TREATMENT FOR INCINERATION ASH OF SEWAGE SLUDGE

摘要

PURPOSE:To obtain aggregate of high strength by adding waste org. liq. to the incineration ashes of sewage sludge and granulating the ashes then calcining the granules. CONSTITUTION:In a method of adding waste org. liq. to the incineration ashes of sewage sludge and granulating and calcining said ashes, the waste org. liq. is added to said incineration ashes so as to adjust the content of the dry solid to 4-12wt%. After the ashes are granulated, the granules are calcined. A rotary kiln or the like is used for granulation and granules having 0.5-15mm. grain sizes are obtained.