Method of treatment for separation of oil from oil-containing slurry waste

摘要

An oil-containing slurry waste containing a soap component in the oil component thereof is foamed by stirring so that the oil component adheres to the froth produced by the foaming and rises to the surface of the slurry waste by virtue of buoyancy. Consequently, the oil component in the slurry waste is separated from the slurry waste in a highly concentrated form as entrained by the froth. The oil thus separated is suitable for reuse. The slurry waste having a low oil content can be easily treated for disposal.