METHOD FOR PRE-TREATMENT OF WASTE

摘要

PROBLEM TO BE SOLVED: To provide a method for pre-treatment of a waste which can previously remove a component corroding a boiler superheater tube in the waste in a first half process of treating a general waste like a municipal waste and an industrial waste in a heat treat furnace such as an incinerator or a gasifying furnace.SOLUTION: A method for treating wastes before incineration is characterized in that the wastes are crushed by a crusher and a chlorine containing substance and/or a corrosive substance of alkali metals included in the crushed wastes is removed. The crushed wastes are sorted into heavy wastes and middle-/light-weight wastes by weight. The heavy wastes are preferably dehydrated by a dehydrator and sorted into separate water including a chlorine compound and/or alkali metal and dehydrated solid wastes, while the middle-/light-weight wastes are separated into wastes each containing a polyvinyl chloride as a primary component and other wastes.