1. Major Rendering Plant
These facilities receive expired animals and animal parts that are cooked and rendered down to components that will be eventually used in manufacturing other animal feeds. The odors from the rooms and processes are pulled through a variety of packed scrubbers containing Acid, Caustic and Chlorine before being expelled into atmosphere. The air leaving the plants stacks, at times still had high odor load and a strong smell of bleach. The plants are located extremely close to local residences and have been under constant public scrutiny to lower their odorous emissions. Pre-conditioners injecting AiR8 were installed prior to the scrubbers to solve the problem. With the pre-conditioners in place, chlorine and caustic could be eliminated from the scrubber water and the blow down rate of the scrubber was reduced in half. The successful installations reduced odorous emissions from 2 locations in Canada resulting in lower odor complaints for similar costs to using Chlorine and Caustic.
2. Large Composting Facility
This facility receives grass clippings and organic waste that is reduced using a composting process. This process creates heat and odor as a by-product that is expelled into the local atmosphere. When the plant was originally built there were not any local housing developments, however that changed recently. These new residences had been constantly complaining that the smell of the compost was entering their yards and demanded action be taken. This application was done completely outdoors and did not have the luxury of containment from a building or stack. A spray system was set up in places where the emissions were in the highest concentrations to contact as much of the odor prior to entering the local air shed. Complaints have been successfully eliminated during the operation of the odor control system.