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부상여재 및 모래 여과장치에 의한 조류와 탁도 제거에 관한 연구

Study on Algae and Turbidity Removal by Floating-media and Sand Filter

  • 권대영 (인제대학교 토목공학과(건설기술연구소)) ;
  • 권재현 (인제대학교 환경공학부)
  • 발행 : 2012.10.15

초록

In Korea, almost every water treatment plant suffers from seasonal problem of algae and turbidity which result from eutrophication and heavy rainfall. To relieve this problem, experimental investigation was performed to study the applicability of a floating-media and sand filter to preliminary water treatment in terms of algae and turbidity removal. Experimental results using pure-cultured algae influent showed that the shape of algae species as well as filtration velocity affects the removal efficiency. From the experiments using natural river water, it was concluded that algae removal is more sensitive to floating-media depth but turbidity more sensitive to sand depth. As the filtration velocity increased, the removal of turbidity decreased but that of algae was not affected. The floating-media and sand filter removed more than 30 % of TP, TN, turbidity, Chl-a and CODcr, and less than 20 % of DOC and $UV_{254}$.

키워드

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