We had the privilege of working with the City of Whitehorse on their food waste and yard waste composting program. When they began the process five years ago, they initiated a turned windrow composting program. The challenges that they encountered included:
1. plastic and other non-organic material wrapping around the turner rotor
2. small windrows not retaining heat during colder months
3. inefficient use of space
4. excess cost of moving material from receiving area, to turned windrow area, back to screening area
In the fall of 2012, we suggested that the City of Whitehorse utilize a vertical auger mixer to open bags, blend and size reduce the incoming curbside collected yard waste and food waste. We suggested implementing aerated windrows instead of turned windrows.
The aerated windrows were implemented in spring 2013, utilizing existing piping available, and aeration blowers and timers.
We also recently provided a Supreme EnviroProcessor, which increases the efficiency of material preparation for composting.
Overall, the changes to the composting program allows the City of Whitehorse to expand their program without requiring additional space, and reduces the operations cost due to a more efficient site layout.