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Microbiological fuel cell for treating sulfur-containing wastewater

A technology of fuel cells and microorganisms, which is applied in the field of water pollution treatment, can solve the problems of low investment, high energy consumption, and high investment, and achieve the effect of synchronizing treatment and electricity production and being easy to recycle.

Inactive Publication Date: 2012-05-23
INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI
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  • Abstract
  • Description
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Problems solved by technology

At present, the methods for treating sulfur-containing wastewater mainly include: physical-chemical methods and biochemical methods. The former consumes a lot of energy, while the latter requires high investment. Now there is an urgent need for a technology with low energy consumption and low investment to solve this problem.

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  • Microbiological fuel cell for treating sulfur-containing wastewater
  • Microbiological fuel cell for treating sulfur-containing wastewater
  • Microbiological fuel cell for treating sulfur-containing wastewater

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Embodiment Construction

[0011] Specific implementation plan

[0012] Such as figure 1 As shown, the microbial fuel cell used in desulfurization treatment is composed of a monopolar chamber, the reaction system is a fed-in system, the anode 5 is activated carbon cloth, and sulfur-reducing bacteria form an electricity-producing biofilm on it, and it is placed in the anode chamber In the solution, the cathode is directly exposed to the air, and the artificial wastewater containing sulfate is sent from the liquid storage tank 1 to the water inlet at the lower part through the air pump, and the water outlet is at the upper part, so as to ensure that the entire reaction system is in an anaerobic state. The microbial fuel cell of the present invention treats sulfur-containing wastewater. The sulfide content in the wastewater is 54.72g. After 140h of operation, the sulfide content in the wastewater is 0.18g, which generates 12.3g of sulfur, and the removal rate of sulfide reaches 99%. Electricity production per...

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Abstract

The invention discloses a microbiological fuel cell applied to treating sulfur-containing wastewater. A single-compartment structure is adopted, active carbon cloth is adopted as an anode of enriching microorganisms, a cathode is exposed in air, and the space between the cathode and the anode is 3-5mm. The microbiological fuel cell can be used for effectively transforming sulfate in the wastewater into simple substance sulphur with a transformation rate of reaching 99 percent, and the simple substance sulfur can be recycled, and higher electric energy can be obtained. The microbiological fuel cell has the characteristics of low preparation cost, low internal resistance and high operation efficiency, and has better environment friendliness and economic benefit.

Description

Technical field [0001] The invention belongs to the technical field of water pollution treatment, and is a method for converting sulfate in wastewater into elemental sulfur while recovering energy. Background technique [0002] Sulfide is an important indicator of water pollution. Sulfide in water includes soluble H 2 S, HS - , S 2- , And soluble sulfides, acid-soluble metal sulfides and unelectrolyzed organic and inorganic sulfides present in suspension. In addition to being able to corrode metals, sulfide can also be oxidized to sulfate by microorganisms in the sewage, and then corrode sewer pipes. Sulfates in wastewater come from a wide range of sources: in wastewater discharged from industrial sectors such as chemical, pharmaceutical, metal processing and mining, and some solid desulfurizers are used to remove SO in flue gas 2 The solid desulfurizer regeneration waste liquid contains high concentrations of sulfate, so it is absolutely necessary to strengthen the treatment of ...

Claims

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Application Information

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IPC IPC(8): H01M8/00H01M8/16C02F3/34C02F3/28
CPCY02E60/527Y02E60/50
Inventor 赵峰陈立香
Owner INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI
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