Leachate Properties of the Stabilized MSW Incineration APC Residues in Pilot-Scale Mono-landfill

The dramatic development of municipal solid waste (MSW) incineration recently has brought a surge in the generation of air pollution control (APC) residues, a kind of hazardous waste. Landfilling after stabilization of APC residues plays an essential role in the hazardous waste management. Few studies have focused on the leachate quality of mono-landfills for stabilized APC residues in China. This investigation concentrates on simulating monolandfills by percolation leaching tests in a pilot scale, the leachate quality data from which could offer fundamental basis both for the design of mono-landfill sites (if leachate would be generated) and chemical stabilization processes. Moreover, granulation of the stabilized APC residues could offer a fairly better working condition for transportation and landfilling operation; thus, another purpose of this work is to analyse the leaching behaviour of contaminants and tentatively conclude the effect of granulation on the leachate characteristics of stabilized APC residues in mono-landfill site. Three models were used to describe the leaching rate of the specific contaminants in landfill sites.