Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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A Study on the Leachate Characteristics of Heavy Metals from MSW Bottom Ash Solidified with Stabilizing Reagents

안정화제를 첨가한 생활폐기물 소각시설 바닥재의 중금속 용출특성에 관한 연구

  • Lim, Jong-Wan (School of Environmental Engineering, University of Seoul) ;
  • Dong, Jong-In (School of Environmental Engineering, University of Seoul)
  • 임종완 (서울시립대학교 환경공학부) ;
  • 동종인 (서울시립대학교 환경공학부)
  • Received : 2015.09.04
  • Accepted : 2015.10.19
  • Published : 2015.12.10
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Abstract

In this study, the reduction efficiencies of leachate heavy metal levels were investigated by adding $Al_2O_3$ and CaO to the bottom ash to observe their effects on the heavy metals leachate reduction efficiency. The ratio of $Al_2O_3$ 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 reduction efficiency could be obtained as the curing time increased.

본 연구에서는 바닥재에 CaO와 $Al_2O_3$를 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 저감 효율을 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.

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References

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