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http://dx.doi.org/10.15681/KSWE.2011.27.4.1

Development of the Engineered Filter Media for Reducing Pollutants in Urban Runoff  

Kang, Sung Won (Water Resource & Environment Research Department, Korea Institute of Construction)
Lee, Jai Young (School of Environmental Engineering, University of Seoul)
Kim, Seog Ku (Water Resource & Environment Research Department, Korea Institute of Construction)
Publication Information
Journal of Korean Society on Water Environment / v.27, no.4, 2011 , pp. 391-396 More about this Journal
Abstract
Recently it revealed that urban runoff was one of the major source that contaminates the river, lake and estuary because it contains toxic compounds such as heavy metals and Poly Aromatic Hydrocarbons (PAHs) as well as suspended solids, organic compounds and nutrients. The engineered polymetric media in this research were developed for reducing pollutants in urban runoff and would be used to be charged in the storm water treatment equipment. The engineered media that were composed of the polypropylene was foamed to have the buoyancy and then shattered by mechanical for the efficient filtration. In this study, Spherical Expanded Polypropylene Media (SEPM), Crushed Polypropylene Media (CPM), Large Crushed Expanded Polypropylene Media (LCEPM), Small Crushed Expanded Polypropylene Media (SCEPM) were made from polypropylene. Surface characteristics of the developed media were determined by scanning electron microscopy analyses. Also, removal efficiencies of SS, $COD_{Cr}$ in the artificial road runoff and the bed headloss by media and particle pollutants captured by media were examined. Results on the surface characteristics of media indicated that SCEPM had the largest specific surface area, $0.80m^2/g$, the lowest specific gravity, 0.091, and the biggest porosity, 0.63, because of crushing the media at the process of manufacturing. And the SCEPM's removal efficiencies of TSS and $COD_{Cr}$ in the artificial road runoff were 92.9% and 83.6%, respectively and the headloss of SCEPM was the least of them.
Keywords
Buoyant media; Expanded polypropylene; Filtration; Impervious surface; Non-point source;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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