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Pit water advanced treatment method

A technology for advanced treatment of mine water, applied in mining wastewater treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve problems such as high cost, limited industrial application, and tediousness

Inactive Publication Date: 2014-10-29
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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The preliminary treatment step adopts pre-sedimentation adjustment tank-pipeline mixing-primary purification-secondary purification-intermediate water 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.

Embodiment 2

[0021] 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

[0023] 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.

[0024] The advanced treatment process is mainly desalination, and the combination of membrane treatment method and ion exchange method can increase the desalination capacity.

[0025] Concentrate and sludge treatment steps are also included:

[0026] 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 a pit water advanced treatment method which comprises the following steps: carrying out primary treatment filter the pit water, primarily regulating the pH value of the pit water, carrying out metal removal technique to prevent excessive metals in the pit water, and carrying out advanced treatment so that the pit water can satisfy the standard for domestic usage. The process omits multiple complex resource-consuming steps, and adopts a simple and effective mode to treat the pit water, thereby achieving considerable effects.

Description

technical field [0001] The invention relates to a wastewater treatment method, in particular to a mine water advanced treatment method. 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. Contents of the invention [0003] The invention provides a method for advanced treatment of mine water. The method for advanced treatment of mine water undergoes preliminary treatment and filtration of mine water, and preliminarily adjusts ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F103/10
Inventor 邓悄
Owner 成都昱阳鑫达实业有限公司