| Title |
Analysis of Efficiency of Pollution Reduction Scenarios by Flow Regime Using SWAT Model - A case study for Dalcheon Basin - |
| Authors |
김수홍 ( Soohong Kim ) ; 홍지영 ( Jiyeong Hong ) ; 박운지 ( Woonji Park ) ; 김종건 ( Jonggun Kim ) ; 임경재 ( Kyoungjae Lim ) |
| DOI |
https://doi.org/10.15681/KSWE.2021.37.6.469 |
| Keywords |
Flow regime; Non-point pollutant; Reduction efficiency; SWAT |
| Abstract |
The recent climate change and urbanization have seen an increase in runoff and pollutant loads, and consequently significant negative water pollution. The characteristics of the pollutant loads vary among the different flow regime depending on their source and transport mechanism, However, pollutant load reduction based on flow regime perspectives has not been investigated thoroughly. Therefore, it is necessary to analyze the effects of concentration on pollutant load characteristics and reductions from each flow regime to develop efficient pollution management. As non-point pollutants continuously increase due to the increase in impervious area, efficient management is necessary. Therefore, in this study, 1) the characteristics of pollutant sources were analyzed at the Dalcheon Basin, 2) reduction of nonpoint pollution, and 3) reduction efficiency for flow regimes were analyzed. By analyzing the characteristics of the Dalcheon Basin, a reduction efficiency scenario for each pollutant source was constructed. The efficiency analysis showed 0.06% to 5.62% for the living scenario, 0.09 to 24.62% for the livestock scenario, 0.17% to 12.81% for the industry scenario, 9.45% to 38.45% for the land scenario, and 9.8% to 39.2% for the composite scenario. Therefore, various pollution reduction scenarios, taking into account the characteristics of pollutants and flow regime characteristics, can contribute to the development of efficient measurements to improve water quality at various flow regime perspectives in the Dalcheon Basin. |