They add woodchips to adjust the carbon to nitrogen ratio — there is an optimal C - N ratio for composting — I think it is around 25 to 1.
Human waste has a lot of Nitrogen so you have to
add the woodchips (i.e. carbon) in order to optimize the ratio and speed up the composting process.
Not exact matches
In this way we could be selling billions of dollars worth of value
added manufactured renewable products to Asia creating thousands of meaningful Australian jobs rather than selling low value primary products like coal and
woodchips.