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Biological cathode, preparation method thereof, microbial micro-cell and device for treating acid mine waste water

A bio-cathode, micro-battery technology, applied in biological water/sewage treatment, biochemical fuel cells, battery electrodes, etc., to achieve the effect of increasing pH value

Active Publication Date: 2015-12-16
ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no report on the use of microbial immobilized pellets to prepare biocathode

Method used

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  • Biological cathode, preparation method thereof, microbial micro-cell and device for treating acid mine waste water
  • Biological cathode, preparation method thereof, microbial micro-cell and device for treating acid mine waste water
  • Biological cathode, preparation method thereof, microbial micro-cell and device for treating acid mine waste water

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Embodiment Construction

[0031] The preparation method of the active pellets (biocathode 4) immobilized with sulfate-reducing bacteria SRB is as follows: the SRB is cultured in a liquid state to a stable period, and concentrated by centrifugation until the concentration of the bacterial solution is 2×10 7 ~3×10 7 individual / mL. Add activated carbon powder (particle size 55.5-74μm, specific surface area 3500m 2 / g), the concentration of activated carbon powder in the SRB bacterial liquid is 90g / L, and it is sealed and left to absorb the bacterial liquid for 30min. Preparation of polyvinyl alcohol mixed solution: soak polyvinyl alcohol in pure water for 24 hours, stir and dissolve in a water bath at 90°C, then add sodium alginate, silicon dioxide, and calcium carbonate in sequence, and the mass ratio is water: polyvinyl alcohol: sodium alginate: two Silicon oxide: calcium carbonate = 900: 100: 10: 30: 3, stir until fully dissolved, then cool to 35-40°C; slowly add the dissolved polyvinyl alcohol mixed ...

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Abstract

The invention relates to a biological cathode, a preparation method thereof, a microbial micro-cell and a device for treating acid mine waste water. The biological cathode is composed of small active balls to which sulfate reducing bacteria are fixed. The biological cathode can effectively fix the sulfate reducing bacteria, active carbon granule adsorption current producing bacteria serve as an anode of the microbial micro-cell, the small active balls to which the sulfate reducing bacteria are fixed serve as a biological cathode of the microbial micro-cell, and then the three-dimensional microbial fuel cell (the microbial micro-cell for short) is formed. The device for treating the acid mine waste water can treat acid mine waste water and industrial waste water containing sulfate radicals and heavy metal ions, wherein the device contains the microbial micro-cell.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a biological cathode and a preparation method thereof, a microbial micro-battery, and a device for treating acidic mine wastewater. Background technique [0002] Acidic Mine Drainage (AMD) pollution is a worldwide problem. AMD contains high concentrations of sulfate and soluble heavy metal ions, and has low pH and high acidity. Therefore, once discharged, it will have a serious impact on the river and its organisms, and even pollute the groundwater body. Once pollution occurs, it will be difficult to control. [0003] Microbial fuel cell MFC technology is a new energy technology and organic wastewater treatment technology. It can use organic matter in various wastewater as fuel to generate electricity while treating wastewater, realize waste treatment and energy recovery, and has mild reaction conditions and energy. It has the advantages of high conversion efficiency a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/16H01M4/86H01M4/88H01M4/90C02F3/34C02F103/10
CPCH01M4/86H01M4/8663H01M4/88H01M4/90H01M8/16Y02E60/50
Inventor 蔡昌凤罗飞翔孙敬徐建平
Owner ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE