In this study, the odor generated in a livestock farm with 500 heads of finisher breed in 661 m² was monitored during 6 months using a gas sensor, a wired / wireless communication system and database server. Odor unit, ammonia, hydrogen sulfide, and total volatile organic compounds (TVOC) were monitored using the gas sensor. To show the tendency of odorous substances generation, the odor concentration was shown in the graph on a monthly and daily basis. Among the analysis items, the maximum generation of odor was found to be closely related to the generation of hydrogen sulfide. Through observing the daily and monthly trends of odor substances, it was found that each substance was a useful indicator for monitoring odor, because ammonia, hydrogen sulfide, odor and TVOC were increased and decreased in a similar pattern. The odors were highest in the hours of the early morning (00:00-05:00), the evening (18:00-23:00), and the morning (06:00-11:00) in a day. After the use of the microbial agent was discontinued in autumn (October), anaerobic digestion of the manure in a pit proceeded and the amount of hydrogen sulfide increased. Therefore, despite a slight decrease in ammonia production, the odor unit level did not decrease after October but rather was somewhat increased. In the future, the use of the odor monitoring system is expected to improve the efficiency of odor sources management.

Abstract
 1. 서 론
 2. 연구 방법
  2.1 축산농가 선정
  2.2 실시간 악취 모니터링 시스템
  2.3 미생물 제제 및 돈분뇨의 미생물 군집구조 분석
 3. 결 과
  3.1 악취물질 분석 결과
  3.2 미생물 제제 및 돈분뇨의 미생물 군집구조 분석 결과
 4. 결 론
 References

• 오민환(수원대학교 환경에너지공학과) | Min hwan Oh (Department of Environmental Energy Engineering, Suwon University)
• 이은영(수원대학교 환경에너지공학과) | Eun Young Lee (Department of Environmental Energy Engineering, Suwon University) Corresponding author