A new folded plate membrane module for hydrodynamic characteristics improvement and flux enhancement

Zhang, Hanmin; Zhang, Jianpeng; Jiang, Wei; Yang, Fenglin; Du, Haiying

doi:10.1016/j.seppur.2015.09.011

Cited by 6 publications

(1 citation statement)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figueredo-Cardero et al [27] examined the flow field with in a thin gap between inner and outer cylinder, mainly focus on the radial behavior. Other PIV measurement also conducted with a rotating cone filter [28], a rotating flat-sheet (wing-like) membrane bioreactor [29,30], a vibrating hollow fiber filter [31], a folded plate membrane module [32] to better explain their filter performances by flow motion.…”

Section: Introductionmentioning

confidence: 99%

Local hydrodynamic investigation by PIV and CFD within a Dynamic filtration unit under laminar flow

Xie

Men

Dietrich

et al. 2018

Separation and Purification Technology

View full text Add to dashboard Cite

Local hydrodynamics within a complex and confined dynamic filtration module named RVF (Rotating and Vibrating Filtration) was scrutinized under laminar flow with viscous Newtonian fluid. This module was designed to treat complex fluids such as fermentation broth or liquid food. Previous results reported global hydrodynamics (friction and power consumption curves) and RVF efficiency during filtration of fermentation broths. However, the access to local variables (shear rate, velocity) appeared as challenging in a confined volume. By associating Particle Image Velocimetry (PIV) and an optical trigger strategy, the instantaneous velocity fields were measured and analyzed. PIV experiments were carried out at 6 different planes in the 3 mm narrow gap between the membrane and the impeller, considering two feeding flowrates (Q f =25 and 45 L/h) under mixing rates 2 Hz. In addition, a simulation approach by Computational Fluid Dynamics (CFD) was developed, confronted to PIV (Q f =45L/h, N=2Hz) and compared to global parameters.In this work, we showed the ability to measure local velocity in a complex, confined and rotating device. As expected, velocity in filtration cell was observed to be independent of flowrate. Magnitude of mean velocity fluctuation was quantified and discussed as a function of radial and axial position (constant impeller position). Moreover, velocity and shear rate profiles were introduced by simulation, they proved that simulations were in a good agreement with PIV measurements, and streamlines was also discussed combining Residence Time Distribution (RTD). Finally, local and global core velocity coefficients (issued from PIV and CFD), as an indicator of mechanical efficiency were calculated and compared to similar devices and alternative methodologies which were reported in the literature.

show abstract

Section: Introductionmentioning

confidence: 99%

Local hydrodynamic investigation by PIV and CFD within a Dynamic filtration unit under laminar flow

Xie

Men

Dietrich

et al. 2018

Separation and Purification Technology

View full text Add to dashboard Cite

show abstract

NaCl cleaning of 0.1 μm polyvinylidene ﬂuoride (PVDF) membrane fouled with humic acid (HA)

Wang

Song

et al. 2018

Chemical Engineering Research and Design

View full text Add to dashboard Cite

Local hydrodynamics investigation within a dynamic filtration unit under laminar flow

Xie

Dietrich

Fillaudeau

et al. 2018

Chemical Engineering Research and Design

View full text Add to dashboard Cite

Instantaneous wall shear stress is investigated in laminar flow in a dynamic filtration unit Mean wall shear stress distribution is deduced from vertical profiles of mean tangential velocity Organized motions induced by impeller rotation are reconstructed by P.O.D. analysis of P.I.V. data Root mean squared fluctuating wall shear stress distribution is estimated and shown to have the same order of magnitude as the mean wall shear stress.

show abstract

A new folded plate membrane module for hydrodynamic characteristics improvement and flux enhancement

Cited by 6 publications

References 23 publications

Local hydrodynamic investigation by PIV and CFD within a Dynamic filtration unit under laminar flow

Local hydrodynamic investigation by PIV and CFD within a Dynamic filtration unit under laminar flow

NaCl cleaning of 0.1 μm polyvinylidene ﬂuoride (PVDF) membrane fouled with humic acid (HA)

Local hydrodynamics investigation within a dynamic filtration unit under laminar flow

Contact Info

Product

Resources

About