Environmental fundamental facilities have different odor emission characteristics depending on the type of treatment facilities. To overcome the limitations of the olfactometry method, research needs to be conducted on how to calculate the dilution factor from the individual odor concentrations. The aim of this study was to determine the air dilution factor estimated from manually measured concentration data of individual odor substances (22 specified odor species) in three environmental treatment facilities. In order to calculate the optimum algorism for each environmental fundamental facility, three types of facilities were selected, the concentration of odor substances in the exhaust gas was measured, and the contribution of the overall dilution factor was evaluated. To estimate the dilution factor, four to six algorism were induced and evaluated by correlation analysis between substance concentration and complex odor data. Dilution factors from O municipal water treatment (MWT) and Y livestock wastewater treatment (LWT) facilities showed high level of dilution factors, because concentration levels of hydrogen sulfide and methylmercaptan, which had low odor threshold concentrations, were high. In S food waste treatment (FWT) facility, the aldehyde group strongly influenced dilution the factor (dominant substance: acetaldehyde, i-valeraldhyde and methylmercaptan). In the evaluation of four to six algorism to estimate the dilution factor, the vector algorism (described in the text) was optimum for O MWT and Y LWT, while the algorism using the sum of the top-three dominant substances showed the best outcome for S FWT. In further studies, estimation of the dilution factor from simultaneously monitored data by odor sensors will be developed and integrated with the results in this study.

Abstract
1. 서 론
2. 연구 방법
    2.1 대상 환경기초시설 선정
    2.2 배출가스의 개별물질농도 수동측정
    2.3 개별 물질농도와 공기희석배수의 관계식
    2.4 혼합 악취유발물질의 공기희석배수 추정 알고리즘
3. 연구 결과 및 고찰
    3.1 개별물질 측정농도 및 희석배수
    3.2 개별물질 농도로부터 공기희석배수 산정
    3.3 복합악취의 공기희석배수 산정 알고리즘 평가
4. 결 론
References

• 김경찬(안양대학교 환경에너지공학과) | Kyoungchan Kim (Department of Environmental and Energy Engineering, Anyang University)
• 이춘상(안양대학교 환경에너지공학과) | Chunsang Lee (Department of Environmental and Energy Engineering, Anyang University)
• 한상우(안양대학교 환경에너지공학과) | Sangwoo Han (Department of Environmental and Energy Engineering, Anyang University)
• 주흥수(안양대학교 환경에너지공학과) | HungSoo Joo (Department of Environmental and Energy Engineering, Anyang University)
• 이종민(㈜센코) | Jongmin Lee (SENKO Co., Ltd.)
• 한진석(안양대학교 환경에너지공학과) | Jinseok Han (Department of Environmental and Energy Engineering, Anyang University) Corresponding author