Sitka
Tribe Compost Demonstration Project
Page Four
Turning the pile lets off heat and helps homogenize the mixture.
The technology utilized in the project is entitled 'aerated
static pile' technology. Rather than use a windrow turner once per week
on the pile, blowers were used to force air into the pile negatively. Air
pushed out of the blowers was pushed through a biofilter (pile of wood
chips). This enabled the process to remain virtually odor-free. However,
as the pile cooled down, a front-end loader was utilized to agitate the
pile. This caused the pile to heat up again, as particles were mixed and
organisms were exposed to new food sources.
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