by the invention has triple functions of removing organic wastes, generating electricity by the microorganisms and carrying out the in-situ remediation on the nitrate pollution of the underground water, is simple and compact in structure, is economic and efficient, and can continuously and stably operate.

Description

technical field [0001] The invention belongs to the technical field of nitrate pollution control of ground water, relates to a microbial fuel cell, in particular to an internal self-flowing nested microbial fuel cell for in-situ repairing of nitrate pollution in ground water. Background technique [0002] my country's surface water pollution has not been fully curbed, and my country's drinking water sources have been affected. Because groundwater is relatively lightly polluted and has abundant reserves, it has become one of the most important drinking water sources in my country. In recent years, due to the discharge and leakage of industrial wastewater and domestic sewage, the excessive use of chemical fertilizers and pesticides in agricultural production, and the leaching and infiltration of solid waste, groundwater nitrate pollution has become increasingly serious. Drinking nitrate-contaminated groundwater will It poses a threat to human health, causing blue blood and met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/16C02F3/34
CPCC02F3/34H01M8/16Y02E60/50
Inventor 季军远王欢郑西来乔宝刚
Owner OCEAN UNIV OF CHINA
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