Journal of Animal Environmental Science ISSN:1226-0274(Print) 축산시설환경학회지

This study evaluated the efficacy of filter adsorption-based odor control facilities, which are being used in other industries, for their applicability in livestock farms. The filter adsorption-based odor control facility installed in a pig farm was evaluated for 74 days, monitoring three points: the inlet section, outlet section, and hallway, using a real-time odor monitoring system. The study results showed that the average concentrations of NH₃ in the inlet, outlet, and hallway were 10.4 ± 9.6 ppm, 7.3 ± 4.1 ppm, and 2.7 ± 3.8 ppm, respectively. The H₂S concentrations in the inlet and outlet sections were 84.9.4 ± 76.1 ppb and 12.3 ± 11.9 ppb, respectively, indicating a significant reduction in concentrations after passing through the filter adsorption-based odor control facility. The H₂S concentration in the hallway was measured at 13.3 ± 23.8 ppb. The removal efficiency of NH₃ and H₂S by the filter adsorption-based odor control facility was approximately 13.5% and 66%, respectively, showing better effectiveness in removing H₂S than NH₃. However, regular filter replacement and maintenance are necessary to maintain efficient odor removal and odor control efficiency in the evaluated filter adsorption-based odor control facility. The frequency of filter maintenance and replacement may vary depending on the odor levels of the specific facility. According to the research findings, it is recommended to replace the filters approximately every 40-50 days for facilities with NH₃ concentrations of around 10 ppm and every 3 to 6 months for facilities with H₂S concentrations around 85 ppb.