Design of an industrial scale biofiltration system

Abstract

An industrial scale waste gas treatment system was designed and constructed at a Tobacco Processing Factory. The treatment system consisted of three units namely: condenser, scrubber and bio fdter, the latter acting as the major unit of the system. The major constituents of the foul smelling gas were found to be ammonia ( 400 — 500 ppm (v/v)) and hydrogen sulfide (> 100 ppm (v/v)). Complete removal of hydrogen sulfide and 95% removal of ammonia were achieved.