INORGANIC SLUDGE DEWATERING AGENT FOR FILTER PRESS

摘要

PROBLEM TO BE SOLVED: To provide: an inorganic sludge dewatering agent for a filter press that can efficiently reduce a cake water content of inorganic sludge further; and an inorganic sludge treatment method.SOLUTION: An inorganic sludge dewatering agent for a filter press includes a nonionic polyoxyalkylene alkyl or an alkenyl ether in which a cloud point is at most 50°C. A method of manufacturing a dehydrated cake of inorganic sludge includes adding the inorganic sludge dewatering agent for a filter press to the inorganic sludge and then conducting dehydration by a filter press. A dehydration method of inorganic sludge cake includes adding the nonionic polyoxyalkylene alkyl or the alkenyl ether in which the cloud point is at most 50°C and then conducting dehydration by a filter press.