Composting of refuse and other waste material - by aerobic rotting of the milled and sieved material

摘要

In a process for the working up and composting of refuse or other waste material, the material is ground to a finness such that its glass content has a particle size of 1 mm using a mill with a blast grader, the water-content of the material being held at 30 wt. % and/or its temp. being held at is not 65 degrees C; the ground material is fed to a magnetic separator and a sieve which limits the ground material to a particle size of 20 mm or less; oversize material retained by the grader and the seive is returned to the mill; and the final milled prod. is subjected to aerobic rotting in a conventional manner. Carrying out the milling under the prescribed conditions leads to a particle size analysis such that all of the waste material (except metals removed by the magnetic separator) can be composted, so that no uncompostable residue remains to be disposed of.