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Control apparatus for acid mine drainage

A mine wastewater, acid technology, applied in mining wastewater treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. The effect of COD emission exceeding the standard, solving carbon source shortage and improving activity

Active Publication Date: 2015-11-18
ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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Problems solved by technology

[0004] However, when the biochemical reaction treatment device based on the sulfate-reducing bacteria reduction method, or the permeable reaction well based on the above-mentioned sulfate-reducing bacteria bio-cathode microbial battery is used to treat acid mine wastewater in situ, it is difficult to control the amount of carbon source COD that needs to be added. Wastewater in SO 4 2- And when the discharge of heavy metal ions reaches the standard, some carbon sources cannot be completely oxidized, resulting in the problem that the effluent COD is easy to exceed the standard

Method used

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Embodiment Construction

[0032]Set up two sets of permeable reaction well simulation test systems in parallel (denoted as 1# test system and 2# test system respectively), and use PVC pipe string 11 to simulate the well wall, with a height of 500mm and a diameter of 160mm, at a distance of 50mm from the bottom of PVC pipe string 11 A water inlet 12 is set, a water outlet 2 is set 50 mm from the top of the PVC pipe column 11, and a sampling port is set in the middle of the water inlet 12 and the water outlet 2. Firstly, small ceramsite (particle size 1-2mm), large ceramsite (3-5mm) and corn cob (3-5mm) loaded with sulfate-reducing bacteria were respectively mixed according to the mass ratio of 3:3:1 and 6:6. : 1 mix thoroughly as active medium 8 standby (1# test system uses small ceramsite, large ceramsite and the mass ratio of the corncob that is solidly loaded with sulfate-reducing bacteria is the active medium of 3:3:1, 2# test system Use a 4:4:1 active medium). The cylinder is first filled with act...

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Abstract

The present invention relates to a control apparatus for acid mine drainage. The control apparatus comprises a permeable reaction well based on an air cathode microbial fuel cell; the middle lower part of the reaction well is filled with an active medium; the upper part of the reaction well is an air cathode microbial fuel cell area; the air cathode microbial fuel cell is arranged in a concentric structure; the microbial fuel cell area structure from the center to the outside comprises an air cathode area, a proton exchange membrane, an anode area and an active medium area; and the lower port of the air cathode area is sealed by a sealing sleeve. The control apparatus of the present invention can effectively reduce the COD concentration of the permeable reaction well effluent while effective treatment of sulfate and heavy metals, so that treated wastewater completely reaches discharge standards.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, in particular to a treatment device for acid mine wastewater. Background technique [0002] Acid Mine Drainage (AMD for short) refers to the mine drainage produced by a series of oxidation and hydrolysis during the mining process of coal seams or pyrite deposits, and its pH value is Below 6, SO 4 2- High concentration, and contains heavy metal ions. Acidic mine water will corrode mine drainage equipment, steel rails and other mechanical and electrical equipment, loosen the structure of concrete buildings, pollute groundwater and damage the environment. [0003] The prior art "201410081974.7 A Treatment Device for Acidic Mine Wastewater" discloses a treatment device for acidic mine wastewater. The device includes a permeable reaction well based on a microbial battery. Packing biochemical reaction and microbial fuel cell area. The microbial fuel cell and the reaction well are arranged ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F103/10
Inventor 蔡昌凤戚甫长徐建平江林罗飞翔孙敬
Owner ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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