Improvement of the dispersion of odour through conveying

In order to exemplify how conveying of diffuse emissions could reduce odour impact, a case study of a facility for the treatment of green waste is described. The treatment is conducted in closed sheds and the odorous gases are conveyed to biofilters. Still, the heaps of conferred green waste are stored open air, whereas the curing phase is conducted under a roofing. In the future scenario, in order to avoid an increase of the plant odour emissions due to an increased treatment capacity, a new shed for the storage of the heaps that are currently stored open air should be built. The odorous gases will be sucked from the shed and conveyed to a stack placed on the roof, without any further odour abatement system. The results obtained by application of an odour dispersion model to the present and future emission scenarios, respectively, show that, just by confining the diffuse sources in a close shed and conveying the flue gases to a stack, with no need of additional odour abatement systems, the odour impact of the facility in the future emission scenario can be made comparable to that in the present emission scenario, despite the increased treatment capacity.