Dynamic polymer layers on membranes as antifoulants in membrane filtration

摘要

In practice of water treatment by membrane filtration, fouling of membranes is the dominant cause for the decline of permeate flux. Different techniques, such as water pretreatment, improved hydrodynamics, membrane treatment, are used to control fouling [1-4]. Membrane treatment (or pre-treatment) by appropriate surfactants, polymers or colloids is applied to increase homogeneity and/or hydrophilicity of the membrane, and this way to reduce fouling [3,4].