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Article

Modelling Water Quality Improvements in a South Korean Inter-Basin Water Transfer System

1
Center for Climate/Environment Change Prediction Research, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Korea
2
Department of Environmental Science and Engineering, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Korea
*
Author to whom correspondence should be addressed.
Water 2020, 12(11), 3173; https://doi.org/10.3390/w12113173
Received: 21 September 2020 / Revised: 11 November 2020 / Accepted: 12 November 2020 / Published: 13 November 2020
(This article belongs to the Special Issue Sustainable Development of Lakes and Reservoirs)
In this study, we investigated the feasibility of using constructed wetlands for non-point source pollution reduction. The effect of constructed wetlands in reducing suspended solids (SS) was analyzed using an integrated modeling system of watershed model (HSPF), reservoir model (CE-QUAL-W2), and stream model (EFDC) to investigate the behavior and accumulation of the pollution sources based on 2017 water quality data. The constructed wetlands significantly reduced the SS concentration by approximately 30%, and the other in-lake management practices (e.g., artificial floating islands and sedimentation basins) contributed an additional decrease of approximately 7%. Selective withdrawal decreased in the average SS concentration in the influents by ~10%; however, the effluents passing through the constructed wetlands showed only a slight difference of 1.9% in the average SS concentration. In order to meet the water quality standards, it was necessary to combine the constructed wetlands, in-lake water quality management, and selective withdrawal practices. Hence, it was determined that the model proposed herein is useful for estimating the quantitative effects of water quality management practices such as constructed wetlands, which provided practical guidelines for the application of further water quality management policies. View Full-Text
Keywords: CE-QUAL-W2; constructed wetlands; Doam Lake watershed; EFDC; HSPF; non-point source pollution control; selective withdrawal CE-QUAL-W2; constructed wetlands; Doam Lake watershed; EFDC; HSPF; non-point source pollution control; selective withdrawal
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MDPI and ACS Style

Lee, H.W.; Yeom, B.-M.; Choi, J.H. Modelling Water Quality Improvements in a South Korean Inter-Basin Water Transfer System. Water 2020, 12, 3173. https://doi.org/10.3390/w12113173

AMA Style

Lee HW, Yeom B-M, Choi JH. Modelling Water Quality Improvements in a South Korean Inter-Basin Water Transfer System. Water. 2020; 12(11):3173. https://doi.org/10.3390/w12113173

Chicago/Turabian Style

Lee, Hye W.; Yeom, Bo-Min; Choi, Jung H. 2020. "Modelling Water Quality Improvements in a South Korean Inter-Basin Water Transfer System" Water 12, no. 11: 3173. https://doi.org/10.3390/w12113173

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