| 摘要 |
PROBLEM TO BE SOLVED: To provide a sludge dewatering method in which in sludge dewatering treatment, the strength of flocculated floc is improved to improve the floc durability in mechanical compression for a lower percentage of water content of cake after dewatering.SOLUTION: An amphoteric polymer is added to sludge and a cationic polymer having an amidine structural unit is then added thereto. |
