This study measured and analyzed the discharge concentration and characteristics of odor substances emitted from the discharge outlets of asphalt manufacturing facilities in South Korea. Measured factors included flow rate, composite odors, and 22 designated odor substances. After applying the dilution factor of composite odors emitted from 33 asphalt manufacturing facilities located in various regions to the composite odor emission standard of 500 times, it was found that more than half of these facilities exceeded the emission standard. The contribution rate of the designated odor substances from the discharge outlets was the highest for acetaldehyde at over 50%, followed by hydrogen sulfide and methyl mercaptan. The correlation between composite odors and the concentration of major designated odor substances was analyzed, and it was found that methyl mercaptan and acetaldehyde showed some correlation with the composite odor dilution factor. The methyl mercaptan odor intensity corresponding to the odor intensity of 4.5 to 5 ppb, which is the allowable odor dilution multiple emission standard of the odor emission source outlet, was estimated to be approximately 1.6 to 2.2 ppb, and the corresponding methyl mercaptan emission concentration range was estimated to be 0.98 to 2.02 ppb. The composite odor emission coefficient of asphalt concrete manufacturing facilities was estimated to be higher for general asphalt concrete than for asphalt concrete recycling facilities, and the composite odor emission coefficient of newly produced general asphalt concrete was estimated to be greater than that of recycled asphalt concrete. In terms of fuel usage, the composite odor emission coefficient of facilities that used Bunker C fuel oil was estimated to be higher than that of facilities powered by LPG and LNG fuel. It was deemed necessary to select 2 to 3 major designated odor substances that are correlated with the composite odor dilution factor for each major odor emission source, set the designated odor substance concentration corresponding to the composite odor dilution factor emission allowance standard, and review a plan to monitor the designated odor substances at the emission point.

Abstract
1. 서 론
2. 연구 내용 및 방법
    2.1 아스콘 제조시설
    2.2 악취물질 시료채취 및 분석방법
    2.3 악취물질 배출계수 산정과 기여도 평가방법
3. 결과 및 고찰
    3.1 복합악취 및 지정악취물질 배출 특성
    3.2 복합악취 및 지정악취물질 배출계수 산정
4. 결 론
감사의 글
References

• 이유경(국립환경과학원 대기공학연구과) | Yookyung Lee (Air Quality Research Division, National Institute of Environmental Research)
• 길한뉘(국립환경과학원 대기공학연구과) | Hannui Gil (Air Quality Research Division, National Institute of Environmental Research)
• 김기홍(국립환경과학원 대기공학연구과) | Keehong Kim (Air Quality Research Division, National Institute of Environmental Research)
• 강대일(국립환경과학원 대기공학연구과) | Daeil Kang (Air Quality Research Division, National Institute of Environmental Research)
• 공부주(국립환경과학원 대기공학연구과) | Buju Gong (Air Quality Research Division, National Institute of Environmental Research) Corresponding author
• 전준민((주)그린환경종합센터) | Junmin Jeon (Green Environmental Complex Center)