Leaching Characteristics of Resource Recovery Ash in Municipal Waste Landfills. Final Report

摘要

The purpose of this research is to evaluate trends in leachate concentrations of resource recovery ashes landfilled under mono- and codisposal conditions. Monodisposal is referred to as disposal of a resource recovery ash in a separate landfill while codiposal implies disposal of the resource recovery ash in a landfill in which untreated municipal wastes are also disposed. Leachates from four resource recovery ashes were generated using (1) distilled water as the leaching medium to simulate monodisposal conditions, and (2) municipal waste leachate (MWL) as the leaching medium to simulate codisposal of a resource recovery ash in a municipal waste landfill. The approach is to measure the concentration of potential contaminants in leachates from resource recovery ashes under field-simulated conditions. The intent is to determine if significantly greater quantities of these contaminants are leached under codisposal conditions as compared to monodisposal conditions and to decide if the contaminant concentrations in leachates of codisposed resource recovery ashes are significantly different from those in leachates from typical municipal waste landfills. 4 references, 28 figures, 35 tables. (ERA citation 10:018610)