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Removal of Phosphorus by Blast Furnace Slag as a Filter Medium in a Self-Purifying Swage Treatment System  

Chung, Dong Yang (Dept. of Technology Education, Korea National University of Education)
Publication Information
Journal of the Korean Society of Environmental Restoration Technology / v.7, no.2, 2004 , pp. 68-74 More about this Journal
Abstract
A blast furnace slag(BFS) has been used as a filter medium for the treatment of domestic waste waters during the period of 9-month. More than 90% of phosphorus was removed while the hardness of the treated water increased by 5 times and the pH was significantly raised from 6.8 to 10.8. The high hardness and pH of the treated water indicated dissolution of BSF by the sewage. The experimental results suggest that BFS could be utilized for the removal of phosphorus in the waste water treatment plant using aquatic plants and gravels.
Keywords
Blast furnace slag; Phosphorus removal; aquatic plant; Gravels; Waste water treatment;
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