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System for controlling migration of heavy metal elements of goaf filling body by using electrophoresis theory

A technology of metal elements and gobs, applied in water treatment parameter control, filling materials, magnetic/electric field water/sewage treatment, etc., can solve problems such as undiscovered treatment methods, and achieve technically feasible, economically reasonable, and constructive The effect of simple method

Active Publication Date: 2018-06-08
CHINA UNIV OF MINING & TECH
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Problems solved by technology

At present, no effective treatment method has been found in the existing technology

Method used

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  • System for controlling migration of heavy metal elements of goaf filling body by using electrophoresis theory
  • System for controlling migration of heavy metal elements of goaf filling body by using electrophoresis theory
  • System for controlling migration of heavy metal elements of goaf filling body by using electrophoresis theory

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Embodiment Construction

[0017] Implementation of the present invention will be further described below in conjunction with accompanying drawing:

[0018] Such as figure 1 As shown, since the opening of the cut hole, with the advancement of the coal mining face, screen pipes 3 with the same length as the coal mining face are gradually laid on the floor of the goaf every 10-40m in the parallel coal mining face. The surface of the screen pipe 3 is evenly spread over the seepage holes, and is wrapped with several layers of geotextiles, and the surrounding area of ​​the screen pipe 3 is covered with sand and gravel.

[0019] Such as figure 1 , 2 As shown, a row of conductive plates 2 connected in series is arranged in the goaf every 5-20 m from the parallel coal mining face starting from the incision, and each row of conductive plates is equal to the length of the coal mining face. Each conductive plate is 1m high, 2m long, and 2cm wide, such as image 3 As shown, these conductive plates rely on sever...

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Abstract

The invention discloses a system for controlling the migration of heavy metal elements of a goaf filling body by using an electrophoresis theory. The system comprises a direct current power supply, conductive plates, a screen pipe, a concentration pipeline, a water suction pump, a water storage basin (6) and a water drainage pump. A column of conductive plates which are as long as a coal face arearranged in parallel to the coal face and in a goaf at certain distances; two adjacent columns of conductive plates are connected to different electrodes of the direct current power supply; the screenpipe is laid below the conductive plate connected to a negative electrode of the power supply. Heavy metal ions can be gathered around the conductive plate connected to the negative electrode of thepower supply under the action of an electric field, and then the water suction pump is turned on to enable sewage to pass through the screen pipe and the concentration pipeline and be gathered in an impounding reservoir; finally, the sewage is drained to the ground for treatment through the water drainage pump. The system can effectively control the migration of the heavy metal ions in surroundingrocks of the goaf to reduce pollution, caused by the heavy metal ions of the coal gangue filling body for the goaf, to an underground water environment.

Description

technical field [0001] The invention relates to a migration management system for filling heavy metal elements in goafs of coal mines, in particular to a system for controlling the migration of heavy metal elements in goaf fillings by using the principle of electrophoresis. Background technique [0002] With the application and promotion of coal gangue filling coal mining technology, after coal gangue is filled into the goaf, after long-term leaching and soaking in mine water, the heavy metal ions contained in it are precipitated from the coal gangue, and a large amount of heavy metal ions are deposited in the mining area. The movement and migration of the surrounding rock in the empty area will have a certain impact on the groundwater environment. The current prior art has not yet found an effective governance method. Contents of the invention [0003] The purpose of the present invention is to make up for the gap in the treatment of environmental pollution caused by fil...

Claims

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Application Information

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IPC IPC(8): C02F1/48C02F101/20C02F103/10
CPCC02F1/48C02F2101/20C02F2103/10C02F2209/42E21F15/00
Inventor 黄艳利高华东张吉雄李俊孟韩震宋天奇孔国强王枫晚
Owner CHINA UNIV OF MINING & TECH
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