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Combined water treatment method for mine-type coal preparation plant and mine water

A technology for coal preparation plant and mine water, applied in the field of water treatment, can solve problems such as affecting the stable operation of coal preparation equipment and coal preparation efficiency in coal preparation plants, inability to remove water from the system, and increasing pond accidents, so as to ensure high efficiency and stability Operation, reducing environmental pollution accidents, and avoiding the effect of sewage discharge

Active Publication Date: 2019-11-26
内蒙古中钰泰德煤炭有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the mine is rich in water or the rainy season comes, the water system of the coal preparation plant usually has to withstand a large amount of water impact. When the water capacity of the system reaches saturation, since the water system of the coal preparation plant is a closed-circuit circulation system, this part of the water cannot be discharged from the system. It increases the probability of pool leakage accidents, causing sewage overflow, polluting the environment, and affecting the stable operation of coal preparation equipment and coal preparation efficiency in coal preparation plants

Method used

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  • Combined water treatment method for mine-type coal preparation plant and mine water
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  • Combined water treatment method for mine-type coal preparation plant and mine water

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Effect test

Embodiment 1

[0029] Embodiment 1: as figure 1 Shown, mine type coal preparation plant and mine water joint water treatment method, it comprises the following steps,

[0030] Step 1, cache the underground mine sludge water;

[0031] Step 2, the mine sludge water buffered in the step 1 is subjected to sedimentation treatment; the sediment overflow water generated by the sedimentation treatment is subjected to purification treatment, and the purification treatment includes sequential filtration treatment and microbial killing treatment; wherein the filtration The filtered sewage produced by the treatment is buffered together with the mine sludge water in the step 1; the industrial purified water produced after the microbial killing treatment is used for production water in mining areas, and as a backup water source for the coal preparation water; Carrying out the initial concentration treatment of the sediment bottom flow water produced by the precipitation treatment;

[0032] Step 3, buffe...

Embodiment 2

[0040] Embodiment 2: as figure 2 Shown, mine type coal preparation plant and mine water joint water treatment method, it comprises the following steps,

[0041] Step 1, cache the underground mine sludge water;

[0042] Step 2, the mine sludge water buffered in the step 1 is subjected to sedimentation treatment; the sediment overflow water generated by the sedimentation treatment is subjected to purification treatment, and the purification treatment includes sequential filtration treatment and microbial killing treatment; wherein the filtration The filtered sewage produced by the treatment is buffered together with the mine sludge water in the step 1; the industrial purified water produced after the microbial killing treatment is used for production water in mining areas, and as a backup water source for the coal preparation water; Carrying out the initial concentration treatment of the sediment bottom flow water produced by the precipitation treatment;

[0043] Step 3, buff...

Embodiment 3

[0051] Embodiment 3: as image 3 As shown, the mine-type coal preparation plant and mine water combined water treatment system includes a mine water treatment system 1 and a coal preparation water treatment system 2; the mine water treatment system 1 includes a regulating tank 101, a regulating lift pump 102, and a sludge sedimentation tank 103, two sludge agent pools 104, sedimentation lift pump 105, sludge thickening tank 106, sump 107, water collection lift pump 108, intermediate pool 109, intermediate water lift pump 110, filter 111, backwash pool 112, Backwash water lifting pump 113, contact disinfection tank 114, hypochlorous acid generator 115, disinfection lifting pump 116 and purification pool 117; the water outlet of regulating tank 101 is communicated with sludge settling tank 103 through pipeline by adjusting lifting pump 102, Adjust the lifting pump 102 to pump the sludge water buffered in the regulating tank 101 into the sludge settling tank 103 for sedimentation...

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Abstract

The invention discloses a combined water treatment method for mine-type coal preparation plant and mine water. The method comprises the following steps: performing buffering on underground mine sludgewater; performing precipitation treatment on the buffered mine sludge water; performing purification treatment on precipitate overflow water generated by the precipitation treatment; performing primary concentration treatment on the precipitate bottom-flow water generated by the precipitation treatment; performing secondary concentration treatment on the primarily concentrated bottom-flow water generated by the primary concentration treatment, and allowing the secondarily concentrated overflow water generated by the secondary concentration treatment to be used as water used in coal preparation production; performing filter pressing treatment on the secondarily concentrated bottom-flow water generated by the secondary concentration treatment; and air-drying coal slime generated by the filter pressing treatment for sale. The method provided by the invention has the following advantages: the method has strong shock resistance, low operating costs, a flexible system structure, avoids environmental pollution and waste of resources, and ensures efficient and stable operation of coal preparation.

Description

Technical field: [0001] The invention relates to a water treatment method, in particular to a combined water treatment method of a mine-type coal preparation plant and mine water Background technique: [0002] Raw coal is mixed with various mineral impurities during the production process, and inevitably mixed with roof and floor rocks and other impurities (wood, metal and cement components, etc.) during the mining and transportation process. With the improvement of coal mining mechanization and With the change of geological conditions, the quality of raw coal is getting worse and worse, which is manifested in the increase of gangue mixed with raw coal, the increase of ash content, the increase of fine coal and pulverized coal content, and the increase of moisture. In order to reduce the impurities in the raw coal and divide the coal into various products according to the quality and specifications, it is necessary to process the coal to meet the requirements of different us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F103/10
CPCC02F9/00C02F2001/007C02F1/001C02F2103/10C02F2303/04C02F2301/08
Inventor 王军王维利祁占海梁占荣宣亮柱张国栋高俊生李志忠王宏伟
Owner 内蒙古中钰泰德煤炭有限公司
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