| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To develop a flocculation treatment agent capable of coping with an increase of a chemical addition amount that is difficult in a crosslinked or branched aqueous polymer, using a (meth)acrylic monomer used generally as a commercially available product, without using a polyamidine aqueous polymer, by developing a sludge dewatering agent satisfactory in flocculation and high in a cake water content reduction ability, in a sewage mixed raw sludge, a sewage excess sludge, a sewage digested sludge and various excess sludge, in a sewage treatment plant. <P>SOLUTION: The development of the flocculation treatment agent is attained by a flocculation treatment agent containing (A) and (B) as follows. (A); a cationic or amphoteric aqueous polymer polymerized with 80-100 mol% of specified cationic monomer and other monomer, in addition of 20-300 ppm of crosslinking monomer with respect to a mixture of the monomers. (B); a cationic or amphoteric aqueous polymer polymerized with 80-100 mol% of specified cationic monomer different from that in (A) and other monomer, in addition of 20-300 ppm of crosslinking monomer with respect to a mixture of the monomers. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
