Title:
POLYMER FLOCCULANT, METHOD FOR PRODUCTION THEREOF, AND DEWATERING METHOD FOR SLUDGE USING THE FLOCCULANT
Document Type and Number:
Japanese Patent JP2017000914
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a polymer flocculant excellent in flocculability, filtration rate and filtrate appearance, having a large floc diameter, capable of effectively dewatering and capable of making a dewatering cake having low water content and of exerting flocculation performance in a wide-range addition rate, and to provide a production method therefor and a sludge dewatering method using the flocculant.SOLUTION: There are provided a polymer flocculant being a cross-linking type water-soluble polymer whose aqueous solution has a prescribed viscoelasticity, and a sludge dewatering method using the polymer as the polymer flocculant. In the polymer, the relation of a storage elastic modulus G1 with a loss elastic modulus G2 of 0.1 mass% aqueous solution in distortion rate dependency measurement is G2G1 when that rate is over 350%, and besides, the relation of the storage elastic modulus G3 with the loss elastic modulus G4 of 0.1 mass% aqueous solution in angular frequency dependence measurement is G3G4 when that frequency is over 15 rad/s.SELECTED DRAWING: None
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Inventors:
TAKEDA KEN
Application Number:
JP2015114315A
Publication Date:
January 05, 2017
Filing Date:
June 04, 2015
Export Citation:
Assignee:
MT AQUAPOLYMER INC
International Classes:
B01D21/01; C02F11/14; C08F220/34; C08F220/60
Domestic Patent References:
| JP5103395B2 | 2012-12-19 | |||
| JP2013039539A | 2013-02-28 | |||
| JP2010194446A | 2010-09-09 | |||
| JP2005144346A | 2005-06-09 | |||
| JP2004025094A | 2004-01-29 | |||
| JP2000500387A | 2000-01-18 | |||
| JPH02219887A | 1990-09-03 | |||
| JP2014180648A | 2014-09-29 | |||
| JPS61293510A | 1986-12-24 | |||
| JP2010222505A | 2010-10-07 |
Foreign References:
| US6117938A | 2000-09-12 |
Attorney, Agent or Firm:
Yoshihiro Kimura
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