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http://dx.doi.org/10.3741/JKWRA.2022.55.5.371

Assessment of water quality index suitability of domestic watersheds  

Lee, Sangung (Department of Civil and Environmental Engineering, Myongji University)
Jo, Bugeon (Department of Civil and Environmental Engineering, Myongji University)
Kim, Young Do (Department of Civil and Environmental Engineering, Myongji University)
Publication Information
Journal of Korea Water Resources Association / v.55, no.5, 2022 , pp. 371-381 More about this Journal
Abstract
Since tributaries have greater water quality variability than main streams, a comprehensive evaluation method that considers the effects of various parameters rather than one water quality parameter has been introduced for effective water quality management of tributaries, but the characteristic of the watershed is not considered. In this study, the urbanization rate, livestock excreta generation, and industrial wastewater discharge in the Hantan River middle-watershed classify urban and non-urban watersheds, and evaluate the suitability of water quality indexes by watershed characteristics by analyzing water quality characteristics and calculating CCME WQI, RTWQI, and NSFWQI. Factor analysis was used to understand the effect of water quality parameters used to calculate the water quality index on the water quality index results. As a result of the factor analysis, the relationship between CCME WQI, TC, and FC was derived, and the relationship between RTWQI and DO, SS in urban watersheds and NSFWQI and FC in non-urban watersheds was revealed. As a result of evaluating suitability through comparison with BOD and T-P grades, it was interpreted that the suitability of the water quality index was low in urban watersheds and that comprehensive water quality evaluation using RTWQI was possible in non-urban watersheds.
Keywords
Hantan river; Water quality index; Factor analysis; Suitability assessment;
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Times Cited By KSCI : 6  (Citation Analysis)
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