At the moment there is a very good working system of separating
organic waste from 'rest'wastes in Holland.
This system for separating householdwaste worked even better than expected
so there were problems handling the amounts of organic waste here.
The whole system is regulated by law.
The compost is divided in clean or very clean etc. from which the
cleanest part can be used in the certified organic agriculture.
Because it's often high in calcium the use is somewhat limited.
Heavy metals can sometimes be a problem in the less clean composts
but the use of them is phased out,
for batteries there also is a good working separation system.
At my own nursery the mount of organic waste is allmost 0% (just a
few stubs [ from older trees that would take too long to break down] per year)
everything else is reused as mulch and for nesting/winteringplaces and will be
composted slowly and naturally.
Frits v/d Laan