| Title |
Study on Representation of Pollutants Delivery Process using Watershed Model |
| Authors |
황하선 ( Ha Sun Hwang ) ; 이한필 ( Han Pil Rhee ) ; 이성준 ( Sung Jun Lee ) ; 안기홍 ( Ki Hong Ahn ) ; 박지형 ( Ji Hyung Park ) ; 김용석 ( Yong Seok Kim ) |
| DOI |
https://doi.org/10.15681/KSWE.2016.32.6.589 |
| Keywords |
BMP Web Toolkit; Delivery ratio; HSPF; TPLC; Watershed modeling |
| Abstract |
Implemented since 2004, TPLC (Total Pollution Load Control), the most powerful water-quality protection program have been implemented since 2004. Recently, uncertainty of prediction using steady state model increased as changes of water environment, and necessity of dynamic state model, especially watershed model came to the fore on TPLC. For application of watershed model on TPLC, the adjustment of relationship (mass-balance) between discharged loads estimated by technical guidance and arrived loads based on observed data at the watershed outlet should be possible. However, HSPF perform simulation as semi-distributed model (lumped model) in a sub-basin. Therefore, if the estimated discharged loads from individual pollution source is entered into RCHRES module directly (without delivery ratio) as point source data, the pollutant load couldn`t be reduced properly in the RCHRES module until they reached the outlet of sub-basin. The hypothetic RCHRES that generated using HSPF BMP Reach Toolkit was applied to solve this problem, although it is not original usage of Reach Toolkit. And the impact of discharged load according to spatial distribution of pollution sources in a sub-basin could be expressed by multi-segmentation of hypothetic RCHRES. The discharged pollutant load through hypothetic RCHRES could be adjusted easily by modification of infiltration rate or characteristics of flow control devices. |