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The Task at Hand
In countries where separate organics collection is not yet in place or only partially so, the production of “quality compost” from municipal waste is the only way to meet the demand for compost. Even where organics are source-separated, trash can get put in the wrong bins, and improper prior treatment can result in contraries like glass, stones and plastic getting into the material.
For Komptech compost preparation, the compost to be cleaned needs to be sufficiently cured or dry. Preparation starts with drum or star screening. The material is normally separated into an undersize fraction of 0-15 (20) mm and an oversize fraction. The undersize fraction is cleaned of contraries in one or more air separation steps, and then forms the product. Following cleaning by wind sifter, stone separator or a combination thereof, the oversize fraction can be returned to the rotting process.