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Improving Air Quality in Swine Buildings by Using a Combination of Technologies - Pilot-Scale Tests

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:  10th International Livestock Environment Symposium (ILES X)  .(doi:10.13031/iles.18-048)
Authors:   Ariane Lévesque, Matthieu Girard, Valérie Létourneau, Caroline Duchaine, Stéphane Godbout, Stéphane P. Lemay
Keywords:   Ammonia, Bioaerosols, Contaminant Reduction Technologies, Dust, Odors, Swine Industry.

Abstract. The environmental impact of swine production is still a great concern for the industry as well as for rural populations. Substantial amounts of aerial contaminants such as odors, gases and dust can be emitted by livestock buildings and affect both pig and worker health as well as the nearby environment. Different strategies have successfully reduced some of these airborne contaminants over the years, but few studies looked at their combined effect. Thus, the main objective of this study is to evaluate the reduction of airborne contaminants by using a combination of best practices as compared to conventional management in swine industry at a pilot-scale.

Previously in the project, a series of experiments was conducted at a laboratory-scale (4-5 grower-finisher pigs per room) to evaluate the performance of some strategies alone or combined. Results have shown that in order to protect both worker health and reduce environmental emissions, all three tested technologies should be used together: manure separation with a v-shaped scraper, oil sprinkling and an air treatment unit.

Following the laboratory-scale results, it was necessary to validate the performance of the technologies at a pilot-scale using two rooms with 16 pigs each. Ammonia emissions for both rooms were quite similar. Unfortunately, the v-shaped scraper didn‘t provide the expected reduction in ammonia emissions. The air treatment unit removed up to 66% of the ammonia on average with peaks up to 80%. For dust, oil sprinkling reduced the dust load by 70% on average.

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