ABSTRACT
This chapter describes a field test at a swine facility. To characterize long-term ambient Hydrogen sulfide (H2S) concentrations measured at a wean-to-finish swine facility and to correlate ambient H2S concentrations with wind speed and direction, and time of day. To provide preliminary data on apparent potential individual and combined effects of abatement methods applied to the first-stage lagoon coupled with increasing summer temperatures and time since spring thaw on ambient H2S concentrations and slurry characteristics. H2S is generated from anaerobic fermentation of manure and is emitted by swine confinement facilities into the atmosphere. The total reduced sulfur monitoring system converted reduced sulfur gases to sulfur dioxide with a thermal oxidizer. The continuous Chemcassette detection technique was utilized to measure ambient H2S concentration. Ambient H2S concentrations were monitored at the property line of a wean-to-finish swine production facility from April through October 1998. The apparent influences of wind speed and time of day on downwind concentrations were evaluated.
