Research progress of hydrophilic modification of polyvinylidene fluoride ultrafiltration membrane
Jianwei Liu · Industrial Water & Wastewater · 2016
Membrane fouling can shorten its service life and increase costs of hydraulic/chemical cleaning and membrane module replacement. In order to reduce operating costs, it is necessary to control membrane fouling. Membrane fouling is related to both membrane intrinsic properties and contaminants in the raw water. Since hydrophilic membrane has high water flux and good antifouling performance, improving its hydrophilcity is one of the important ways to increase membrane water flux and control membrane fouling. The research progress of surface hydrophilic modification and blending hydrophilic modification of the polyvinylidene fluoride which characterized by good chemical stability, radiation resisting property and thermal stability, was introduced briefly. It was pointed out that, no matter which mode of modification was selected, surface or blending, the hydrophilicity of the polyvinylidene fluoride membrane could be improved finally.