매립가스 표면발산량 조사 결과의 신뢰도와 측정지점 수의 적정성 평가를 위해 수도권 제2매립 장을 대상으로 중심극한정리와 t-검정을 이용하여 분석하였다. 3개의 표면발산 경로별 flux에서 매립가스 보다 메탄의 상대편차가 훨씬 크게 나타났으며, 계절별로는 두 경우 모두 여름철 상부가 각각 409%, 1,174%로 가장 컸다. 상대오차도 메탄의 값이 전반적으로 컸으며, 4계절 평균시 여름철 메탄이 182.7%로 가장 크고, 매립가스의 봄과 겨울철이 33.0% 내외로 가장 작았다. 20%의 상대오차를 허용할 때 현장 측정 지점 수는 모두 적정 수 대비 100% 미만이었으며, 특히 메탄이 매우 낮았다. 표면발산량이 가장 큰 상부의 경우 측정지점 수의 만족도는 봄부터 겨울까지 매립가스는 각각 26.1%, 9.8%, 17.9%, 22.6% 그리고 메탄 은 각각 2.7%, 1.2%, 5.9%, 3.2%에 불과하였다. 연구결과 매립가스 표면발산량 조사시에 현재의 챔버 방 식은 신뢰도 확보에 한계가 있으므로 대체 조사방법에 대한 연구가 필요할 것으로 판단되었다.

To evaluate the reliability of the results of landfill gas surface emission measurement and the appropriateness of the number of measurement points, an analysis was performed for the Second Landfill Site in Sudokwon Landfill by applying the central limit theorem and t-test. In the flux of the three surface emission paths, the relative deviation of methane was much larger than the deviation of landfill gas. By season, in both cases, the upper part of the summer season had the largest values, 409% and 1,174%, respectively. The relative error in overall methane values was also large, and among the four-season average values, the summer methane value was largest at 182.7% and the spring and winter values of landfill gas were smallest at approximately 33.0%. When a relative error of 20% was allowed, the number of site measurement points was universally smaller than 100% compared to the appropriate number, and methane was very low. In the case of the upper part with the largest surface emission, the level of satisfaction with the number of measurement points from spring to winter was only 26.1%, 9.8%, 17.9%, and 22.6%, respectively, and the methane values were only 2.7%, 1.2%, 5.9%, and 3.2%, respectively. As a result of the study, when investigating the surface emission of the landfill gas it was judged that research on alternative monitoring methodologies were necessary because the current chamber method has limitations in securing reliability.

요 약
Abstract
1. 서 론
2. 연구방법
    2.1. CLT
    2.2. 연구대상 매립지
    2.3. 표면발산 측정 및 측정자료의 평가 방법
3. 결과 및 고찰
    3.1. 측정자료 분석결과계절 및 배출경로별 매립가스와
    3.2. 계절 및 배출경로별 오차 가능폭
    3.3. 허용오차율에 따른 시료 수의 적정성
4. 결 론
References

• 천승규(서울과학기술대학교 화공생명공학과, 교수) | Seung Kyu Chun (Department of Chemical and Biomolecular Engineering, Seoul National University of Science & Technology)
• 이화균(서울과학기술대학교 에너지화학공학과, 학생) | Hwa Kyun Lee (Department of Energy and Chemical Engineering, Seoul National University of Science & Technology) Corresponding author