저류형 인공습지를 이용한 비점오염물질 저감량 산정에 관한 연구

Abstract

This study investigated the removal capacity of a detention type constructed wetland to control non-point source pollutants. The removal efficiencies were calculated by the summation of loads(SOL) and the event mean concentration(EMC) method for rainfall period. As a result, removal efficiencies by SOL method were 24.48 % for SS, 79.00 % for COD, 82.66 % for TN, and 82.20 % for TP. And removal efficiencies by EMC method were -20.82 % for SS, 13.13 % for COD, 27.62 % for TN, and 25.80 % for TP, respectively. But, most of the pollutant were captured in wetland after stormevent, which is removed by biochemical mechni는 of wetland until next stormevent. So it is important to monitor wetland after stormevent. The result of monitoring after stormevent were 273.91 g/m2/yr for SS, 14.08 g/m2/yr for COD, 35.25 g/m2/yr for TN, 10.81 g/m2/yr for TP. In conclusion, this study may provide fundamental data for detention type wetland construction to control non-point source pollutants in future.