한국물환경학회지 (Journal of Korean Society on Water Environment)

  • 제37권6호
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  • Pages.531-538
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  • 2021
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  • 2289-0971(pISSN)
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  • 2289-098X(eISSN)
한국물환경학회 (Korean Society on Water Environment)
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광학특성을 가진 수질변수를 활용한 하구 담수호 내 TOC 농도 추정

Estimating TOC Concentrations Using an Optically-Active Water Quality Factors in Estuarine Reservoirs

  • 김진욱 (건국대학교 사회환경플랜트공학과) ;
  • 장원진 (건국대학교 사회환경플랜트공학과) ;
  • 신재기 (한국수자원공사) ;
  • 강의태 (한국농어촌공사 농어촌연구원) ;
  • 김진휘 (건국대학교 사회환경플랜트공학과) ;
  • 박용은 (건국대학교 사회환경공학부) ;
  • 김성준 (건국대학교 사회환경공학부)
  • Kim, Jinuk (Department of Civil, Environmental and Plant Engineering, Konkuk University) ;
  • Jang, Wonjin (Department of Civil, Environmental and Plant Engineering, Konkuk University) ;
  • Shin, Jaeki (Korea Water Resources Corporation (K-water)) ;
  • Kang, Euntae (Korea Rural Community Corporation, Rural Research Institute) ;
  • Kim, Jinhwi (Department of Civil, Environmental and Plant Engineering, Konkuk University) ;
  • Park, Yongeun (School of Civil, Environmental Engineering, Konkuk University) ;
  • Kim, Seongjoon (School of Civil, Environmental Engineering, Konkuk University)
  • 투고 : 2021.09.16
  • 심사 : 2021.11.26
  • 발행 : 2021.11.30
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초록

In this study, the TOC in six estuarine reservoirs in the West Sea (Ganwol, Namyang, Daeho, Bunam, Sapkyo, and Asan) was estimated using optically-active water quality factors by the water environment monitoring network. First, specification data and land use maps of each estuarine reservoir were collected. Subsequently, water quality data from 2013 to 2020 were collected. The data comprised of 11 parameters: pH, dissolved oxygen, BOD, COD, suspended solids (SS), total nitrogen, total phosphorus, water temperature, electrical conductivity, total coliforms, and chlorophyll-a (Chl-a). The TOC in the estuarine reservoirs was 4.9~7.0 mg/L, with the highest TOC of 7.0 mg/L observed at the Namyang reservoir, which has a low shape coefficient and high drainage density. The correlation of TOC with water quality factors was also analyzed, and the correlation coefficients of Chl-a and SS were 0.28 and 0.19, respectively, while the correlation coefficients of these factors in the Namyang reservoir were 0.42 and 0.27, respectively. To improve the estimation of TOC using Chl-a and SS, the TOC was averaged in 5 mg/L units, and Chl-a and SS were averaged. Correlation analysis was then performed and the R2 of Chl-a-TOC was 0.73. The R2 of SS-TOC was 0.73 with a non-linear relationship. TOC had a significant non-linear relationship with Chl-a and SS. However, the relationship should be assessed in terms of the spatial and temporal variations to construct a reliable remote sensing system.

키워드

과제정보

본 결과물은 농림축산식품부의 재원으로 농림식품기술기획평가원의 농업기반및재해대응기술개발사업의 지원을 받아 연구되었음(320049-5). 이에 감사드립니다.

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