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Method for treating furan-containing wastewater with air cathode single-chamber microbial fuel cell

An air cathode and fuel cell technology, which is applied in biochemical fuel cells, biological water/sewage treatment, electrochemical-biological combination treatment, etc., can solve the problems of long degradation cycle, high difficulty, and high cost of controlling miscellaneous bacteria, and achieve no secondary Pollution, mild conditions, great effect in solving refractory pollution

Inactive Publication Date: 2019-05-28
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the degradation cycle is long, and the cost of isolating high-efficiency bacteria and maintaining the purity of the bacteria to control miscellaneous bacteria is high and difficult.

Method used

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  • Method for treating furan-containing wastewater with air cathode single-chamber microbial fuel cell

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Embodiment 1

[0018] A method for treating furan-containing wastewater with an air cathode single-chamber microbial fuel cell, comprising the steps of:

[0019] 1) Prepare the air cathode single-chamber microbial fuel cell, see figure 1 , the battery includes a reactor 1, an anode 2 is arranged inside the reactor, an air cathode 3 is arranged on one side wall of the reactor, and the two ends of the resistor 6 are respectively connected to the anode and the air cathode by wires, in the reactor The lower part of the side wall is provided with a water inlet 4, and the upper part of the reactor side wall is provided with a water outlet 5; a carbon felt material layer is provided on the outer surface of the anode;

[0020] 2) Take the sewage in the secondary sedimentation tank of the sewage treatment plant, and let it stand at 2°C for 0.8h; take the supernatant;

[0021] 3) Prepare 2g / L sodium acetate solution with PBS solution with pH=7 as solvent, and then add brewer’s yeast powder to make th...

Embodiment 2

[0026] A method for treating furan-containing wastewater with an air cathode single-chamber microbial fuel cell, comprising the steps of:

[0027] 1) with embodiment 1 step 1);

[0028] 2) Take the sewage in the secondary sedimentation tank of the sewage treatment plant, let it stand at 1°C for 1 hour; take the supernatant;

[0029] 3) Prepare 2g / L sodium acetate solution with PBS solution with pH=6.5 as solvent, and then add brewer’s yeast powder to make the concentration 0.5g / L, which is the battery culture solution;

[0030] 4) According to the volume ratio of 1:1.5, mix the supernatant obtained in step 2) with the battery culture solution, put it into the reactor 1, cultivate it for 3 days, open the water outlet 5, and release the liquid in the reactor ;

[0031] 5) Add 100 mg / L carbofuran-containing wastewater into the reactor, adjust the pH to 7.5, and perform anaerobic degradation at room temperature for 175 hours.

[0032] Experimental results show that using the me...

Embodiment 3

[0034] A method for treating furan-containing wastewater with an air cathode single-chamber microbial fuel cell, comprising the steps of:

[0035] 1) with embodiment 1 step 1);

[0036] 2) Take the sewage in the secondary sedimentation tank of the sewage treatment plant, and let it stand at 4°C for 0.5h; take the supernatant;

[0037] 3) Prepare 2g / L sodium acetate solution with PBS solution with pH=7.5 as solvent, and then add brewer’s yeast powder to make the concentration 0.5g / L, which is the battery culture solution;

[0038] 4) According to the volume ratio of 1:1.5, mix the supernatant obtained in step 2) with the battery culture solution, put it into the reactor 1, cultivate it for 2 days, open the water outlet 5, and release the liquid in the reactor ;

[0039] 5) Add carbofuran-containing wastewater into the reactor, adjust pH=7, and perform anaerobic degradation at room temperature for 268 hours.

[0040] Experimental results show that using the method of the pres...

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Abstract

The invention discloses a method for treating furan-containing wastewater by an air cathode single-chamber microbial fuel cell. The method comprises the steps of (1) preparing the air cathode single-chamber microbial fuel cell; (2) taking sewage in a secondary sedimentation pool of a sewage treatment plant; performing still standing for 0.5 to 1h at 1 to 4 DEG C; taking supernate; (3) preparing a 2g / L sodium acetate solution by using a PBS (poly butylenes succinate) solution as a solvent; then adding beer yeast powder to form a cell culture solution; (4) mixing the supernate and the cell culture solution; putting the mixture into a reactor for culture; opening a water outlet; discharging out liquid in the reactor; (5) adding the furan-containing wastewater into the reactor; regulating the pH; performing anaerobic degradation under the room temperature condition. Experimental results show that after the method is used, the carbofuran removal rate reaches 92.35 percent or higher.

Description

technical field [0001] The invention belongs to the field of wastewater biological treatment, and relates to a method for treating furan-containing wastewater with an air cathode single-chamber microbial fuel cell. Background technique [0002] Among all kinds of industrial wastewater treatment processes, the most difficult wastewater is pesticide wastewater. Its outstanding features are: the concentration of organic matter in the wastewater is high and the pollution components contain obvious toxicity. If the pesticide wastewater cannot be treated with high quality and high efficiency, it is very likely to have a serious impact on the surrounding environment, groundwater, etc., and ultimately endanger human health. At present, the methods of pesticide wastewater treatment technology in my country are mainly physical and chemical methods, chemical methods, and biochemical methods, but the treatment process often involves phase changes, secondary pollution, complex operation...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/16C02F3/34C02F101/34
CPCC02F3/005C02F3/34C02F2101/306C02F2101/34H01M8/16Y02E60/50
Inventor 张靖晨张宏伟赵鹏刘宪华
Owner TIANJIN UNIV