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Process for treating mine water in high efficiency

A treatment process, mine water technology, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, permeation/dialysis water/sewage treatment, etc., can solve the problem of short service life of organic membrane equipment and low temperature of flocculants Problems such as failure, easy pollution of organic filter membrane, etc., achieve the effects of small footprint, easy pollution, and short process route

Inactive Publication Date: 2009-09-30
郑州华膜科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a high-efficiency treatment process for mine water to overcome the large area of ​​equipment in the existing process, the high cost of treatment, the low-temperature failure of flocculants, the easy pollution of organic membranes, the short service life of organic membrane equipment, the technical Complicated issues

Method used

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  • Process for treating mine water in high efficiency
  • Process for treating mine water in high efficiency

Examples

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Effect test

Embodiment 1

[0027] Example 1: Mine water with high suspended solids and high salinity

[0028] High-efficiency mine water treatment process, see the process flow figure 2 First, the mine water is introduced into the adjustment sedimentation tank for pre-sedimentation and homogenization, then an appropriate amount of CaO water, sodium hydroxide, sodium carbonate and gypsum are added to adjust the pH value to 8, and then it enters the cyclone for cyclone separation and filtration. Large solid particles larger than 2 mm are removed, and then enter ceramic membrane equipment for ceramic membrane cross-flow ultrafiltration, and the filtration precision of the ceramic membrane is 0.05-0.1 μm. The water after ceramic membrane ultrafiltration is desalinated to obtain treated mine water that meets drinking water standards; the concentrated water is poured into the regulating sedimentation tank for recycling treatment. The sludge settled in the sedimentation tank can be concentrated and filtered ...

Embodiment 2

[0029] Example 2: Mine water with high suspended solids and low salinity

[0030] High-efficiency mine water treatment process, the mine water is first introduced into the adjustment sedimentation tank for pre-sedimentation and homogenization, and then it is subjected to cyclone separation and filtration to remove large solid particles larger than 2mm in the mine water, followed by ceramic membrane cross-flow ultrafiltration. The filtering precision of the ceramic membrane is 0.05-0.1 μm, and the treated mine water meeting the domestic water standard can be obtained. The sludge settled in the sedimentation tank can be concentrated and filtered to recover the slime; the filtrate from the filter is circulated into the sedimentation tank for treatment. Before treatment, the bacteria content in the mine water was 15, and after treatment it was zero; the raw water turbidity was 680, and after treatment it was 0.4.

Embodiment 3

[0031] Embodiment 3: Mine water containing harmful ions such as fluorine, copper, lead, arsenic, chromium heavy metals

[0032]High-efficiency mine water treatment process, first introduce mine water into the adjustment sedimentation tank for pre-sedimentation and homogenization, then add appropriate amount of CaO water agent and sodium hydroxide to adjust the pH value to 8.5, so that harmful heavy metal substances form insoluble substances, and then carry out cyclone separation Filtration, the large solid matter larger than 2mm in the mine water is removed, and then the cross-flow ultrafiltration of the ceramic membrane is performed. The filtration accuracy of the ceramic membrane is 0.05-0.1 μm, and the treated mine water meeting the domestic water standard is obtained. The sludge settled in the sedimentation tank can be concentrated and filtered to recover the slime; the filtrate from the filter is circulated into the sedimentation tank for treatment. Before treatment, the ...

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Abstract

The invention belongs to the field of water treatment, and particularly relates to a process for treating mine water in high efficiency. The process comprises the following steps that: the mine water is subjected to preliminary sedimentation homogenization; large-particle solids in the mine water are removed by pre-treatment; and the mine water is subjected to ceramic membrane ultrafiltration to obtain the treated mine water meeting standards of the domestic water. The process has the advantages that: the route is short, the process is simple, and the floor space is small; the coagulation procedure and the flocculating sedimentation are unnecessary, so that the problem of low temperature inactivation of a flocculant does not exist; due to the adoption the ceramic membrane, the problems of easy pollution and difficult cleaning of the organic membrane are well solved, and the service life of equipment is long; and the labor intensity is low, the working efficiency is high, not only the mine water can be reasonably treated for reutilization, but also coal slime is recovered, so that no pollution and zero emission is realized.

Description

(1) Technical field [0001] The invention belongs to the field of water treatment, and in particular relates to a high-efficiency mine water treatment process. (2) Background technology [0002] The lack of drinking water resources is a worldwide problem. For coal mining areas, on the one hand, a large amount of discharge from underground mines causes waste of water resources and environmental pollution. On the other hand, there is a serious crisis in drinking water in mining areas due to water pollution and water shortage. my country's coal mine water treatment technology began in the late 1970s, but most of the sewage treatment work only stays in treatment for discharge, but reuse is the inevitable trend of the development of sewage treatment today. Combining pollution prevention and reuse can not only reduce the pollution of surface water bodies, but also alleviate the contradiction between supply and demand of water sources, killing two birds with one stone. [0003] The...

Claims

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Application Information

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IPC IPC(8): C02F9/02C02F9/04C02F1/52C02F1/44C02F5/00
Inventor 王建刚
Owner 郑州华膜科技有限公司
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