Title:
HIGH MOLECULAR COAGULANT
Document Type and Number:
Japanese Patent JP3478871
Kind Code:
B2
Abstract:
PURPOSE: To obtain a coagulant which, when used for dewatering of sludge, has a good coagulation effect, gives a coagulated block with high strength and a low water content by mechanical dewatering, and is capable of stable dewatering of sludge by preparing it from a polymer which has benzyl vinylamine monomeric units of a specified structure in a specified ratio.
CONSTITUTION: A coagulant is prepared from a polymer having 2-30 mole % of a benzyl vinylamine unit expressed by the formula as a monomeric unit. The polymer is a benzylated product of hydrolyzate of poly-N-vinylformamide or copolymer of N-vinylformamide and other vinyl monomer. The high molecular coagulant when used for dewatering of sludge, has a good coagulation effect, gives a coagulated block with high strength, a low water content by mechanical dewatering, and peelable dewatered cake, enabling stable dewatering of sludge.
Inventors:
Shigeru Sato
Masayuki Murano
Masayuki Murano
Application Number:
JP15682394A
Publication Date:
December 15, 2003
Filing Date:
June 15, 1994
Export Citation:
Assignee:
Kurita Water Industries Ltd.
Dia Nitrix Co., Ltd.
Dia Nitrix Co., Ltd.
International Classes:
B01D21/01; C08F26/00; C08F26/02; C08L39/00; C08L39/02; (IPC1-7): B01D21/01; C08F26/02; C08L39/02
Domestic Patent References:
| JP4300700A | ||||
| JP4298300A | ||||
| JP4293600A | ||||
| JP58137500A |
Attorney, Agent or Firm:
Mitsuru Uchiyama
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