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Comprehensive treatment method for acid mine water of small abandoned coal mines

A technology for the comprehensive treatment of acidic mine water, which is applied in the fields of mining wastewater treatment, water treatment parameter control, chemical instruments and methods, etc., and can solve the problems of difficult mine wastewater treatment, high treatment cost, scattered and disordered small coal mines, etc. , to achieve low infrastructure and operating costs, prevent sewage seepage and outflow, and reduce sewage replenishment

Inactive Publication Date: 2018-04-20
中国煤炭地质总局水文地质局
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Problems solved by technology

[0003] At present, the domestic mine water treatment mostly adopts the terminal treatment method, and related treatment facilities are built at the end of sewage discharge. Due to the large amount of precipitation in southern my country, the development of surface karst fissures, and the good groundwater supply conditions, the sewage treatment volume is relatively large, and the treatment cost stay high
At the same time, due to the scattered and disordered small coal mines and the existence of a large amount of coal gangue piled on the surface, it is very difficult to treat mine wastewater

Method used

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  • Comprehensive treatment method for acid mine water of small abandoned coal mines
  • Comprehensive treatment method for acid mine water of small abandoned coal mines

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Embodiment Construction

[0045] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0046] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention Creation and simplified description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be un...

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Abstract

The invention provides a comprehensive treatment method for acid mine water of small abandoned coal mines. A slurry is injected into a grouting filling layer, a plugging surface layer is formed afterthe slurry is solidified, the underground water supplementary amount of atmospheric precipitation to underground mined-out areas of the abandoned mines in a target area is reduced, and a permeable reactive barrier, a continuous alkali production pool and a constructed wetland section are continuously arranged at mine wellheads of the small abandoned coal mines with relatively good maintenance conditions; a drainage canal collection system is built around surface rivers in the target area; coal gangue piles in the target area are subjected to closed treatment. The integrated technical scheme realizes comprehensive treatment of the acid mine water in a number of small abandoned coal mines distributed in the target area, and has the advantages of high practicability, low cost and good effect.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment in coal mines, in particular to a method for comprehensive treatment of acid mine water in abandoned small coal mines. Background technique [0002] There are a large number of abandoned small coal mines in the karst areas of southern China. In typical southern karst karst areas, precipitation enters the coal seam gobs and is soaked to form mine water with high iron and manganese content. The mine water comes from the mine mouth or surface karst Channels and fissures flow out into surface water and groundwater, resulting in serious water environmental pollution. [0003] At present, the domestic mine water treatment mostly adopts the terminal treatment method, and related treatment facilities are built at the end of the sewage discharge. Due to the large amount of precipitation in southern my country, the development of surface karst fissures, and the good groundwater supply condition...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14E21F15/00C02F103/10C02F101/20C02F101/30
CPCC02F1/28C02F1/44C02F1/66C02F3/327C02F9/00C02F2101/101C02F2101/20C02F2101/203C02F2101/206C02F2101/30C02F2103/10C02F2209/10C02F2209/22E21F15/00
Inventor 李曦滨蒋向明任虎俊蔺国华李向东
Owner 中国煤炭地质总局水文地质局
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