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In this study, the reduction efficiencies of leachate heavy metal levels were investigated by adding Al 2 O 3 and CaO to the bottom ash to observe their effects on the heavy metals leachate reduction efficiency. The ratio of Al 2 O 3 and CaO contents were varied by 10~40% (W/W) alongside different curing time of 7 and 28 days. The reduction efficiencies of leachate heavy metal levels were estimated to be 69.3% for Cu and 52.1% for Pb during the curing time of 7 days. For the curing time of 28 days, the efficiencies changed to 85.2 and 100% for Cu and Pb, respectively. It was thus confirmed that the high reduc-tion efficiency could be obtained as the curing time increased. Keywords: bottom ash, stabilization/solidification, heavy metal, CaO, Al 2 O 3 1)1.                    ,      .      ,         .            “2 ”        .             .       (FA : Fly Ash) (BA : Bottom Ash) .       12~20%

A Study on the Leachate Characteristics of Heavy Metals from MSW Bottom Ash Solidified with Stabilizing Reagents