화학공학소재연구정보센터
Applied Chemistry for Engineering, Vol.26, No.6, 692-697, December, 2015
안정화제를 첨가한 생활폐기물 소각시설 바닥재의 중금속 용출특성에 관한 연구
A Study on the Leachate Characteristics of Heavy Metals from MSW Bottom Ash Solidified with Stabilizing Reagents
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초록
본 연구에서는 바닥재에 CaO와 Al2O3를 중량비로 각각 10~40% (W/W)로 첨가 후 7일 및 28일을 양생시킨 다음 중금속 용출 저감 효율에 대한 영향 등을 연구하였다. 실험결과, 7일 양생 기간에서는 구리 69.3%, 납 52.1%의 중금속 저감효율을 보였다. 28일 양생 시에는 구리 85.2%, 납 100% 제거 효율을 보였다. 위 실험결과 양생 시간이 길어질수록 높은 중금속 저감 효율을 보이는 것을 확인할 수 있었다.
In this study, the reduction efficiencies of leachate heavy metal levels were investigated by adding Al2O3 and CaO to the bottom ash to observe their effects on the heavy metals leachate reduction efficiency. The ratio of Al2O3 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 reduction efficiency could be obtained as the curing time increased.
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