Monopersulfate treatment of membranes

Details Monopersulfate treatment of membranes Monopersulfate treatment of membranes

B - Operations, Transporting

01

D

B01D 65/02 (2006.01) B01D 65/08 (2006.01)

Patent

CA 2614498

A method of improving the water permeability and/or cleaning a porous polymeric microfiltration or ultrafiltration membrane, preferably a hydrophobic/hydrophilic blended membrane, eg P VdF/PVP comprising the step of contacting the porous polymeric membrane with a source of monopersulfate, preferably an aqueous solution of 2KHSO5.KHSO4.K2SO4.

La présente invention concerne un procédé destiné à améliorer la perméabilité à l'eau et/ou à nettoyer une membrane polymère poreuse de microfiltration ou d'ultrafiltration, de préférence une membrane mélangée hydrophobe/hydrophile, par exemple le PVDF/la PVP comprenant l'étape consistant à mettre en contact la membrane polymère poreuse avec une source de monopersulfate, de préférence une solution aqueuse de 2 KHSO<SUB>5</SUB>.KHSO<SUB>4</SUB>.K<SUB>2</SUB>SO<SUB>4</SUB>.

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