[Removal of Volatile Sulfur Odor by the Biotrickling Filter].

The biodegradation of gas-phase mixtrue of dimethyl sulfide (DMS) and 1-propanethiol (PT) was examined in a biotrickling filter (BTF), inoculated with a microbial consortium composed of activated sewage sludge, and pure strains of Alcaligenes sp. SY1 and Pseudomonas putida. S-1. BTF could be successfully started up within only 11 days when the inlet concentrations of DMS and PT were both 50 mg·m ^-3 and EBRT was 30 s, with 90% removal efficiency (RE) of DMS and 100% RE of PT. In the steady state, the maximum elimination capacities of DMS and PT were 8.7 g·(m ³ ·h) ^-1 and 12.4 g·(m ³ ·h) ^-1 , respectively. The presence of PT with a concentration up to 51 mg·m ^-3 showed an antagonistic removal pattern for DMS, but the opposite did not occur. Meanwhile, the BTF showed high efficiency in the biodegradation of H ₂ S. When the concentration of H ₂ S was as high as 230 mg·m ^-3 , the RE of H ₂ S could reach 98%. However, H ₂ S showed a declining effect on the removal of DMS when the concentration exceeded 115 mg·m ^-3 .