MANUFACTURING METHOD OF AN ENVIRONMENTALLY-FRIENDLY COVERING MATERIAL USING FLY ASH, CAPABLE OF MINIMIZING SECONDARY ENVIRONMENTAL CONTAMINATION BY CARBON DIOXIDE GENERATED FROM A CEMENT FIRING PROCESS

摘要

PURPOSE: A manufacturing method of an environment-friendly covering material using fly ash is provided to reduce the solidification process cost for sewage sludge and to prevent the secondary environmental contamination from ocean dumping.;CONSTITUTION: A manufacturing method of an environmentally-friendly covering material using fly ash comprises the following steps: mixing paper sludge ash, sewage sludge ash, and red mud sludge to form a solid portion(S1); adding sewage sludge with 80~85% of water to the solid portion(S2); stirring the mixture and spraying an acidic solution for reacting(S3); and reducing the reaction temperature and moisture from the mixture to cure the covering material in a soil form(S4).;COPYRIGHT KIPO 2011