Journal of the Korean Society of Marine Environment & Safety (해양환경안전학회지)

The Korean Society of Marine Environment and safety (해양환경안전학회)
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Modeling for Pollution Contribution Rate of Land based Load in Masan Bay

마산만 육상기인오염원의 오염기여율 모델링

  • Jung, Woo-Sung (Marine Evironmental Management Division, National Institute of Fisheries Science) ;
  • Hong, Sok-Jin (Marine Evironmental Management Division, National Institute of Fisheries Science) ;
  • Lee, Won-Chan (Marine Evironmental Management Division, National Institute of Fisheries Science) ;
  • Kim, Hyung-Chul (Marine Evironmental Management Division, National Institute of Fisheries Science) ;
  • Kim, Jin-ho (Marine Evironmental Management Division, National Institute of Fisheries Science) ;
  • Kim, Dong-Myung (Department of Ecological engineering, Pukyong National University)
  • 정우성 (국립수산과학원 어장환경과) ;
  • 홍석진 (국립수산과학원 어장환경과) ;
  • 이원찬 (국립수산과학원 어장환경과) ;
  • 김형철 (국립수산과학원 어장환경과) ;
  • 김진호 (국립수산과학원 어장환경과) ;
  • 김동명 (부경대학교 생태공학과)
  • Received : 2015.12.21
  • Accepted : 2016.02.25
  • Published : 2016.02.28
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Abstract

Pollution contribution rate that is effect on water quality from land based load in Masan bay was showed quantifiably for coastal water quality management by using ecological model. It was calculated by difference of water quality concentration at each points t hat is calculated by each scenarios that are presence or absence of each sources (16 points). Results show that, rivers of Northern Masan bay contributed in Masan bay COD is 20 %, T-P is 62 % at northern part and COD is 10 %, T-P is 16 % at middle part. As a result, rivers of Northern Masan bay had effect on water quality of northern Masan bay and middle Masan bay. Also, T-P load affects water quality bigger than COD load, because T-P contribution rate bigger than COD contribution rate of northern rivers. Dukdong WTTP that is land pollution source of southern Masan bay contributed in Masan bay COD is 26 %, T-P is 11% at middle part, COD is 17 %, T-P is 7 % at middle part and COD is 10 %, T-P is 1 % at outer part. It affects water quality bigger at southern and middle of Masan bay than outer bay, because residual flow of bottom flows toward inner of Masan bay nearby Dukdong WTTP.

해역수질 관리를 위해 마산만으로 유입되는 육상기인오염원이 해역수질에 미치는 영향인 오염기여율을 생태계 모델을 이용하여 정량화하였다. 오염기여율은 마산만 해역으로 들어오는 16개 오염원 각각의 유무에 따라 해역 정점별 수질 농도변화를 통해 계산하였다. 오염기여율 결과로 만 내측의 하천들은 만 북부에서 COD는 20 %, T-P는 62 %로 나타났고, 만 중부에서는 COD는 10 %, T-P는 16 %로 나타냈다. 따라서, 만 내측의 하천들은 마산만 북부와 중부수질에 영향을 주고 있는 것으로 나타났다. 또한, 만 북부로 유입되는 하천들의 T-P기여율이 COD기여율 보다 높기 때문에, COD부하보다 T-P부하가 수질에 미치는 영향이 더 큰 것으로 판단된다. 만 남부 오염원인 덕동하수처리장은 남부에서 COD는 26 %, T-P는 11 %, 중부에서 COD는 17 %, T-P는 7 %, 만 외측에서는 COD는 10 %, T-P는 1 % 기여하는 것으로 나타났다. 이는 저층 잔차류 흐름이 만 내측으로 향하고 있기 때문에 마산만 외측보다 남부와 중부에서 수질에 더 큰 영향을 미치고 있는 것으로 나타났다.

Keywords

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