대한환경공학회지 (Journal of Korean Society of Environmental Engineers)

  • 제37권11호
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  • Pages.631-635
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  • 2015
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  • 1225-5025(pISSN)
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  • 2383-7810(eISSN)
대한환경공학회 (Korean Society of Environmental Engineers)
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국내 중소형 저수지 활용을 위한 수질 분석

Water Quality Monitoring in Small/Medium Sized Reservoirs

  • 임명희 (여수화학재난합동방재센터) ;
  • 이원태 (금오공과대학교 환경공학과) ;
  • 손영규 (금오공과대학교 환경공학과)
  • Lim, Myunghee (Yeosu Joint Inter Agency Chemical Emergency Preparedness Center) ;
  • Lee, Wontae (Department of Environmental Engineering, Kumoh National Institute of Technology) ;
  • Son, Younggyu (Department of Environmental Engineering, Kumoh National Institute of Technology)
  • 투고 : 2015.11.05
  • 심사 : 2015.11.30
  • 발행 : 2015.11.30
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초록

체계적인 관리가 이루어지지 않고 있는 중소형 저수지의 향후 적극적 활용을 위한 예비 연구로 A시의 중소형 저수지 33개에 대한 현장조사 및 수질자료 분석이 수행되었다. 여름철(6월)과 가을/겨울철(11월) 2차례에 걸쳐 지자체 관리의 21개 저수지에 대한 수질 분석이 이루어졌으며, 한국농어촌공사 관리의 12개 저수지의 수질자료를 확보하여 비교 분석하였다. 2차례의 수질 분석 수행 결과, 일부 중소형 저수지의 수질이 현행 이용목적인 농업용수 공급이 가능한 "약간나쁨(IV)" 수준에 미치지 못하는 것으로 확인되었으며, 저수용량이 감소하는 가을/겨울철에 수질악화가 대부분의 저수지에서 발생하는 것으로 나타났다. 이로 인해 한국형 부영양화지수에 의한 부영양화 상태가 대부분의 저수지에서 "부영양" 혹은 "과영양" 상태인 것으로 확인되었다. 도심지와의 접근성이 높은 일부 저수지의 퇴적토 분석 결과 오염도는 심각하지 않은 것으로 나타났으며, 수질과의 연관성은 높지 않았다. 이상의 결과는 중소형 저수지에 대한 대체 수자원, 관광사업, 내수면어업, 신재생에너지 생산, 홍수저감을 위한 저류지 등으로의 활용에 대한 기초자료로 이용될 수 있을 것으로 예상되었다.

Water quality investigation was conducted for small/medium sized reservoirs in A city in June and November 2014 as a preliminary step for further use. Water quality analysis experiments were conducted for 21 reservoirs managed by a local government and water quality data were obtained from Korea Rural Community Corporation for 12 reservoirs. It was found that relatively poor water quality, not satisfied with the regulation level (somewhat poor(IV)) for agricultural use, was observed for some reservoirs and worse water quality (poor(V) and very poor(VI) grade) was observed for more reservoirs during autumn /winter season due to the decrease in water volume. Correspondingly, the trophic state was obtained as "Eutrophic" or "Hypertrophic" using the Korean trophic state index for most reservoirs. It was also revealed that significant contamination in sediments was not observed for selected 8 reservoirs considering water quality in each reservoir. The results in this study could be useful for the use of small/medium sized reservoirs as alternative water resources, tourism resources, inland fishery resources, renewable energy production sites, and anti-flooding reservoirs.

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참고문헌

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