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학술저널
저자정보
박성천 ((주)상원 부설연구소) 김종오 (목포대학교) 이우범 (전남대학교) 박수호 (전남대학교) 이상득 (에스엠소프트웨어)
저널정보
한국수처리학회 한국수처리학회지 한국수처리학회지 제25권 제6호
발행연도
2017.1
수록면
3 - 15 (13page)

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ISixteen large-sized weirs were constructed to secure water resources through the Four Main River Project in 2012 as a drought-related strategy and two of the weirs, Seungchon-bo and Juksan-bo, were built in the Yeoungsan River basin. Due to the construction of the weirs, streamflows significantly decreased and stagnant area of water increased. Algal blooms are continuously occurring from summer to early fall every year. Based on the recent concerns of people about safe agricultural products, the agricultural water quality pollution becomes a nationwide issue. Its importance and significance are getting more attention and improvement of algal blooms in the Yeoungsan River with water quality improvement is crucial. Therefore, the present study used the Korean trophic state index evaluation method developed by National Institute of Environmental Research (NIER), Ministry of Environment in order to understand the change of eutrophication caused by the construction of Seungchon-bo and Juksan-bo, and the operation of total phosphorus treatment facility in Gwangju Metropolitan City. For the evaluation, the data collected from 12 main gage stations in streams and 8 measurement points in four lakes in the Yeoungsan River basin were divided into spring (March to May), summer (June to August), autumn (September to November), and winter (December to February). The divided data were again split into before and after 2013 to assess impacts of the Four Main River Project. The present study calculated seasonal TSI_Ko using water quality parameters of COD, T-P, and Chl-a and revealed characteristics of eutrophication by classifying trophic states into four levels.

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