Abstract
Estimating and measuring the occurrence of a sensation, odor, around livestock facilities is challenging. This research compares the estimated frequency of odor nuisance with measured hydrogen sulfide (H2S) concentrations at various distances around a swine and a dairy operation, and discusses the results based on time of day, weather conditions, distance, and topography. The estimated odor annoyance-free and odor annoyance frequencies were based on a publically available calculator of odor impact derived from average odor emission rates, historical, and regional weather patterns, and dispersion modeling. Continuous monitoring of H2S was by single point monitors (SPM) at locations around the operations. Time-weighted average H2S concentrations were less than 10 ppb for odor annoyance-free frequencies, and less than 10 to at least 73 ppb for odor-annoyance frequencies. Verifying a proxy odor indicator can help update odor annoyance models and respond to site-specific concerns for existing facilities.
Highlights
Odor emissions from livestock and poultry farms can create annoyances among neighbors, while producers or farmers consider odors as an unavoidable consequence of their livelihood [1,2,3,4,5,6].For established facilities, odor nuisance and complaints cause community tension and in some situations, lead to legal proceedings
This paper presents an exploratory project to relate hydrogen sulfide concentrations to simulated odor nuisance around livestock facilities
Continuous hydrogen sulfide concentration data collected for dairy and swine case study farms near the source and receptor sites showed:
Summary
Odor emissions from livestock and poultry farms can create annoyances among neighbors, while producers or farmers consider odors as an unavoidable consequence of their livelihood [1,2,3,4,5,6].For established facilities, odor nuisance and complaints cause community tension and in some situations, lead to legal proceedings. Odor emissions from livestock and poultry farms can create annoyances among neighbors, while producers or farmers consider odors as an unavoidable consequence of their livelihood [1,2,3,4,5,6]. The potential for odor nuisance is often an argument against livestock development or the expansion for existing facilities. Historical odor emission and downwind impact estimates have proven useful in discussions for current and potential livestock facilities. Updates to odor emission rates and impact estimates have not kept pace with changes in the size and types of livestock production systems in the US. The South Dakota Odor Footprint Tool (SDOFT) [7] is one of many publically available calculation tools that estimate odor annoyance from livestock housing and manure storage.
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