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Microbiological fuel cell-based pig farm wastewater treatment method

A technology for fuel cells and pig farm wastewater, applied in biochemical fuel cells, fuel cells, water/sewage multi-stage treatment, etc., can solve the problems of high cost, geographical and pig farm scale limitations, and troublesome management by special personnel.

Active Publication Date: 2015-10-21
NANTONG UNIVERSITY
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Problems solved by technology

Wastewater returning technology can maximize the control of pollutants, improve soil fertility, and consume less energy, but it requires special personnel to manage it. There are certain restrictions on the area and the scale of the pig farm; the factory treatment technology is mainly divided into biological treatment, chemical treatment and physical treatment, and the relative cost is relatively high

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  • Microbiological fuel cell-based pig farm wastewater treatment method

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Embodiment Construction

[0029] Below in conjunction with specific embodiment, the pig farm waste water treatment method based on microbial fuel cell of invention is described further:

[0030] The first step, waste water collection: collect the waste water from the pig farm in the septic tank, and the septic tank is set on both sides of the pig house. At this time, the wastewater quality COD=19000±500mg / L, BOD=9100±450mg / L, SS= 13000±600mg / L, NH3-N=1250±50mg / L.

[0031] The size of the septic tank is 50m×3m×2.7m, and the volume is 800m 3 , effective volume 630m 3 .

[0032] The second step is to remove impurities from wastewater: SGH mechanical grille is used to remove impurities from wastewater, and the flow rate of wastewater is 12m 3 / h, after removing the large particles of pollutants and floating objects in the wastewater by the mechanical grid, the water quality of the wastewater is COD=11000 mg / L, BOD=5500mg / L, SS=5500mg / L, NH3-N=1000mg / L.

[0033] The third step, aeration treatment: colle...

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Abstract

The invention relates to a microbiological fuel cell-based pig farm wastewater treatment method. The method comprises the following steps: large-granule pollution substances and floaters in sewage are removed by using a mechanical grid; an equalizing tank adjusts the water volume and the water quality uniformization; a hydrolysis-acidification tank hydrolyzes organic matters; an anaerobic tank hydrolyzes the organic matters to improve the biodegradability of wastewater and maintain the anaerobic state of the wastewater; wastewater treatment and electric energy generation are carried out in a microbiological fuel cell; and an electric energy collecting system collects electric energy, and provides the electric energy for a water quality detection system for monitoring the treatment condition of wastewater in the microbiological fuel cell. The method combines the microbiological fuel cell with a traditional wastewater treatment technology, so the method can be applied in treatment of pig farm wastewater to recover the electric energy and realize wastewater treatment.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to a pig farm wastewater treatment method based on microbial fuel cells. Background technique [0002] In recent years, the pig farm wastewater produced by large-scale pig farm breeding has affected the surrounding ecology and atmospheric environment. Pig farm wastewater is high-concentration organic wastewater, which will not only pollute groundwater sources and surface water, but may also cause the land to lose its productive capacity, resulting in no green grass growing in some areas, dry trees, and even the possibility of spreading diseases, causing serious damage to human health. harm. [0003] In order to improve the pig farm environment and its negative impact, many technologies and methods have been used to treat pig farm wastewater, which are mainly divided into three categories: wastewater returning to the field technology, natural treatment technology and factory trea...

Claims

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Application Information

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IPC IPC(8): C02F9/14H01M8/16H01M8/06
CPCY02E60/50
Inventor 倪红军陈青青马骏汪兴兴黄明宇朱昱李志扬裴一
Owner NANTONG UNIVERSITY
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