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DESIGN AND ANALYSIS OF A PILOT SCALE BIOFILTRATION SYSTEM FOR ODOROUS AIR
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2000
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FiltrationEngineeringAir QualityWastewater TreatmentChemical EngineeringWater TreatmentMembrane ProcessSwine OdorAir CleaningAir SamplingMoisture ContentEcotoxicologyElectronic NoseWaste ManagementNecessary Peripheral EquipmentEnvironmental EngineeringBiological PollutantWater PurificationEnvironmental RemediationIndoor Air QualityAir Pollution
Three pilot-scale biofilters and necessary peripheral equipment were built to clean odorous air from the pit ofa swine gestation building at North Carolina State University. A computer measured temperatures, flow rates, andpressure drops. It also controlled and measured the moisture content of a biofilter medium comprised of a 3:1 mixture ofyard waste compost to wood chips mixture (by volume). The system was evaluated to ensure that the biofilters would beuseful for performing scientific experiments concerning the reduction of swine odor on future research projects. Thecapability of the biofilters to remove odor was measured using a cotton swatch absorption method and an odor panel. Theaverage odor reductions measured by odor intensity, irritation intensity, and unpleasantness for five tests were 61%, 58%,and 84%, respectively. No significant differences in odor reduction performance were found between the biofilters.