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Estimation of Runoff Characteristics of Nonpoint Pollutant Source in Railroad Area
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 Title & Authors
Estimation of Runoff Characteristics of Nonpoint Pollutant Source in Railroad Area
Lee, Chun Sik; Seo, Gyu Tae; Yoon, Cho Hee; Kwon, Heon Gak; Lee, Jae Woon; Cheon, Se Uk;
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 Abstract
The MFFn(Mass first flush), EMCs(Event mean concentrations) and runoff loads were analyzed for various rainy events(monitoring data from 2011 to 2012) in transportation area(rail road in station). The pollutant EMCs by volume of stormwater runoff showed the BOD5 9.6 mg/L, COD 29.9 mg/L, SS 16.7 mg/L, T-N 3.271 mg/L, T-P 0.269 mg/L in the transportation areas(Railroad in station). The average pollutant loading by unit area of stormwater runoff showed the BOD5 , COD , SS , T-N and T-P in the transportation areas. Estimated NCL-curve(Normalized cumulated-curve) was evaluated by comparison with observed MFFn. MFFn was estimated by varying n-value from 10% to 90% on the rainy 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.
 Keywords
Mass first flush(MFF);Event mean concentrations(EMCs);Runoff;Rainfall;Stormwater;Normalized cumulated-curve(NCL-curve);
 Language
Korean
 Cited by
 References
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