A landfill is the ultimate disposal method for managing the municipal solid waste generated. Soil is the traditional material for landfill cover; the virgin soils are scarce and costly. So, waste materials like contaminated sediments, cement kiln dust, construction waste were used as an alternative for landfill cover. Sewage sludge is the waste from sewage treatment plants (STP) and its disposal is a problem in the operation of STP. A model study was conducted using sewage sludge as an alternative daily cover material (ADCM) in a bioreactor landfill. The properties of sewage sludge were modified by adding materials like fly ash, lime, coir pith and bentonite to meet the requirement of cover material. The laboratory-scale anaerobic bioreactor landfills were operated under ambient atmospheric conditions. The quantity, quality and time for the leachate generation were evaluated. The sewage sludge modified with 30 bentonite and 30 coir pith along with virgin soil was found suitable as alternative daily cover material.
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