Biological Treatment of Odors from Fodder Manufacturing Process Using a Biotrickling Filter

The objective of this study was to investigate the performance of a two-stage biotrickling filter system installed for the control of odorous compounds in the emission gases from a food waste fodder manufacturing process. During long-term operation, 150 days, the removal efficiencies of total hydrocarbons were within the range of 90 to 98%. The major odorous compounds; especially aldehydes and sulfur compounds, were removed by up to 97.9 and 91.6%, respectively. The elimination capacity in the first stage of the system was much higher than that in the second stage. The elimination capacities in the first and second stages were approximately 223 and 73.4 g/m3-filter bed-hr, respectively.