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Effect for CSOs Storage Construction - Analysis of Storm Water Run-off Characteristics in combined sewer system  

Park, Jin-Kyu (안양대학교 환경공학과)
Lee, Nam-Hoon (안양대학교 환경공학과)
Kim, Hae-Ryong (한국환경공단 환경시설본부)
Lee, Woong (한국환경공단 환경시설본부)
Lee, Chae-Young (수원대학교 토목공학과)
Publication Information
Journal of Korean Society of Water and Wastewater / v.25, no.6, 2011 , pp. 949-957 More about this Journal
Abstract
This aim of study was to investigate the characteristics of discharge of pollutants as well as the correlation between flow rate and water quality constituents in a combined sewer system according to the characteristics of rainfall. For the loading rates for each pollutant, the median concentrations of all pollutants except T-N was increased when a CSO took place. The loading rates of BOD, COD, SS, T-N, T-P, Cu and Zn at the CSOs were 328-1255, 25-129, 83-2009, 4-12, 14-51, 5-11 and 5-13 times higher than the DWF (Dry Whether Flow), respectively. Especially, SS loading rate was found to be highest in all pollutants. On the other hand, the range of the first flush coefficient, b for water quality constituents such as BOD, COD, SS, T-N, T-P, Cu and Zn were 0.537-0.878, 0.589-0.888, 0.516-1.062, 0.852-1.031, 0.649-0.954, 0.975-1.015 and 0.900-1.114, respectively. In term of correlation between flow rate and pollutant concentrations, SS concentration was highly correlated to flow rate. However, there was an inverse correlation between EC (Electrical Conductivity) and flow rate because of the high dilution of flow rate. In case of correlation between pollutants, there was a high correlation between SS and T-P.
Keywords
Combined sewer overflows; Correlation; Electrical Conductivity; Event mean concentration; First flush;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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