Abstract:

In order to moderate the situations of water-resource shortage in mining areas, the mine drainage water of Halagou is treated and utilized as proudction water supply, by using the reuse system including pre-precipitaion of goaf formed after mining, aeration of water-jetter, and contact-oxidation filtration of interacted flushing filters. The practice application showed that the system could suit for the underground environment of coal mines, and could remove suspended solids (SS), ferrous (Fe2+) and mangano (Mn2+) effectively. The mean concentrations of SS, Fe2+ and Mn2+ in the inflow are 323mg/L, 1.21mg/L and 0.28mg/L，and in the last effluent are 2mg/L, 0.11mg/L and 0.04mg/L，with the mean removal rates of 99.4%，90.9% and 85.7%, respectively. The effluent quality can meet the demands of production water supply in the underground of coal mines.

Key words: mine drainage water, water treatment in the underground mine, goaf, interacted flushing filters, iron removal, manganese removal