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Method for purification treatment of underground wastewater of coal mine

A technology for wastewater purification and coal mines, which is used in mining wastewater treatment, chemical instruments and methods, and multi-stage water/sewage treatment.

Active Publication Date: 2012-07-04
辽宁虹京实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the addition of flocculants or coagulants containing chemical components, the treated water cannot be directly used as industrial raw water
The traditional process occupies a large amount of land, requires a large investment, has poor water quality, and regularly removes silt, resulting in intermittent production

Method used

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  • Method for purification treatment of underground wastewater of coal mine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 110000

[0019] Example 110000m 3 / d Coal mine underground wastewater purification treatment

[0020] Equipment: 1000m 3 One of the original water pools, set on the ground, 2000m 3 A reclaimed water pool and a deionized water pool are located underground and covered, and water treatment equipment, belt filters, multi-media filters, security filters, ionic membrane reverse osmosis machines, fine water tanks, and anion exchangers are installed on the ground. , a carbon dioxide removal tower, a cation exchanger and a device for removing oxygen.

[0021] 1. Separation of suspended solids process: the coal mine underground wastewater is input into the raw water pool, and flows into the filter of the belt filter by the potential difference. The filter cloth with a pore size of about 300 mesh is laid in the filter, and the water is filtered by the negative pressure formed by vacuum. The cloth enters the water collection bin of the filter, and when it flows into the middle water tank, the s...

Embodiment 23000

[0025] Example 23000m 3 / d Abandoned coal mine underground wastewater purification treatment

[0026] Equipped with 200m 3 One of the original water pools, set on the ground, 500m 3 A reclaimed water pool and a pool for deionized water are located underground and covered, and water treatment equipment, belt filters, multi-media filters, security filters, ionic membrane reverse osmosis machines, fine water tanks, anion One exchanger, one decarbonation tower, one cation exchanger and one deoxygenation device.

[0027] 1. Separation of suspended solids process: the coal mine underground wastewater is input into the raw water pool, and flows into the filter of the belt filter by the potential difference. The filter cloth has an aperture of 800 mesh, and the negative pressure formed by the vacuum penetrates the filter cloth and enters the filter collection. The water tank flows into the reclaimed water tank, the suspended matter is less than 10ppm, and the coal powder and sedime...

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Abstract

The invention provides a method for purification treatment of underground wastewater of a coal mine. The underground wastewater of the coal mine is subjected to the purification treatment to form deionized water through the processes of separating suspended matters, filtering and impurity removal, ionic membrane reverse-osmosis and water softening by an ion exchange. The method can produce clear and limpid water with the suspended matters less than 10ppm by only using a belt filter without using chemical flocculant or purifying agent or constructing a large-scale precipitating pool and occupying a great deal of land. The mineral substances and harmful impurities in the water are removed through a multi-medium filter, a security filter, an ionic membrane reverse-osmosis machine and an anion-cation exchange to meet the standard requirement on industrial water. Therefore, the underground wastewater of the coal mine realizes resource utilization. The method is suitable for the undergroundwastewater purification treatment and industrial application for new and old coal mines.

Description

technical field [0001] The invention provides a water purification treatment technology in the field of environmental protection, in particular a method for purification treatment of underground coal mine wastewater. Background technique [0002] The underground wastewater of coal mines and abandoned coal mines is not only a pollution source with industry characteristics, but also a precious water resource. At present, many coal mines in my country are seriously short of water on the one hand, and on the other hand, the underground wastewater is directly discharged without treatment, causing a lot of waste of water resources and polluting the environment, which to a considerable extent restricts the production of the coal industry and the sustainable development of the mining area economy. . At present, the domestic treatment of underground coal mine wastewater generally adopts the method of adding flocculant precipitation, so that the suspended solids and organic matter in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/04C02F1/44C02F1/42C02F103/10
Inventor 陈香友刘德忠张仁王鹏韩帅利林郭昆鹏佟纯永王立春
Owner 辽宁虹京实业有限公司