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자유수면형 인공습지에 의한 저농도 고유량의 하천수질개선 효과 분석

Anlysis of Stream Water Quality Improvement Using Surface-flow Wetland

김형철|윤춘경|함종화|구원석|신현범
한국농공학회 (The Korean Society Of Agricultural Engineers)|2005.01|한국농공학회논문집 (Journal of the Korean Society of Agricultural Engineers)|제47권 제1호|pp. 79-91

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참고문헌

주제분류농학

초록

Abstract

Wetland systems are widely accepted natural water purification systems around the world in nonpoint sources pollution control. Constructed wetlands have become a popular technology for treating contaminated surface and wastewater. In this study, the field experiment to reduce nonpoint source pollution loadings from polluted stream waters using wetland system was performed from June 2002 to March 2004, including winter performance using four newly constructed wetlands. The Dangjin stream water flowing into Seokmun estuarine lake was pumped into wetlands, and inflow and hydraulic residence time of the system was 500m3∼1500m3/day and 2∼5 days respectively. After 3 years operation plant-coverage was about 80∼90 % from zero at initial stage even with no plantation. Average water quality of the influent in growing season was BOD5 3.96mg/L, TSS 22.98 mg/L, T-N 3.29 mg/L, and T-P 0.30 mg/L. The average removal rate of four wetlands for BOD5, TSS, T-N and T-P in growing season was 24%, 62%, 54%, and 51%, respectively. And average water quality of the influent in winter season was BOD5 4.92 mg/L, TSS 12.47 mg/L, T-N 5.54 mg/L, and T-P 0.32 mg/L, respectively. The average removal rate of four wetlands for them was -21%, 23%, 33%, and 53%, respectively. The reason of higher BOD5 effluent concentration in winter season might be that low temperature restrained microorganism activity and a organic body from the withered plant and algae was flown out. Except the result of BOD5, the effectiveness of water quality improvement in winter season was satisfactory for treating polluted stream waters, and BOD5 variation was within the range of background concentration. Performance of the experimental system was compared with existing data base (NADB), and it was within the range of general system performance. Overall, the wetland system was found to be satisfactory for NPS control such as improvement of polluted stream water.

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관련 논문AI추천

인공습지의 수질개선 효과 분석모델 개발최지용한국습지학회 · 한국습지학회지2002 · 제4권 제1호인공습지를 이용한 하구담수호 유입하천수수질개선 현장실험결과 분석구원석, 김형철, 신현범, 윤춘경, 함종화한국농공학회 · 한국농공학회논문집2004 · 제46권 제5호하천수정화 근자연형 인공습지의 초기 질소제거양홍모한국환경농학회 · 한국환경농학회지2002 · 제21권 제4호하천고수부지 수질정화 자유수면인공습지의 초기운영단계 인제거양홍모한국환경농학회 · 한국환경농학회지2003 · 제22권 제4호하천고수부지 수질정화 여과습지의 초기운영단계 질소제거양홍모한국환경농학회 · 한국환경농학회지2003 · 제22권 제4호소수계 유역 인공습지에서 식생 밀도 차이에 따른 영양염류 제거 효율강항원, 고지연, 김춘송, 이재생, H.J.Bavor, K.Sakadevan한국환경농학회 · 한국환경농학회지2003 · 제22권 제4호

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