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http://dx.doi.org/10.15681/KSWE.2014.30.6.622

The Estimation of Pollution Loads in First-flush Overflows with Various Rainfall and Regional Characteristics  

Kim, Hongtae (Watershed Pollution Load Management Research Division, National Institute of Environmental Research)
Shin, Dongseok (Watershed Pollution Load Management Research Division, National Institute of Environmental Research)
Kim, Yongseok (Watershed Pollution Load Management Research Division, National Institute of Environmental Research)
Publication Information
Journal of Korean Society on Water Environment / v.30, no.6, 2014 , pp. 622-631 More about this Journal
Abstract
The purpose of this research was to find a proper disposal rainfall extent to improve water quality. SWMM was applied to select catchment area and tested first flush load and rainfall extent. BOD 40mg/L was selected to dispose the first flush and sewer overflow with the same as the criteria of Sewerage Act. Design rainfall, BOD load ratio of first flush sewer overflow, and the ratio of disposal flow were analyzed under various rainfall distribution. BOD load and design rainfall to treat overflow in situation of first flush extent with 4.3~17.4% were 56~87% and 3.8~6.8 mm/day, respectively. In urban area, first flush loads were not correspond to land activities, but tend to increase with increasing rainfall amount and drainage area. The more the distribution of rainfall is similar to Huff-frontal or central distribution of rainfall, the more increase the first flush loads.
Keywords
first flush; sewer overflow; SWMM; water quality;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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