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High-efficiency denitrification electricity-production wastewater treatment method

A technology for wastewater treatment and denitrification, which is used in special compound water treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc. and other problems to achieve the effect of improving denitrification efficiency and increasing stability

Active Publication Date: 2019-08-23
INNER MONGOLIA UNIVERSITY
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Problems solved by technology

However, due to the less energy released by the Anammox process, the voltage output is very limited
In addition, 11% of nitrate nitrogen is generated during the ANAMMOX reaction process, which makes it difficult for the total nitrogen in the effluent of the system to reach the standard stably
Although the addition of exogenous organic matter in the ANMMOX system can reduce the concentration of nitrogen in the effluent of the system, it increases the cost of wastewater treatment

Method used

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  • High-efficiency denitrification electricity-production wastewater treatment method
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Embodiment Construction

[0024] The specific implementation manner of the present invention is explained in conjunction with the accompanying drawings, but the implementation and protection of the present invention are not limited thereto. The main device is a double-chamber microbial electrochemical reactor, which includes two independent reaction areas: anaerobic anode reaction chamber (1) and chemical cathode reaction chamber (2); anaerobic anode reaction chamber (2) and chemical cathode reaction chamber ( 3) are fixed with a cation exchange membrane (3) to separate; the anaerobic anode reaction chamber (2) is equipped with an anolyte (4) and an anode (5), and the anolyte (4) is inoculated with anammox sludge, Anaerobic ammonium oxidation sludge is attached to the anaerobic anode (5), the anaerobic anode reaction chamber (2) is provided with a water inlet pipe (6) on the lower side wall, and an outlet pipe (7) is provided on the upper side wall; the chemical cathode reaction chamber ( 3) catholyte ...

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Abstract

The invention discloses a high-efficiency denitrification electricity-production wastewater treatment method. The method is based on an anodic extremely high-efficiency denitrification microbial fuelcell coupled with the anaerobic ammonium oxidation technology, the microbial fuel cell comprises a conventional dual-chamber microbial fuel cell, a magnetic stirring system, an external circuit and adata acquisition system. The intermittent operation of the microbial fuel cell is carried out, after the completion of the consumption of an inorganic substrate, a certain amount of an organic substance is added to stimulate the sludge hydrolysis acidification and the heterotrophic electricity-production bacteria activity, the apparatus has a simple structure, the microbial fuel cell has remarkable denitrification effect compared with the conventional anode anaerobic ammonium oxidation MFC, the nitrogen load is significantly improved, and the electricity-production effect is good.

Description

[0001] Technical field: The present invention relates to a treatment method for high-efficiency denitrification and electricity generation wastewater. [0002] Background technique: [0003] Energy shortage and environmental pollution restrict the sustainable development of human society. Microbial fuel cell (MFC) technology uses anodic electricity-producing microorganisms as catalysts to directly convert chemical energy stored in pollutants into electrical energy through biodegradation, and has two functions of energy generation and pollution control. Anaerobic ammonium oxidation (ANAMMOX) technology, which can directly convert ammonia nitrogen and nitrous nitrogen into nitrogen gas under anaerobic conditions, is by far the most cost-effective denitrification process. The combination of anaerobic ammonium oxidation and MFC technology can realize simultaneous denitrification and power generation, which is a research hotspot in the field of energy and environment. [0004] The ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/00C02F3/28H01M8/16C02F101/16
CPCC02F3/005C02F3/2866H01M8/16C02F2101/16C02F2101/166C02F2305/06Y02E60/50Y02P70/50
Inventor 付志敏孔志远章院灿
Owner INNER MONGOLIA UNIVERSITY
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