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Underground movable modular mine water treatment system

A technology of mine water and mine, which is applied in the field of underground treatment and reuse of coal mine wastewater, and can solve the problems of high oil-containing suspended solids, high dosage of chemicals, and high treatment costs

Active Publication Date: 2015-03-25
SHANXI LUAN ENVIRONMENTAL ENERGY DEV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the problems of oily and oily suspended solids in existing coal mine water, high dosage of chemicals, no degreasing measures and high treatment cost in the mine water treatment technology, and provides a method and device for underground mine water treatment , using the treatment method and device of the present invention to treat mine water is simple and convenient, without adding chemicals, and the treated mine water can be directly used for underground reuse, which greatly saves the investment and operating costs of wastewater treatment

Method used

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  • Underground movable modular mine water treatment system
  • Underground movable modular mine water treatment system
  • Underground movable modular mine water treatment system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0103] The experimental water was taken from the underground mine water test project of China Shenhua Shendong Cunyi Mine, and the treated water volume was 12t / d. The concentration of each pollutant in the influent is: suspended solids (SS) value 70mg / L, turbidity value 5.65NTU, oil value 15.3mg / L, DOC value 6.72mg / L, UV 254 Value 0.09cm -1 .

[0104] Firstly, the waste water to be treated is introduced into the downhole water tank for sedimentation treatment, and the large solid matter is removed to obtain rough water. The hydraulic retention time of the sedimentation treatment is 10h.

[0105] The coarse water after sedimentation treatment is subjected to rotary filtration treatment, and the mine water after sedimentation treatment flows into the rotary filter from top to bottom, and the fine suspended matter in it is intercepted to obtain the first rough purified water. When the filtration throughput of the rotary filter is reduced by 25%, the nozzle-type high-pressure wa...

Embodiment 2

[0110] The experimental water was taken from the underground mine water test project of China Shenhua Shendong Cunyi Mine, and the treated water volume was 12t / d. The concentration of each pollutant in the influent water is: suspended solids (SS) 100mg / L, turbidity 12.1NTU, oil 18.7mg / L, DOC 7.63mg / L, UV 254 0.10cm -1 .

[0111] Firstly, the waste water to be treated is introduced into the downhole water tank for sedimentation treatment, and the large solid matter is removed to obtain rough water. The hydraulic retention time of the sedimentation treatment is 15h.

[0112] The coarse water after sedimentation treatment is subjected to rotary filtration treatment, and the mine water after sedimentation treatment flows into the rotary filter from top to bottom, and the fine suspended matter in it is intercepted to obtain the first rough purified water. When the filtration throughput of the rotary filter is reduced by 35%, the nozzle-type high-pressure water backwashing system ...

Embodiment 3

[0117] The experimental water was taken from the underground mine water test project of China Shenhua Shendong Cunyi Mine, and the treated water volume was 12t / d. The concentration of each pollutant in the influent water is: suspended solids (SS) 110.2mg / L, turbidity 10.5NTU, oil 20.3mg / L, DOC 7.89mg / L, UV 254 0.11cm -1 .

[0118] Firstly, the waste water to be treated is introduced into the downhole water tank for sedimentation treatment to remove the large solid matter in it to obtain rough water, and the hydraulic retention time of the sedimentation treatment is 20h.

[0119] The mine water after sedimentation treatment is subjected to rotary filtration treatment, and the mine water after sedimentation treatment flows into the rotary filter from top to bottom, and the fine suspended matter in it is intercepted to obtain the first rough purified water. When the filtration throughput of the rotary filter is reduced by 30%, the nozzle-type high-pressure water backwashing sys...

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Abstract

The invention provides an underground movable modular mine water treatment system which comprises the following steps: firstly, introducing mine water into a shaft sump for sedimentation treatment; carrying out solid-liquid separation treatment on the settled mine water to remove fine suspended solids therein; carrying out oil water separation treatment on first coarse purified water to remove dissolved oil and emulsified oil to obtain second coarse purified water; and carrying out ultrafiltration treatment on the second coarse purified water to remove organic matters therein so as to obtain purified water. The invention provides a device for treating mine water underground. The device comprises the shaft sump, a solid-liquid separation device, an oil water separation device, an ultrafiltration device and a control device. The system provided by the invention has an obvious effect for removing organic matters in mine waste water. The pollutant concentrations of the mine waste water treated by the system are obviously reduced, and the removal rate is relatively high. The device provided by the invention can be directly arranged in the coal mine and the mine water treated is directly reused in the pit, so that the investment and operating cost of waste water treatment are hugely saved.

Description

technical field [0001] The invention relates to underground treatment and reuse of coal mine wastewater, in particular to a method and device for underground mine water treatment. Background technique [0002] Mine water wastewater in coal mines is mainly caused by roadway exposure and goaf subsidence affecting groundwater sources, and its sources are mainly atmospheric precipitation, surface water, fault water, aquifer water, and goaf water. The mine water in the coal mine is affected by the domestic sewage of the underground workers due to the erosion of the coal seam. Therefore, the pollution sources that not only have the characteristics of domestic sewage, but also have the characteristics of coal industry wastewater, mainly have the following characteristics: the content of suspended solids in wastewater is high, and the turbidity is high; the particle size of suspended solids is small, the density is small, and the settlement performance is poor; the coagulation effec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/02
CPCC02F1/444C02F9/00C02F2001/007C02F2103/10C02F2301/08
Inventor 白宏峰任鸿兰王永政李利风李书善黄炜伟李开和李茂兵张荣军
Owner SHANXI LUAN ENVIRONMENTAL ENERGY DEV
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