한국토양비료학회지 (Korean Journal of Soil Science and Fertilizer)

  • 제45권4호
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  • Pages.642-648
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  • 2012
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  • 0367-6315(pISSN)
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  • 2288-2162(eISSN)
한국토양비료학회 (Korean Society of Soil Science and Fertilizer)
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비점오염원 저감을 위한 죽산천 인공습지의 오염물질 정화효율 평가

Evaluation of Treatment Efficencies of Pollutants in Juksancheon Constructed Wetlands for Treating Non-point Source Pollution

  • 최익원 (순천대학교 생물환경학과) ;
  • 서동철 (순천대학교 생물환경학과) ;
  • 강세원 (순천대학교 생물환경학과) ;
  • 이상규 (순천대학교 생물환경학과) ;
  • 서영진 (순천대학교 생물환경학과) ;
  • 임병진 (국립환경과학원 영산강 물환경연구소) ;
  • 박종환 (국립환경과학원 영산강 물환경연구소) ;
  • 김갑순 (국립환경과학원 영산강 물환경연구소) ;
  • 허종수 (경상대학교 응용생명과학부(BK21 농업생명산업 글로벌 인재 육성 사업단) & 농업생명과학원) ;
  • 조주식 (순천대학교 생물환경학과)
  • Choi, Ik-Won (Department of Bio-Environmental Sciences, Sunchon National University) ;
  • Seo, Dong-Cheol (Department of Bio-Environmental Sciences, Sunchon National University) ;
  • Kang, Se-Won (Department of Bio-Environmental Sciences, Sunchon National University) ;
  • Lee, Sang-Gyu (Department of Bio-Environmental Sciences, Sunchon National University) ;
  • Seo, Young-Jin (Department of Bio-Environmental Sciences, Sunchon National University) ;
  • Lim, Byung-Jin (Yeongsan River Environmental Research Center) ;
  • Park, Jong-Hwan (Yeongsan River Environmental Research Center) ;
  • Kim, Kap-Soon (Yeongsan River Environmental Research Center) ;
  • Heo, Jong-Soo (Division of Applied Life Science (BK21 program) & Institute of Agriculture and Life Science, Gyeongsang National University) ;
  • Cho, Ju-Sik (Department of Bio-Environmental Sciences, Sunchon National University)
  • 투고 : 2012.07.19
  • 심사 : 2012.08.17
  • 발행 : 2012.08.31
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초록

주암호 상수원 상류지역인 죽산천에 위치한 죽산천 인공 습지의 수생태학적 특성을 평가하기 위해 수질에서의 영양 염류 처리효율, 수생식물의 무기성분 흡수량 및 퇴적물내 화학적 특성을 평가하였다. 수질에서의 영양염류 처리효율은 COD와 SS를 제외하고 전반적으로 낮았다. 죽산천 인공 습지의 주요 우점종의 영양염류 흡수량을 조사한 결과, T-N 및 T-P 흡수량은 8월에 노랑꽃창포 > 수련 > 노랑어리 연꽃 순으로 최대흡수량을 나타내었다. 퇴적물내 O.M 함량은 시기별로 큰 차이가 없었고, T-N 및 T-P의 함량은 봄에서 여름으로 시기가 변함에 따라 낮아져서 겨울까지 낮은 함량을 유지하였다. 퇴적물내 microbial biomass C:N:P의 비율은 봄, 여름, 가을 및 겨울이 각각 117~140:1~4:1, 86~126:5~6:1, 68~101:2~6:1 및 47~138:2~4:1로 나타났다. 죽산천 인공습지는 질소와 인의 처리효율이 낮고, 겨울철 수질 정화효율이 낮아 습지의 정화효율 향상을 위한 개선이 필요할 것으로 판단된다.

To evaluate the water quality in Juksancheon constructed wetlands for treating non-point source pollution, the removal rates of nutrients in water and the total amounts of T-N and T-P uptakes by water plants were investigated. Chemical characteristics of T-N and T-P in sediment were investigated. The concentrations of BOD (Biochemical Oxygen Demand), COD (Chemical Oxygen Demand), SS (Suspended Solids), T-N and T-P in inflow were 0.07~1.47, 0.60~2.65, 0.50~4.60, 1.38~6.26 and $0.08{\sim}0.32mg\;L^{-1}$, respectively. The removal rates of BOD, COD, SS, T-N, and T-P were -10, 51, 66, -3 and 5%, respectively. The maximum amount of T-N uptake by water plants in August was $368.7mg\;plant^{-1}$ in the $2^{nd}$ treatment stage by Nymphoides peltata, $1314.6mg\;plant^{-1}$ in the $3^{rd}$ treatment stage by Iris pseudacorus, $1160.4mg\;plant^{-1}$ in the $4^{th}$ treatment stage by Nymphaea tetragona GEORGI, respectively. The maximum amount of T-P uptake by water plants in August was $121.7mg\;plant^{-1}$ by Nymphoides peltata in the $2^{nd}$ treatment stage, $268.7mg\;plant^{-1}$ by Iris pseudacorus in the $3^{rd}$ treatment stage and $212.0mg\;plant^{-1}$ by Nymphaea tetragona GEORGI in the $4^{th}$ treatment stage, respectively. Organic matter contents in sediments were not different. Contents of T-N and T-P in sediments were higher in spring. Microbial biomass C:N:P ratios in sediments in spring, summer, autumn and winter were 117~140:1~4:1, 86~126:5~6:1, 68~101:2~6:1 and 47~138:2~4:1, respectively. We could conclude that Juksancheon constructed wetlands show high removal efficiencies of COD and SS. However, improvements of management in winter season should be considered to improve the removal efficiencies of pollutants.

키워드

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