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http://dx.doi.org/10.15681/KSWE.2011.27.5.6

The Applicability for Estimating MFFn by SWMM in The Trunk Road  

Kwon, Hun-Gak (Nakdong River Water Environment Research Center, National Institute of Environmental Research)
Lee, Jae-Woon (Nakdong River Water Environment Research Center, National Institute of Environmental Research)
Yi, Youn-Jeong (Nakdong River Water Environment Research Center, National Institute of Environmental Research)
Yoon, Young-Sam (National Institute of Environmental Research)
Lee, Chun-Sik (Department of Environmental Engineering, Kyeongnam National University of Science and Technology)
Lee, Jae-Kwan (Nakdong River Water Environment Research Center, National Institute of Environmental Research)
Publication Information
Journal of Korean Society on Water Environment / v.27, no.5, 2011 , pp. 605-616 More about this Journal
Abstract
The first flush phenomenon and the Mass First Flush (MFFn) were analyzed for various rainy events in trunk road. Applicability for estimate MFFn using SWMM was evaluated by comparision with observed MFFn. First flush phenomenon was investigated by normalized cumulated (NCL) curve of every pollutant based on ten times of rainfall events monitoring data from 2008 to 2009. As a result, magnitude of first flush phenomenon varied with the pollutants and rainfall events. First flush phenomenon was detected highly in the trunk road. MFFn was estimated by varying n-value from 10 to 90% on the rainfall events. The n-value increases, MFFn is closed to '1'. As time passed, the rainfall runoff was getting similar to ratio of pollutants accumulation. The result of a measure of the strength of the linear relationship between observed data and expected data under model was good ($R^2$=0.956). As the final outcome, we have good reliability, estimation and application of MFFn using model seem statistically possible.
Keywords
First flush phenomenon; Mass first flush (MFFn); SWMM; Trunk road;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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