| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a sludge dehydration method capable of forming flocs strong and having good drainage with respect to dehydration sludge, especial dehydration sludge much in the content of an organic component and capable of performing an increase in dehydration treatment quantity and the lowering in the water content of a dehydrated cake in a dehydration process by a sludge dehydrator. <P>SOLUTION: A composition, which is composed of a vinyl polymerization type cationic polymer and an ampholytic polymer, which is obtained by polymerizing a (meth)acrylic monomer mixture wherein the molar ratio A/C of an anionic group constitution unit to a cationic group constitution unit is 0.1-0.7, is mixed with the dehydration sludge under stirring to form flocs which are, in turn, dehydrated by a dehydrator. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
