비점오염원 저감을 위한 봉산 인공습지의 오염물질 정화효율 평가

초록

To treat non-point source pollution in Juam lake, removal efficiencies of pollutants were investigated in Bongsan constructed wetlands (CWs) at different treatment time, stages and wastewater loads. The constructed wetlands consisted of forebay, 1^st and 2^nd wetlands. The concentrations of BOD, SS, T-N, and T-P in inflow were 1.87 mg L^-1, 1.62 mg L^-1, 11.47 mg L^-1, and 4.40 mg L^-1, respectively. The removal rates of BOD, SS,T-N, and T-P in Bongsan CWs were 26, 18, 16 and 9%, respectively. The removal rates of BOD and T-N were higher than those for SS and T-P. The amounts of pollutant removal in Bongsan CWs were higher in the order of forebay > 1^st wetland > 2^nd wetland for BOD, forebay > 2^nd wetland > 1^st wetland for SS, 1^st wetland > forebay > 2^nd wetland for T-N and 2nd wetland > forebay > 1^st wetland for T-P.

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