제주지역 양돈 악취물질의 분석 및 발생 특성

Abstract

In this study, the 9 designated odorous compounds have been analyzed from four swine farms in Jeju Island, in order to investigate the emission characteristics and odor contribution by different ventilation types. The ammonia showed the highest concentration in the fattening room of winch-curtain ventilation type ("C-farm"), and the hydrogen sulfide concentration was high in the growing room of enclosed ventilation type. Not only the odorous sulfur compounds, i.e., DMS, and DMDS, but also the volatile fatty acids, i.e., PA, n-BA, and iso-VA showed high concentrations in the winchcurtain ventilation type swine farms. However, the concentrations of H2S and n-VA were high in the enclosed ventilation type swine farms. The odor quotient (OQ) of n-BA was the highest among the odorous com -pounds, whereby the odor contributions by volatile fatty acids were high in all swine farms. Consequently, the volatile fatty acids might be considered as the major odor causing compounds to be controlled. In addition, the sum of odor quotient (SOQ) showed high values of growing room in "A-farm" (the enclosed ventilation type). On the comparison of the odor contribution, the volatile fatty acids were the highest in the range of 56.8～95.5% in all farms, followed by sulfur com -pounds and ammonia. Futhermore, the odor contribution of volatile fatty acids showed 72.4%, and it was 26.3% for sulfur compounds and 1.3% for ammonia in enclosed ventilation type. On the other hand, in winch-curtain ventilation type, the odor contribution of volatile fatty acids was higher as 91.1%, and it was relatively low as 7.7% for sulfur compounds and 1.2% for ammonia, resp -ectively.