Screw-thread flow promoters: an experimental study of ultrafiltration and microfiltration performance

Methods Employed for Control of Fouling in MF and UF Membranes: A Comprehensive Review

“…The effective method used to counter this was the use of a tubular filter with a loose-fitting helical insert to filter blood in steady flow (182). Helical screw thread inserts were used in the UF of bovine serum albumin (183). The inserts were compared to plain rod performances and at flow rates up to 0.41 L/min, the helical insert produced significant enhancement of permeate flux.…”

Generation of Coarse Bubbles and Flow Instability Control by Means of a Bubble Generator

“…As a result, the concentration of the latter at the membrane surface is reduced, which also yields reduced absorption. Much effort has been directed to increasing local turbulence or mixing in the near‐membrane region by using setup design, flow instability, and secondary flows .…”

Experiment and calculation of filtration processes in an external-loop airlift ceramic membrane bioreactor

“…The principal limitation of this technique lies in the flux decline associated with the deposition of particles on the membrane. Hydrodynamic techniques such as helical inserts (Millward et al, 1995), pulsatile and reverse flow (Smit et al, 2005) are used to reduce membrane concentration polarization and fouling, but these methods require either specific membranes or network modifications.…”