Experimental Research on Mine Water Purified Treatment by Modified Filter Media

摘要

Iron oxide coated quartz sand and anthracite doublemodified filter media have been made by hightemperature heating method. Through the filtrating experiment comparison, a variety of pollutants from coal mining water were removed effectively. After 6 h filtrating, the effluent turbidity is 0.3 NTU, and the CODcr is down to 2.5 mg/L, both of them is less than the value of the standards about drinking water limit. Besides, the removal rate of Fe and Mn is high to 88.7% and 66.7% respectively. By the reverse washing experiment, the reverse washing strength q=16 L/(m2·s) and filtration cycle T=370 min. After the water quality is treated by the modified filter media filtration. It has met the desalination requirements, and it will have broad application prospects in polluted mine groundwater.