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이춘식 ( Chun Sik Lee ),서규태 ( Gyu Tae Seo ),윤조희 ( Cho Hee Yoon ),권헌각 ( Heon Gak Kwon ),이재운 ( Jae Woon Lee ),천세억 ( Se Uk Cheon ) 한국환경과학회 2014 한국환경과학회지 Vol.23 No.3
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 storm water runoff showed the BOD5 9.6 ㎎/L, COD 29.9 ㎎/L, SS 16.7 ㎎/L, T-N 3.271 ㎎/L, T-P 0.269 ㎎/L in the transportation areas(Railroad in station). The average pollutant loading by unit area of storm water runoff showed the BOD5 27.26 kg/㎢, COD 92.55 kg/㎢, SS 50.35 kg/㎢, T-N 10.13 kg/㎢ and T-P 10.13 kg/㎢ 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.
이재운 ( Jae Woon Lee ),이윤정 ( Youn Jeong Yi ),권헌각 ( Hun Gak Kwon ),윤종수 ( Jong Su Yoon ),이춘식 ( Chun Sik Lee ),천세억 ( Se Uk Cheon ) 한국환경과학회 2012 한국환경과학회지 Vol.21 No.8
This study analyzed the characteristics of stormwater runoff by rainfall type in orchard areas and transportation areas for 2 years (2010~2011year). Effluents were monitored to calculate the Event Mean Concentrations (EMCs) and runoff loads of each pollutant. The pollutant EMCs by volume of stormwater runoff showed the ranges of BOD 0.9~13.6 ㎎/L, COD 13.7~45.2 ㎎/L, SS 4.1~236.4 ㎎/L, T-N 2.123~21.111 ㎎/L, T-P 0.495~2.214 ㎎/L in the orchard areas, and was calculated as BOD 2.3~22.5㎎ /L, COD 4.4~91.1 ㎎/L, SS 4.3~138.3 ㎎/L, T-N 0.700~13.500 ㎎/L, T-P 0.082~1.345 ㎎/L in the transportation areas. The correlation coefficient of determination in the orchard area was investigated in the order of Total Rainfall (0.81) > Total Runoff (0.76) > Rainfall Intensity (0.56) > Rainfall Duration (0.46) > Antecedent Dry Days (0.27). Also, in the case of the transportation area was investigated in the order of Total Rainfall (0.55) > Total Runoff (0.54) > Rainfall Intensity (0.53) > Rainfall Duration (0.24) > Antecedent Dry Days (0.14). As the result, comparing valuables relating to runoff of non-pollutant source between orchard areas and transportation areas, orchard area(R2 ≥ 0.5: X3, X4, X5) was investigated to have more influence of diverse independent valuables compared to the transportation area(R2 ≥ 0.5: X3, X4) and the difference of discharge influence factor by the land characteristics appeared apparently.