ZABOCS Bio trickling filterZabocs BTF is bio trickling filter designed to remove odors from large pump stations and waste water treatment plant operations. Bio-trickling may be designed to treat up to 25000 m3/h of odorous air per tower Process description Zabocs BTF uses random packed polyurethane foam cubes as a support for biomass growth. The media bed is continuously irrigated by circulated the sump liquid and nutrients over the media.Makeup water is added to maintain ph of recirculated liquid. This provides an optimum environment for the preferential growth of sulphur-oxidizing bacteriaThe Zabocs BTF may be designed to handle very high H2S concentration more than 500 ppm with 99% removal