Water Quality Improvement of Inflow Stream in Estuary using Wetland and Pond

습지와 유수지를 이용한 하구담수호 유입하천의 수질개선

Wetland systems are widely accepted natural water purification systems around the world in nonpoint sources pollution control. In this study, the field experiment to reduce nonpoint source pollution loadings from agricultural drainage and polluted stream waters using wetland and pond system was performed. The removal rate of $BOD_5$, TSS, T-N and T-P during growing season was 7.2%, 64.3%, 57.0%, and 60.3%, respectively. And removal rate of $BOD_5$, TSS, T-N and T-P during winter was -49.5%, -56.1 %, 30.5%, and 47.1%, respectively. In this study, pond-wetland system is more effective than wetland-pond system to remove nutrient.