MICROFILTRATION-RATE INCREASE OF O W EMUL SION BY USE OF ROTATING MEMBRANE-FILTER WITH ADDITIONAL SUSPENDED-SOLIDS/

The high-flux dynamic microfiltration of an oil-in-water emulsion was studied under constant pressure by using a rotating cylinder type memb rane filter with a suspending particle bed in the filter chamber. Usin g this dynamic filtration, much smaller hydraulic cake-resistance can be obtained than that encountered in conventional operation. It was qu ickly discovered that, due to the powerful sweeping force acting on th e fouling cake-layer, the dynamic effects of the additional suspended solids yield remarkable improvements in the microfiltration flux of po orly filterable O/W systems.