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Assessment of the Potential of Permeable Concrete using Blast Furnace Slag in Treating the Highway Side Storm Water

Anubhav Uniyal, Siby John

Abstract


Storm water from highway side contains organic and inorganic pollutants including significant amount of heavy metals which need to be treated before the storm water is let into the natural water bodies. In this study, the potential of pervious concrete using blast furnace slag was assessed for pollutants removal from the highway side storm water. Removal efficiencies in respect of nitrate, phosphate, chemical oxygen demand (COD), TSS, lead, chromium, nickel and copper were assessed. The results showed that the pervious concrete could remove 71%, 87% and 98% of nitrate, total suspended solids and oil and grease, respectively. Heavy metal removal efficiencies varied from 68% - 89% and the order of removal was observed to be Pb > Cr > Cu > Ni. After the treatment through the pervious concrete filter all the parameters were within the permissible limit for discharge into natural water bodies. The pervious concrete containing blast furnace slag could be effectively used in urban areas to reduce surface and ground water pollution due to storm water.


Keywords


highway side storm water, water pollution, pervious concrete, blast furnace slag

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References


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