Study On The Efficiency Of Low Cost Permeable Barrier Materials To Treat Leachate Contaminated Groundwater And Soil

Abstract

newline Landfill is the oldest and universal method for waste disposal and it is a major threat to groundwater. Wastes in landfills find their way to groundwater by gradually releasing its interstitial water and more leachate along with rain water. Leachate is the liquid that drains from the landfills and contains organic and inorganic compounds. The leachate accumulated in the landfill bed percolates into the soil. The study area Periyaaeri/eri, is on the eastern side of railway track from Pallavarm to Chromepet, Chennai, Tamil Nadu and 13 km from Bay of Bengal. newline newlineThis research also looked at the Leachate Pollution Index, a numerical index to evaluate landfill leachate pollution potential. The investigations revealed that the treated leachate had a higher LPI value of 15.325 than the normal LPI value of 6.405 for disposal into land in India, indicating that the Periyaaeri/eri landfill was heavily contaminated. newline newlineThis study investigated the adverse effects of physicochemical parameters of groundwater due to impact of solid waste disposal in landfill/dumpsite. Samples were collected from both open wells and newline newline newlinebore wells near Periyaaeri/eri landfill at Chromepet and the analysed. The groundwater was highly polluted in comparison with the range of concentration based on literature studies and moderately polluted with the observations of regular monitoring wells of SGandSWRDC and field observations. There is gradual improvement in groundwater quality as it is a closed dumpsite, but frequent monitoring is needed. newline newlineTo assess the suitability of water for domestic use, 20 groundwater samples were collected in the pre-monsoon and post- monsoon seasons. Parameters were compared to the standard permissible limits according to WHO and BIS which indicated that the vast majority of the samples were not potable. Spatial and seasonal variations in groundwater qualities for various parameters were prepared using Arc-GIS to elucidate the groundwater quality. Graphical and statis