Volume No. 11 Issue No.: 3 Page No.: 471-481 January-March 2017
A STUDY ON THE EFFECT OF LANDFILL LEACHATE- POLLUTION ON GROUND WATER AND SURFACE WATER QUALITY AND LEACHATE TREATMENT WITH ACTIVATED CARBON ADSORBENT
Hemangi D.* and Payal G.
Department of Environmental Science, Shree Ramkrishna Institute of Computer Education and Applied Science, Surat (INDIA)
Received on : December 1, 2016
Leachate generation is a major problem for municipal solid waste (MSW) landfills and causes significant threat to surface water and groundwater. Leachate can be defined as a liquid that passes through a landfill and has extracted dissolved and suspended matter from it. Leachate results from precipitation entering the landfill from moisture that exists in the waste when it is composed. Leachate is characterised by high COD, Chloride, pH, Pathogens etc. Such leachate sample is to be treated with natural and chemical adsorbent and/or coagulants and then tests are to be carried out to check the leachate characteristics like Alkalinity, COD, Chloride, Hardness, Iron, Oil-grease, Turbidity and Total solids etc. The adsorbent used were Activated carbon, Perlite soil (act as an accelerating agent). Activated carbon are to be used are prepared by mixture of bagasse and rice husk. Perlite soil is a natural and easily available adsorbent. It shows less removal of Turbidity, Hardness and COD as compared to Activated carbon. The decrease in turbidity referred to the decrease in suspended solids and this is due to the sedimentation of these particles after equalizing its ions. The equalizing ions come to the bottom by gravity under the force of their own weight. By the combination of Perlite soil with Activated carbon, reduction is obtained but it reduces less compared to Activated carbon and perlite soil alone. The increase in dosage causes the increase in removal capacity of parameters.
Keywords : Leachate, Suspended, Removal, Coagulant, Municipal solid waste