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Advanced treatment method for mine water

An advanced treatment, mine water technology, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problems of complex and diverse mine water quality, high cost and industrial application limitations

Inactive Publication Date: 2014-10-08
成都昱阳鑫达实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are many mine water treatment methods, most of them are cumbersome and costly designs, which have many restrictions on industrial applications
[0003] However, in the actual process of coal mining, mine water has been excavated many times, and due to the influence of human factors, it has been mixed with coal powder, rock debris and a small amount of oil pollution formed by mechanical operations, making the quality of mine water complex and diverse.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The preliminary treatment step adopts pre-sedimentation adjustment tank-pipeline mixing-primary purification-secondary purification-intermediate tank for sedimentation and separation treatment to complete the removal of suspended solids, and initially adjust the pH value to the range of 7.0-8.0. In the primary purification and secondary purification A titanium dioxide photocatalytic device is added, the titanium dioxide photocatalytic device adopts the setting of nano-scale titanium dioxide supported by activated carbon, and a plurality of ultraviolet lamps are arranged above the catalytic device, and the titanium dioxide photocatalytic device is also connected with an oxygen pump. The overall effect is Change the flow state of the photocatalytic device into turbulent flow and increase oxygen to enhance the mass transfer effect.

Embodiment 2

[0022] The metal removal process is carried out by compressed air oxidation-metal catalyst catalytic filtration process. At this time, the metal mass concentration in the mine water is <0.25mg / L. This is because the pH of the mine water is adjusted during the preliminary treatment to make it an oxidizing chemical environment that is favorable for metal removal, so good results can be obtained under good chemical reaction conditions.

Embodiment 3

[0024] In the advanced treatment step, membrane pretreatment includes microfiltration, ultrafiltration and nanofiltration. The advanced treatment adopts the method of microfiltration-ultrafiltration-ion exchange. In the advanced treatment, the pH value is further adjusted to the range of 6.8-7.2. Membrane pretreatment process is superior to traditional treatment methods in terms of treatment effect, and more importantly, it has little negative impact on the environment because only membrane method is used.

[0025] The advanced treatment process is mainly desalination, and the combination of membrane treatment method and ion exchange method can increase the desalination capacity.

[0026] Concentrate and sludge treatment steps are also included:

[0027] Concentrated water treatment: directly used for gangue hill fire extinguishing; sludge is treated by dehydration system and exported together with mine coal slime.

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PUM

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Abstract

The invention discloses an advanced treatment method for mine water. The advanced treatment method for mine water can be used for removing a great deal of coal dust and rock debris through primarily treating and filtering mine water and treating the mine water by using a titanium dioxide photocatalysis device by means of the flocculation and degradation effects of activated carbon loaded titanium dioxide; even more important, due to the arrangement of the photocatalysis device, organisms which are difficult to oxidize can be converted into organisms which are easy to oxidize, so that the basis is laid for subsequent treatment; a metal removal process is adopted, so that metal in the mine water is prevented from being excessive; then, the mine water is subjected to advanced treatment so as to be up to the living use standard, and more complex and resource-consuming steps in the traditional method are omitted in the process. The mine water is treated by using a simple and effective way to achieve a considerable effect.

Description

technical field [0001] The invention relates to a wastewater treatment method, in particular to a method for advanced treatment of mine water. Background technique [0002] A large amount of mine water is discharged during coal mining, which not only wastes water resources, but also causes serious pollution to the environment. Therefore, it is necessary to treat mine water so that it can meet the standard of daily use, so as to prevent the unwarranted waste of water resources, avoid water environmental pollution, save water resources and improve the utilization rate of water resources. Although there are many mine water treatment methods, most of them are cumbersome and costly designs, which have many restrictions on industrial applications. [0003] However, in the actual process of coal mining, the mine water has been excavated many times, and due to the influence of human factors, it has been mixed with coal powder, rock debris and a small amount of oil pollution formed ...

Claims

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Application Information

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IPC IPC(8): C02F9/08
Inventor 邓悄
Owner 成都昱阳鑫达实业有限公司