제주지역 양돈 악취물질의 분석 및 악취기여도 평가

Abstract

In this study, the complex odor, the 22 designated odorous compounds and 4 undesignated odorous compounds has been analyzed from four swine farms in Jeju Island, in order to investigate the emission characteristics and odor contribution by different ventilation types. The complex odor and the volatile fatty acids were found to be higher than their emission standards at the boundary in four swine farms. However the sulfur compounds, nitrogen compounds, aldehyde compounds, and volatile organic compounds showed lower concentrations than the emission standards at the boundary. The concentrations of p-cresol and skatole were detected higher than the threshold limit value (TLV). The values of the sum of odor quotient (SOQ) were the highest at the boundary in 'B farm'. In the boundary of all swine farms, the odor quotients (OQ) of the volatile fatty acids (butyric acid, n-valeric acid, iso-valeric acid, except propionic acid) were showed the highest values, but the phenols (phenol, p-cresol) and the indoles (indole, skatole) showed low OQ values. Also, the odor contribution of volatile fatty acids was found to be the highest as 89.3∼96.6% at the boundaries in all farms. Consequently, the volatile fatty acids might be considered as the major causing compounds of odor complaints. From the odor contribution comparison based on the swine types, the contribution of sulfur compounds was the highest in the range of 46.0∼55.8% at the enclosed type swine facility. The odor contribution of volatile fatty acids was 44.9∼56.5% at the winch-curtain type facility.