Stage of Operation	Method of Odour Control
Waste Reception and Pre-Treatment	Waste from trucks is deposited inside a sealed building. The waste is stored, sorted and mixed with bulking agent inside the building. Air from inside the building is extracted and passed through a biofilter or bio-scrubber.
Composting	Waste is transported from inside the Reception Building in sealed conveyors to the top of the VCU composting system. Waste is fed directly into sealed chambers. The sealed chambers control odour during composting and exhaust is ducted back into the building for treatment with the rest of the air from that building.
Maturation and Storage	Where on-site maturation is required, this best done in a closed environment using either a Maturation Building or Maturation Tunnels. In some applications the product can be matured in well-managed open windrows. The Maturation Building or Maturation Tunnels are sealed and exhaust air from inside is passed through a bio-filter or bio-scrubber.