Assessment of Free Water Surface Constructed Wetland Design Parameters for the Reduction of Agricultural Nonpoint Source Pollution

농업유역 비점원오염 저감을 위한 자유수면형 인공습지 설계인자 평가

The objective of this study is to evaluate design parameters of free water surface constructed wetland for the reduction of agricultural nonpoint source pollution. From literature review, the key design parameters were selected as influent concentration, influent water volume, hydraulic retention time and wetland system arrangement. The design value for each parameter was established after pilot study. Full-scale constructed wetland on the basis of the designed values was constructed to evaluate those reasonableness. The results of this study showed that the designed values for free water surface constructed wetland were appropriate for the reduction of agricultural nonpoint source pollution.