Hydrogen sulfide (H2S) removal in synthetic media biofilters

This paper reviews recent developments in biofiltration as a process for the removal of hydrogen sulfide (H 2 S) from contaminated air using synthetic media. The paper includes results of extensive research, as well as data collected from a commercial biofilter installation at a municipal wastewater pumping station in Ontario, Canada. The results indicate that, for H 2 S concentrations of up to 40 ppm inlet, only 30-second empty bed residence time (EBRT) is required. But, for lower concentrations (