Performance Evaluation of Laterite Soil and Geo Textile Material for Media Based Stormwater Filtration System
Journal Title: International Journal of Research in Chemistry and Environment (IJRCE) - Year 2012, Vol 2, Issue 4
Abstract
Urban stormwater runoff carries sediment and contaminants from impervious layers like streets, pavements etc. Stormwater reaching out into the surrounding clean water increases the concentrations of turbidity, suspended solids concentration, and other water quality parameter. The conventional method to remove the pollutants from water is to pass it through the porous filter media. The common porous media are sand, char coal, anthracite, activated carbon, etc. The Laterite soil is one such naturally available porous media from which the pollutants will be removed due to its porous and permeable nature, adsorption and ion exchange capacity. Geo-textile is synthetic material having high water permeability which helps in removal of larger suspended particles, oil and grease. The present research work is focused on performance evaluation of Laterite soil as single filter media and Laterite-Geo Textile as dual filter media for treating urban runoff water. This is a novel technique for reclamation of urban stormwater runoff and groundwater recharge. Residential pavement and Mechanical shop pavement flush water is used as an artificial urban stromwater runoff sample. Laterite media and Laterite-Geo Textile media were efficient in reducing turbidity by 90% and 92% at 25mL/min flow rate respectively for residential pavement runoff water. Similarly Total hardness, Nitrate, Iron and Fluoride was as also significantly reduced in both the runoff water. Laterite media and Laterite Geo textile media proved to be effective in removal of the considered parameters.
Authors and Affiliations
Madhukar M. , Chethan G. , Priyanka T. , Ashwin S. , Sowmya S. , Surya
Keywords
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