Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
SCALE PREVENTION METHOD AND MAGNESIUM HYDROXIDE SCALE INHIBITOR FOR REVERSE OSMOSIS MEMBRANE
Document Type and Number:
Japanese Patent JP2014195754
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a scale prevention method and a magnesium hydroxide scale inhibitor for a reverse osmosis membrane which can suppress the generation of magnesium hydroxide scale without remarkably increasing the phosphorus concentration of wastewater in reverse osmosis treatment.SOLUTION: A copolymer having a weight average molecular weight of 1,000-50,000 obtained by polymerizing a monomer component comprising (meth)acrylic acid and 2-(meth)acrylamide-2-methylpropanesulfonic acid is added to a reverse osmosis membrane treatment water system to suppress the generation of magnesium hydroxide scale in reverse osmosis treatment.

More Like This:
WO/2020/107101COATING OF A SCALE INHIBITOR WITH A HYDROPHOBIC AGENT FOR CONTROLLED RELEASE
Inventors:
NISHIDA IKUKO
Application Number:
JP2013071674A
Publication Date:
October 16, 2014
Filing Date:
March 29, 2013
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
KURITA WATER IND LTD
International Classes:
C02F5/10; B01D61/02; C02F1/44; C02F5/00; C08F220/06; C08F220/58
Domestic Patent References:
JP2010202893A2010-09-16
JPH09290275A1997-11-11
JPH0360798A1991-03-15
Foreign References:
WO2012132892A12012-10-04
Attorney, Agent or Firm:
Kaoru Watanabe
Miwako Inoue



 
Previous Patent: TREATMENT METHOD OF ALKALINE AQUEOUS SOLUTION OF MONOMETHYL SULFATE

Next Patent: NOZZLE DEVICE FOR MOLDING VISCOUS SUBSTANCE, AND BAND DRYER EQUIPPED WITH THE SAME