Microbe fuel cell inoculation and acclimation starting method for energizing organic waste water

A technology of organic wastewater and fuel cells, applied in biochemical fuel cells, chemical instruments and methods, biological water/sewage treatment, etc., can solve problems affecting the application of microbial fuel cell technology, enrichment and acclimation time of electrogenic bacteria, and too long start-up time and other problems, to achieve the effect of stable domestication process, easy implementation, and low cost of use

Inactive Publication Date: 2010-03-10
NANKAI UNIV
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Problems solved by technology

[0004] In recent years, microbial fuel cell technology has made great progress, but in the operation experiment of treating organic wastewater and generating electricity, various problems are still faced in the selection of strains and operation, such as too long start-up time, that is, the enrichment of electrogenic bacteria and long domestication time, poor power generation effect, etc., these problems will affect the application of microbial fuel cell technology in the pilot test and future productive experiments

Method used

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  • Microbe fuel cell inoculation and acclimation starting method for energizing organic waste water
  • Microbe fuel cell inoculation and acclimation starting method for energizing organic waste water

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Use microbial fuel cells to treat domestic sewage and recover electrical energy.

[0037] 1) For the preparation of mixed strains, take the soil supernatant, add 1g / L sodium acetate solution to the soil supernatant according to the volume ratio of 10%, and put it in an anaerobic incubator for storage for later use;

[0038] 2) Select a microbial fuel cell with an effective volume of the anode and cathode reaction chambers of 200ml and a distance between the cathode and anode of 5cm;

[0039] 3) Inject 1g / L sodium acetate solution and 150ml and 50ml of the mixed strain solution prepared in step 1) into the anode, and add N, P, and K elements, and the concentrations are 80mg / L, 5000mg / L and 3000mg respectively / L, inject 200ml of 100mg / L sodium nitrate solution into the cathode;

[0040] 4) The 1000Ω resistor is connected to the external circuit, and the wire and monitoring equipment are connected;

[0041] 5) Place it at room temperature until the voltage starts to sta...

Embodiment 2

[0044] The difference from Example 1 is that the treated wastewater is soy sauce brewing wastewater, and volatile gases are regularly discharged during operation.

[0045] 1) For the preparation of mixed strains, take the soil supernatant, add 1g / L sodium acetate solution to the soil supernatant according to the volume ratio of 10%, and put it in an anaerobic incubator for storage for later use;

[0046] 2) Select a microbial fuel cell with an effective volume of the anode and cathode reaction chambers of 200ml and a distance between the cathode and anode of 5cm;

[0047] 3) Inject 1g / L sodium acetate solution and 150ml and 50ml of the mixed strain solution prepared in step 1) into the anode, and add N, P, and K elements, and the concentrations are 80mg / L, 5000mg / L and 3000mg respectively / L, inject 200ml of 100mg / L sodium nitrate solution into the cathode;

[0048] 4) The 1000Ω resistor is connected to the external circuit, and the wire and monitoring equipment are connected...

Embodiment 3

[0052] The difference from Examples 1 and 2 is that the electrogenic bacteria used are collected from activated sludge of a wastewater treatment plant.

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Abstract

The invention relates to energy processing of organic waste water, in particular to a microbe fuel cell inoculation and acclimation starting method for energizing organic waste water, aiming at recovering chemical energy in the organic pollutant in the form of electric energy. Firstly, mixed strains are inoculated in an anode chamber, and the culture condition is adjusted; after the voltage outputpeak value is stable in each operational period, waste water to be processed is added into the anode chamber after inoculation; a small amount of waste water to be processed is added during the firstoperational period on the premise of avoiding influencing the voltage output stability; the proportion of waste water to be processed is gradually increased during the subsequent period until the waste water to be processed is used completely to finish the microbe fuel cell acclimation. The invention has strong operability, step-by-step acclimation process and stable effect.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a microbial fuel cell inoculation and domestication start-up method for treating high-concentration organic wastewater, such as can be used to treat high-concentration organic wastewater similar to sauce brewing wastewater, and can also be used to treat domestic sewage. Background technique [0002] The advancement of science and technology promotes the rapid development of social economy and facilitates people's modern life, but this rapid development is at the cost of energy consumption and environmental pollution. Energy is an important resource for the survival and development of human beings. Traditional energy sources are increasingly depleted, and the contradiction between energy supply and demand is becoming more and more obvious. The massive consumption of non-renewable fossil fuels pollutes the environment, and the cost of environmental pollution is becoming increasingly ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/16C02F3/34
CPCY02E60/527Y02E60/50
Inventor 李凤祥周启星李白崑
Owner NANKAI UNIV
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