비점오염원 처리를 위한 동복천 인공습지의 시기별 및 부하량별 수처리 효율 평가

Abstract

consisted of forebay, wetlands (1 st , 2 nd , 3 rd , 4 th , 5 th , 6 th , 7 th , and 8 th wetlands) and sedimentation pond. The concentrations of BOD, SS, T-N, and T-P in inflow ranged 0.85～3.14 mg L -1 , 3.33～9.70 mg L -1 , 0.64～5.33 mg L -1 , and 0.03～0.10 mg L -1 from April to October in 2008, respectively. The removal rates of BOD, SS, T-N, and T-P in Dongbokcheon CWs were 34%, 5%, 31%, and 13%, respectively. The removal rates of BOD and T-N were higher than those for SS and T-P. The amounts of pollutant removal in Dongbokcheon CWs were higher in the order of forebay > wetlands > sedimentation pond for BOD, sedimentation pond > wetlands > forebay for SS, sedimentation pond > forebay > wetlands for T-N. The amount of T-P removal in wetlands was higher than forebay and sedimentation pond.