Current situation and prospect of coal mine water treatment technology

Coal mine water is an important unconventional water source, and the resource utilization of mine water is of great significance in alleviating water scarcity and environmental protection in mining areas. This paper analyzed the source and water quality characteristics of mine water, and summarized the main treatment technologies of different types of mine water such as suspended solids, high salinity, acidity and special pollutants, as well as the characteristics and existing problems of each treatment technology. The majority of mine water contained a significant amount of suspended solids, with considerable fluctuations in both water quality and quantity. Efforts should be focused on enhancing the presettling capabilities of both underground water storage facilities and surface regulating reservoirs, developing and improving underground treatment technology for mining wells, and combining automation and intelligence to achieve unmanned operation. With the continuous increase of highly salinity mine water,