Dynamic cross flow filtration with Novoflow's single shaft disk filters

Dynamic cross-flow filtration of oilfield produced water by rotating ceramic filter discs

“…Since the entire over flow is realized by rotation, only the permeate outflow is compensated, i.e. pumped through the filter module [13]. Industrial dynamic filtration module generally consist of three types; discs or rotors rotating near fixed membranes or rotating organic/ceramic disc membranes and vibrating systems [14].…”

High-frequency flow reversal for continuous microfiltration of milk with microsieves

“…Further investigations are in progress to study the scalability of the system to process larger milk volumes necessary for industrial application of the system. The system can be scaled easily by placing multiple rotating discs with microsieve parallel on a single axis, similar to rotating ceramic disk systems [36].…”

“…During filtration the disk can be rotated at frequencies between 5 and 25 Hz. The constant rotation of the microsieve creates a shear-effect on the membrane independent of the TMP, as opposed to tubular membrane or other non-rotating membrane systems which suffer from substantial pressure drops along the membrane in order to create sufficient shear [36,37]. The back-pulsing is achieved by reversing the flow through the microsieve with a vacuum device placed close to the surface of the rotating disk with the microsieve.…”

The impact of mechanical shear on membrane flux and energy demand

“…The process appears especially effective for high-value, small-scale duties, including various dairy industry applications [6,[13][14][15][16][17][18][19][20][21][22][23][24][25], the treatment of yeast dispersions and bovine albumin solutions [4,5,26], pulp and paper industry applications [7,27] and specialist beverage process separations, such as the treatment of chicory juice [28][29][30] or sugar beet juice [31,32]. It has also found use in landfill leachate treatment [33,34], arsenic removal from drinking water [11,35], treatment of brine and brackish water [36][37][38], removal of natural organic matter [10,39,40], livestock wastewater treatment [8,41,42], dishwasher detergent wastewater and surfactant solution treatment [43,44], separation of microalgae [45,46] and Anammox sludge consolidation [47].…”