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Mechanical and Chemical Treatment of Slurry from Pig Finishing Units to Reduce Odor and Ammonia Emissions
Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org
Citation: International Symposium on Air Quality and Manure Management for Agriculture Conference Proceedings, 13-16 September 2010, Dallas, Texas 711P0510cd.(doi:10.13031/2013.32681)Authors: Kristoffer E.N Jonassen, Merete Lyngbye, Karen Sørensen, Carsten Christophersen
Keywords: Ammonia, Odor, Emission, Pig Slurry, Slurry pits, Ozone, Acid, Slurry separation
Emissions of odor and ammonia from small-scale pig finishing units were reduced by 40 % as a result of mechanical and chemical treatment of the slurry. Once a week, the pits were drained, and the slurry was separated mechanically using polymers, then ozonated and finally acidified with sulfuric acid. After treatment, the slurry was reflushed into the pits to function as a carrier liquid for the finishers continuous delivery of new material to the slurry. Between the weekly three-step treatments, the slurry was flushed out once, separated and acidified.
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