A cavitation-microbial fuel cell reactor and its method for treating wastewater

A fuel cell and reactor technology, which is applied in the fields of biochemical fuel cells, chemical instruments and methods, biological water/sewage treatment, etc., can solve the problems of low electron transfer efficiency of producing point bacteria, toxic price of intermediaries, and low redox rate. , to achieve the effect of easy replacement and maintenance, reasonable distribution of water intake, and increased contact reaction area

Active Publication Date: 2018-12-14
扬州市泽惠环境工程有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

[0005] At this stage, microbial fuel cells have the following disadvantages: the electron transfer efficiency of point-of-production bacteria is low, and additional electron mediators are needed to enhance electron transfer. However, its oxidation-reduction rate is low, and heavy metal catalysts need to be loaded on the cathode; the electricity generation substrate is organic matter, the conductivity is low, the internal resistance of the battery is large, and the electricity generation efficiency is low.

Method used

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  • A cavitation-microbial fuel cell reactor and its method for treating wastewater

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Effect test

Embodiment 1

[0029] Such as figure 1 A cavitation-microbial fuel cell reactor includes a reactor body 1, a raw water tank 2, a water inlet pump 3, a cavitation generator 4, a microbial fuel cell assembly 5, a water inlet 6, a water distribution partition 7, Water outlet 8; it is characterized in that: the raw water tank 2 is connected to the water inlet 6 of the reactor body 1 through the water inlet pump 3, and the water inlet 6 is arranged at the lower part of the reactor body 1, and it is arranged as a plurality of vertically perpendicular to the reactor body 1 and through multiple sets of vertical pipes 9 corresponding to the through holes 10 on the water distribution baffle 7, wherein the multiple sets of vertical pipes 9 have the same number of through holes as the water distribution baffle and are arranged coaxially , a cavitation generator 4 is arranged at 9 mouths of each vertical pipeline, and the aperture of the water outlet of the cavitation generator 4 is set larger than the a...

Embodiment 2

[0031] It is basically the same as that of Example 1, except that the distance between each group of cathode plates 11 and anode plates 12 is 11 cm; the anode plates 12 are deposited with anthraquinone-2,6-sodium disulfonate, The aperture of the through hole 10 of the water distribution partition is 1 cm, and the aperture of the water outlet of the cavitation generator 4 is 3 cm; the vertical distance between the water distribution partition 7 and the cathode plate 11 and the anode plate 12 is 25 cm.

Embodiment 3

[0033] The wastewater to be treated is printing and dyeing wastewater, and its influent ammonia nitrogen NH 4 + The -N content is 300mg / L, the carbon-to-nitrogen ratio C / N is 5:1, and the reaction temperature is 28°C. The waste water to be treated enters the bottom of the cavitation-microbial fuel cell reactor from the raw water tank through the inlet pump, and is acted by multiple sets of cavitation generators at the bottom to increase the transfer of electrons in the waste water, and then the waste water is removed by the action of the upper microbial fuel cell. The organic matter in the sewage, after the treatment, the waste water overflows through the overflow weir above. In the main reaction zone, the DO value of dissolved oxygen in wastewater is 1.0mg / L. The COD removal rate of the treated wastewater is 96.3%, and the removal rate of total nitrogen is greater than 97.5%.

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Abstract

The invention relates to a cavitation-microbiological fuel cell reactor and a method thereof for processing wastewater. The reactor comprises a reactor body (1), a raw water tank (2), a water inlet pump (3), cavitation generators (4), a microbiological fuel cell assembly (5), a water inlet (6), a water distribution clapboard (7) and a water outlet (8), wherein wastewater to be processed enters the bottom of the cavitation-microbiological fuel cell reactor from the raw water tank through the water inlet pump, the transferring of electrons in the wastewater is increased through the action of multiple groups of cavitation generators arranged on the bottom, then, the wastewater is subjected to the action of the upper microbiological fuel cell to remove organic matters in sewage, the COD (Chemical Oxygen Demand) removal rate of the processed wastewater is higher than 94.5%, and the removal rate of total nitrogen is higher than 95.3%.

Description

【Technical field】 [0001] The invention belongs to the technical field of microbial fuel cells, in particular to a cavitation-microbial fuel cell reactor and a method for treating waste water. 【Background technique】 [0002] With the rapid growth of the global economy, the pressure of energy shortage and environmental pollution has increased sharply, posing a serious threat to the sustainable development of human society. Microbial fuel cells can use microorganisms as catalysts to directly convert chemical energy into electrical energy. It is a new clean energy production technology and has become a research hotspot in the field of energy and environment. [0003] Microbial Fuel Cells (MFCs) is a technology that uses microorganisms as catalysts to convert pollutants in the environment into electrical energy. This innovative technology, which combines environmental pollution control and waste energy utilization, has been applied to the degradation research of various pollutan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/36C02F3/34H01M8/16C02F103/32
CPCC02F1/36C02F3/341C02F2103/325H01M8/16Y02E60/50
Inventor 吴超
Owner 扬州市泽惠环境工程有限公司
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