Journal of Wetlands Research (한국습지학회지)

Korean Wetlands Society (한국습지학회)
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Assessment of tributary water quality using integrated Water Quality Index

통합수질지수를 이용한 지류지천 수질평가

  • Kal, Byungseok (Daon Solution co., Ltd.) ;
  • Park, Jaebeom (Daon Solution co., Ltd.) ;
  • Kim, Sanghun (Nakdong River Environment Research Center, National Institute of Environmental Research) ;
  • Im, Taehyo (Nakdong River Environment Research Center, National Institute of Environmental Research)
  • 갈병석 ((주)다온솔루션) ;
  • 박재범 ((주)다온솔루션) ;
  • 김상훈 (국립환경과학원 낙동강물환경연구소) ;
  • 임태효 (국립환경과학원 낙동강물환경연구소)
  • Received : 2017.07.28
  • Accepted : 2017.08.07
  • Published : 2017.08.31
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Abstract

In this study, the water quality index was calculated using the water quality monitoring data in the Nakdong River water system and the water quality status was compared with the living standard. The water quality index was selected by the RWQI method CCME-WQI currently used by the Ministry of Environment. The water quality items were selected as 7 items for pH, DO, EC, water temperature, TOC, T-N and T-P. The evaluation period was selected from the last three years (2013~2015) and water quality monitoring data measured within the period were used. As a result of the evaluation, the results of the previous evaluation showed similar tendency to the index of living environment, but the monthly evaluation showed different BOD and T-P results. Therefore, it is concluded that it is more reliable that more complex evaluation than single water quality evaluation is needed for efficient river management.

본 연구에서는 낙동강수계에서의 수질 모니터링 자료를 이용하여 수질지수를 산정하고 생활환경기준과 비교를 통해 수질상태를 검토하였다. 수질지수는 환경부에서 현재 시행되고 있는 실시간수질지수(RWQI) 방법인 CCME-WQI을 사용하였으며 수질항목은 pH, DO, EC, 수온, TOC, T-N, T-P에 대해 7개 평가항목으로 선정하였다. 평가기간은 최근 3년간(2013년~2015년)으로 선정하였으며 해당 기간 내 측정된 수질 모니터링 자료를 이용하였다. 평가결과, 전 기간 평가 결과는 지수와 생활환경기준이 비슷한 경향을 보이나 월별 평가는 지수와 BOD, T-P 결과가 다르게 나타났다. 따라서 효율적인 하천관리를 위해서는 단일 수질항목만의 평가보다 복합적인 평가가 보다 필요할 것으로 신뢰성이 있는 것으로 검토되었다.

Keywords

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