Treatment system and treatment process of coal mine water

Abstract

The invention discloses a treatment system and a treatment process of coal mine water. For the problem that resource utilization of the coal mine water cannot be realized effectively, a deep treatmentsystem and a strong brine treatment system are adopted, particularly various separation and purification systems comprising multi-medium filtering, walnut shell filtering, ozone oxidation, activatedcarbon filtering, ultrafiltration membrane filtering, reverse osmosis filtering and the like, separation and purification of the coal mine water are realized, the sodium chloride and the sodium sulfate with the industrial quality are produced, resource utilization is realized and the environmental risk is eliminated. The coal mine water resource treatment is divided into two parts of deep treatment and strong brine treatment. The aim of the deep treatment is to remove salt from the coal mine water to obtain pure water meeting the industrial water standard; and the aim of the strong brine treatment is to further treat the strong brine produced in the deep treatment process of the coal mine water to obtain the salt product with industrial product. The treatment system and the treatment process, which are provided by the invention, have the characteristics of good treatment effect and high process stability.

Description

Technical field [0001] The invention relates to the technical field of coal mine wastewater treatment, in particular to a coal mine water treatment system and treatment process. Background technique [0002] Coal accounts for more than half of my country's energy structure. A large amount of waste water is discharged during coal mining. If it is discharged directly without treatment, it will inevitably cause serious pollution to the environment, and at the same time cause a large amount of waste of water resources and fail to achieve the goal of circular economy. According to statistics, 40% of my country's mining areas are severely short of water, which has restricted the development of coal production. Northwest mining areas are mostly located in mountainous areas, where water resources are even more lacking. The surface water is mostly intermittent rivers. The flow rate in dry season is quite different, and the annual flow dilution capacity is poor. The sewage discharged into ...

AI Technical Summary

Problems solved by technology

During the mining process of coal mines, there is a large amount of underground water that needs to be discharged. Although the mine water has been treated to meet the standard, it still cannot be discharged. The local discharge will cause a large amount of land to be flooded and even pollute the environment.

At the same time, the discharge of underground water not only causes environmental impact, but also a great waste of water resources. In the face of the above problems, making full and reasonable use of underground drainage is the trend of environmental protection in the industry

[0005] Although some scientific research institutes and chemical companies in the industry are researching and developing mine water treatment schemes, especially resource utilization technologies, there are currently no successful cases of successful applications that are highly operable in actual production. It is imperative to solve the problem of resource utilization of mine water in coal mines for sustainable development

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