Reduction of Membrane Fouling by Physical, Chemical and Biological Pretreatment

摘要

The use of different pretreatment processes to evaluate the reduction in membranefouling due to pretreatment is discussed. Microfiltration, GAC filtration, alum coagulation, biofiltration, and ozonation/biofiltration are investigated. A hydrophobic UF membrane is used. The results suggest that processes that can reduce fouling, in order of best to worst, are: ozonation/biofiltration, biofiltration, coagulation, GAC adsorption, and microfiltration.