A METHOD FOR TREATING BOTTOM ASH

摘要

The invention relates to a method for treating bottom ash from a waste incineration plant. The invention relates in particular to a method for treating bottom ash from a domestic waste incineration plant. In accordance with the invention bottom ash having a size ranging up to 2 mm is treated by removing a previously determined component. The treatment comprises at least one of the following steps: the removal of organic components, the removal of heavy metals, the removal of ions and the removal of a fraction having a size of up to 50 ~m. It is preferred for the nonferrous heavy metals to be removed and the ferrous metals to remain in the fraction. Most preferably at least one of the treatment steps comprises a wet treatment.