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A study on influencing factors of AT4 experiment for the assessment of biological stability of landfilled waste

매립폐기물의 호기성 안정화 평가를 위한 AT4 실험의 영향인자에 관한 연구

  • Yoon, Seok-Pyo (Department of Environmental Engineering, Semyung University) ;
  • Kim, Hyung-Wook (Department of Environmental Engineering, Semyung University) ;
  • Lee, Nam-Hoon (Department of Environmental Engineering, Anyang University) ;
  • Kim, Kyung (Department of Environmental Engineering, Anyang University) ;
  • Lee, Byung-Sun (Forcebel Co.Ltd.)
  • 윤석표 (세명대학교 바이오환경공학과) ;
  • 김형욱 (세명대학교 바이오환경공학과) ;
  • 이남훈 (안양대학교 환경공학과) ;
  • 김경 (안양대학교 환경공학과) ;
  • 이병선 ((주)포스벨)
  • Received : 2011.11.19
  • Accepted : 2011.12.27
  • Published : 2011.12.31

Abstract

In this study, as a tool of evaluating biological stability of landfilled waste, influencing factors of $AT_4$ method was studied for standardizing the method. As influencing factors, initial lag time, exchanging period of $CO_2$ absorbing agent, and interval of pressure measurement were discussed, and also the relationship between content of dried food waste and $AT_4$ value were compared. Considering heterogeneity of landfilled waste and statistical error range of measurement, authors suggest that the criteria of stabilized landfill waste is $10mg\;O_2/g\;DM$ by $AT_4$ method.

본 연구에서는 $AT_4$ 방법으로 매립 폐기물의 생물학적 안정화도를 평가하는데 있어서, 실험자가 상이함에 따라 결과가 달라지는 것을 방지하기 위해 표준화된 실험을 위한 실험조건을 제시하고자 하였다. $AT_4$ 실험에 있어서 초기 지연시간, $CO_2$ 흡수제의 교체시기, 산소소모량 측정주기, 유기성 폐기물 함량에 따른 $AT_4$ 측정값 변화 추이등을 살펴보고, 각각에 따른 영향인자에 대해 논의하였다. 매립폐기물의 불균질성과 측정상의 오차범위를 감안할 때 매립폐기물의 안정화 기준치는 $AT_4$ 기준으로 $10mg\;O_2/g\;DM$의 값을 제시하였다.

Keywords

References

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