| Title |
Analysis of Behavior Characteristics of Water Pollutants in Yeongsan River Using 3D Hydraulic Model |
| Authors |
오혜연 ( Hye Yeon Oh ) ; 김은정 ( Eun Jung Kim ) ; 최정현 ( Jung Hyun Choi ) |
| DOI |
https://doi.org/10.15681/KSWE.2023.39.6.439 |
| Keywords |
Chemical spill; Environmental Fluid Dynamics Code Plus (EFDC+); Oil spill; Pollution response; Yeongsan River |
| Abstract |
The Yeongsan River, a major water resource for Jeollanam-do, that is adjacent to industrial complexes and agricultural areas, is exposed to water pollution. Therefore, it is necessary to investigate the impact of water pollution incidences and prepare response systems for river environment safety for other water resources in the future. Environmental Fluid Dynamics Code (EFDC) was applied to the mainstream of the Yeongsan River where residential, commercial, and agricultural areas are located to analyze the behavior of pollutants conducting the scenario analysis. Considering the pollutants that affected the study area, two pollutants, oil and benzene, with different physical and chemical characteristics were selected for the analysis. As a result of comparing the actual and simulated values of the water elevation, temperature, and flow rate, it was confirmed that the model adequately reproduced the hydraulic characteristics of the Yeongsan River. The oil flow dynamics showed that an increase in flow rate led to reduction in the maximum height of the slick. Notably, the behavior of the oil was predominantly influenced by the wind conditions. In the case of benzene, lower flow scenarios exhibited decreased arrival times and residence times accompanied by an elevation in the maximum concentration levels. From the results of pollutant behavior in the study area, it is feasible to utilize the section of tributary confluence for collection and the weir area for dilution. This study enhances the understanding of the pollutant’s behavior with different characteristics and develops effective control systems tailored to the physicochemical attributes of pollutants. |