Pilot 규모 연속배열형 인공습지의 영양염류 제거효능 규명 및 평가모델 연구

Abstract

A pilot study was performed to examine the feasibility of multiple stage of constructed wetland (CW) for nutrient removal. The system is composed of six wetland cells connected with water-ways. The hydraulic of wetland cells is designed as free water surface flow. The treatment capacity was 25 m3 d-1 at HRT of about one day for each cell. The magnitude of nutrient removal was related with the length of wetlands and plant density. Total N and P removal rates were 1353 and 246 mg m-2 d-1, respectively. The pilot-scale reactor was model as continuous flow system containing contribution of CSTR and PFR typed-reactors. The k-C* model equation was applied to predict N and P reduction. The result indicated the equation was well guided to estimate reduction of NO3-N and PO4-P.