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http://dx.doi.org/10.3741/JKWRA.2006.39.5.405

Analysis of Estimation Technique for Solid Sediments in Combined Sewer Systems  

Lee, Jae-Soo (Dept. of Civil & Envir. Eng., Jeonju Univ.)
Publication Information
Journal of Korea Water Resources Association / v.39, no.5, 2006 , pp. 405-415 More about this Journal
Abstract
The deposition of sewer solids during dry weather in combined sewer systems results in a loss of flow capacity that may restrict flow and cause a local flooding and enhanced solids deposition. Sewer solid accumulations in drainage systems also create the 'first-flush' phenomena during wet weather runoff periods. In order to solve these problems, measurement of these loadings for a given sewer system for extended period is needed but this task is very difficult and extremely expensive. In this study, generalized procedures for estimating sewer sediment solid during dry weather in combined sewer systems developed by the U. S. Environmental Protection Agency were applied in a drainage system in Korea. As result, the appropriate equation can be selected and applied according to the available data. However, the estimated solid sediment shows considerable difference between methods which classified by model and estimation methods of variable. The estimated values using equations (1) $\sim$ (4) are greater than that of equations (5) $\sim$ (9) and intermediate models show greater values than elaborate or simplest models. The comparison between simulated and measured solid deposition is difficult due to the absent of measurement data, but this estimation method can be used usefully for the management of sewer solid with reduction of cost and effort if the measurement is carried out and the equation is adjusted according to the actual drainage systems in Korea.
Keywords
combined sewer systems; solid sediment; management of sewer solid;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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