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Odorous compounds sources and transport from a swine deep-pit finishing operation: A case study

恶臭化合物来源与猪深基坑修整作业的运输:一个案例研究

关键词:
来源:
Journal of Environmental Management
全文链接1:
file1/M00/06/6B/Csgk0FzPlImAfBjmAB-sI_XrbnI929.pdf
全文链接2:
https://www.sciencedirect.com/science/article/pii/S0301479718312520
类型:
学术文献
语种:
英文
原文发布日期:
2019-03-01
摘要:
Odor emissions from swine finishing operations are an air quality issue that affects residents at the local level. A study was conducted at a commercial swine deep-pit finishing operation in central Iowa to monitor odorous compounds emitted and transported offsite. Gaseous compounds were sampled using either sorbent tubes or canisters with GC/MS analysis, and particulates matter (PM 10 ) were sampled with high volume samplers and thermally extracted onto sorbent tubes for GC/MS analysis. Major odorous chemical classes detected at the swine facility included volatile sulfur compounds (VSC), volatile fatty acids (VFA), phenol and indole compounds. Manure storage was the main source of odorous compounds of which hydrogen sulfide (H 2 S), methanethiol, 4-methylphenol, and 3-methylindole were key offenders. Only H 2 S and 4-methylphenol were detected above odor threshold values (OTV) at all locations around the facility and both 4-methylphenol and 3-methylindole were detected above their OTV 1.5 km downwind from the swine facility. Odorous compounds generated during agitation and pumping of the deep pits was mainly H 2 S. Odorants were mainly transported in the gas phase with less than 0.1% being associated with PM 10 . Odor mitigation efforts  should focus on gaseous compounds emitted from deep-pits and especially during manure agitation and deep-pit pumping.
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