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Design and Evaluation of a Porous Windbreak Wall for Treating Swine House Emissions

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

Citation:  2010 Pittsburgh, Pennsylvania, June 20 - June 23, 2010  1009626.(doi:10.13031/2013.29973)
Authors:   Chris J Dela Cruz, Alex J Ingalls, David L Sanders, Sanjay B Shah, Larry F Stikeleather
Keywords:   Windbreak wall, porous, woodchips, swine, emissions

Emissions from animal houses include gases that may harm the environment and emanate unfavorable odors. A potential solution to this problem is the implementation of a porous windbreak wall. This device incorporates a windbreak wall, which is used for dilution and a biofilter for treatment of emissions. The design process involved research in the identification of a suitable biomass and computational fluid dynamics (CFD). Based on these results, woodchips were chosen as a fitting media and a distance of six feet was deemed as an appropriate length between the fan and the media. The overall design of the device consisted of three main pieces that include the frame containing the woodchips, an upper wall consisting of tarp and two wooden columns that hold the structure together. The testing performed involved the measurement of gas concentrations, volumetric flow rate, pressure drop and odor. Results from these tests show that ammonia had a well defined correlation reduction with an average value of 1.8%. Test results from nitrous oxide, carbon dioxide and methane show no treatment correlation and had intangible treatment results. These results suggest that treatment effectiveness needs to be increased for the technology to be viable, whether through a more effective design or through better media management

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