Vibrating disc filter

Membrane filters include flat sheet, spiral wound, and hollow fiber (Fig. 23). In addition, there are also rotating discs, annual gap, and vibrating disc systems for membrane cross-flow filtration. 

Rather than using a continuous rotation of the filter elements or interstitial discs, another variant employs vibration of the elements to enhance filtration. In this case up to 100 double-sided, flat filter elements separated by thin spacers are clamped together within a cylindrical vessel and caused to vibrate by a motor drive assembly close to the resonant/natural frequency of the unit. The oscillatory motion in the plane of the horizontal elements produces a shear rate up to 150000 s which is many times greater than that observed in typical low shear crossflow filters. As the feed flow rate and... 

---