Abstract
For mitigation of membrane fouling without increasing power consumption for blowers, a mountain-Type baffle was set between membrane unit and air diffuser to disperse rising air bubbles and provide flat-sheet membranes more uniform velosity profiles. A laboratory experiment was conducted toinvestigate influence of setting patterns of the baffle on trans-membrane pressure increase rate. PIV method was also used for measuring valosity profiles over fla-sheet membrane surface. The baffle was found to be effective for making water-phase velocity profile more uniform and providing more uniform shear stress on membrane surface and was found to be effective method for mitigating membrane fouling without increasing bubble flowrate.
