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Device and method for deeply treating mine water for underground coal mine

A technology for advanced treatment and mine water, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, ion-exchanged water/sewage treatment, etc., can solve hidden safety hazards, complex overall structure, time-consuming repair and maintenance work and other problems, to achieve the effect of good completeness and high safety

Active Publication Date: 2010-05-26
CHINA COAL TECH & ENG GRP HANGZHOU ENVIRONMENTAL PROTECTION INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the underground mine water treatment system of this invention still needs electric power or other power for control because it contains power-consuming devices, so the entire treatment system has high requirements for operational safety when working underground, and there are certain potential safety hazards
In addition, this invention is mainly aimed at treating mine water with high content of metal ions such as iron and manganese, and the treatment effect for mine water with high salt content is still not ideal, and the overall structure of the invention is complicated, and the repair and maintenance of the whole system is time-consuming laborious

Method used

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  • Device and method for deeply treating mine water for underground coal mine
  • Device and method for deeply treating mine water for underground coal mine
  • Device and method for deeply treating mine water for underground coal mine

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Such as figure 2 As shown, a coal mine underground mine water advanced treatment device, the device is arranged in the underground, including successively connected through pipelines: pressure adjustment unit 1-1, primary filter unit 2-2, dehardening unit 3-3, two stage filtration unit 4-4 and nanofiltration unit 5-5. It meets the advanced treatment of mine water with an inlet pressure of 0.7-2.0Mpa, and the treatment capacity is 1-2t / h.

[0031] The pressure regulating unit 1 - 1 mainly includes a filter 2 and a pressure reducing valve 3 . The feedwater inlet located at the front end of the pressure regulating unit 1-1 is connected to the filter 2, the pressure reducing valve 3, and the flow regulating valve 5 through pipelines in turn, and a shut-off valve 1, a pressure reducing valve 3 and A safety valve 4 is provided between the flow regulating valves 5, and the safety valve 4 is used to ensure safe pressure relief when the aforementioned pressure reducing valve fa...

Embodiment 2

[0041] A mine water advanced treatment device for underground coal mines, the specific scheme is the same as that of embodiment 1, the difference is that: figure 1 As shown, on the basis of the device described in Embodiment 1, the control unit 6-6 based on the hydraulic control system is added, and the pressure adjustment unit is improved; the number of primary filter units is increased, and the backwashing form is changed; the nanofiltration is changed Unit type and quantity. The added hydraulic control system realizes functions such as automatic start-stop and remote control of the equipment, which can meet the advanced treatment of mine water with an inlet water pressure of 2.0-3.5Mpa, with a processing capacity of 5t / h and a recovery rate of more than 70%. Such as image 3 As shown, the specific improvements are as follows:

[0042] The pressure regulating unit 1-1 is changed from the original one-stage decompression to the two-stage decompression, so that the incoming ...

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Abstract

The invention relates to a water treatment device, in particular to a device and a method for deeply treating mine water for an underground coal mine. The device comprises a pressure conditioning unit, a primary filtering unit, a hardness removing unit, a secondary filtering unit and a nanofiltration unit. When mine water is treated by using the device, the mine water is firstly decompressed through the pressure conditioning unit, is secondly filtered through the primary filtering unit, is thirdly subjected to calcium and magnesium ion removal through the hardness removing unit, is fourthly filtered secondarily through the secondary filtering unit, and is finally filtered through the nanofiltration unit to obtain reusable clean water. The device organically combines the units, stably decompresses and conditions inflow pressure of pipelines from 2.5-3.5MPa to 0.6-0.7MPa serving as power and the water source of mine water deep treatment so as to ensure that the whole system does not require electric power or other power, and solves the problem that large safety control equipment is required when the current common deeply treating equipment on the ground is applied to underground.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering sewage regeneration and utilization, and relates to a water treatment device, in particular to a mine water advanced treatment device and method for underground coal mines. Background technique [0002] my country is rich in coal resources, which have accounted for more than 2 / 3 of my country's primary energy production and consumption for a long time. In a long period of time in the future, the pattern of energy supply dominated by coal will not change. my country's coal mining areas are mainly distributed in water-scarce areas such as East China, North China, Northeast China, and Northwest China. Reusing mine water to production and life after treatment has become one of the main ways to solve the shortage of water resources in mining areas. Use the specific requirements of the Special Plan. Underground water in coal mines in my country mainly includes dust suppression spray, e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/02C02F1/44C02F1/42
Inventor 高亮周如禄毛维东郭中权朱留生
Owner CHINA COAL TECH & ENG GRP HANGZHOU ENVIRONMENTAL PROTECTION INST
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