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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
한국농공학회 한국농공학회논문집 한국농공학회논문집 제47권 제1호
발행연도
2005.1
수록면
79 - 91 (13page)

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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.
#Nonpoint sources pollution #Newly constructed wetland #Field experiment study

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참고문헌 (23)

참고문헌 신청
/ / New alternative of water purification_ constructed wetland. : 239 ~ 245 google schola / 1983 / Capacity of natural wetlands to remove nutrients from wastewater : 495 ~ 504 google schola / 1987 / Aquatic plant system for waste-water treatment engineering considerations Aquatic plants for water treatment and resource recovery tchoba (glous) : 27 ~ 48 google schola / 1988 / Denitrification in a natural wetland receiving secondary treated effluent : 431 ~ 439 google schola / 1988 / Denitrification in freshwater and coastal marine systems lim ocea (l gr) : 702 ~ 704 google schola

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