Title:
【発明の名称】高分子凝集剤
Document Type and Number:
Japanese Patent JP2976283
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain the subject coagulant comprising a water-soluble vinylic polymer containing a specific monomer as an essential unit monomer and capable of exhibiting an excellent dehydration rate on the centrifugal dehydration treatment or belt-pressing hydration treatment of organic sludges generated on the microorganism treatments of sewages or excrements. SOLUTION: This coagulant comprises a water-soluble vinylic polymer containing a radical-polymerizable (meth)acrylic monomer having a primary amine base group, preferably a monomer of the formula (R is H, CH3 ; X is O, NH; Q is CH2 CH2 , CH2 CH2 CH2 , etc.; Z is Cl, Br, I, NO3 , etc.) as an essential unit monomer. The colloid equivalent values (a), (b) and (c) of the polymer at pHs of 4, 7 and 10 satisfy the inequalities: (b)/(a)=0.1 to 0.5, and (c)/(a)=0 to 0.1. The coagulant thereby exhibits high adsorptivity to suspended particles in water to show effective coagulability (flock formability), and especially exhibits a remarkable effect to high organic substance-containing sludges difficult in dehydration.
Inventors:
Kimihiko Noda
Masaaki Sato
Kawaguchi Shinobu
Masaaki Sato
Kawaguchi Shinobu
Application Number:
JP11879497A
Publication Date:
November 10, 1999
Filing Date:
April 21, 1997
Export Citation:
Assignee:
SANYO CHEMICAL INDUSTRIES,LTD.
International Classes:
B01D21/01; C02F1/52; C02F11/147; C07C213/00; C07C213/02; C07C219/08; C07C249/02; C07C251/08; C08F8/00; C08F8/12; C08F20/34; C08F20/60; (IPC1-7): B01D21/01; C02F11/14
Domestic Patent References:
| JP58139799A | ||||
| JP61200898A | ||||
| JP7171600A | ||||
| JP459100A | ||||
| JP388310B1 |