Mechanical analyses of flat sheet water treatment membranes

Murat Ozdemir, Selda Oterkus, Erkan Oterkus, Islam Amin, Abdel-Hameed El-Aassar, Hosam Shawky

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Abstract

In this work, we address the mechanical response of the flat sheet polymeric water treatment membranes under the assumed operational loading conditions. Firstly, we perform quasi-static analyses of the membranes under normal pressure loads, which is the condition that resembles the actual loading for flat sheet membranes in the submerged membrane bioreactors. Then, the long-term deformation of the membranes is studied under the assumed filtration durations for the same loading conditions by utilizing the viscoelastic material models. The quasi-static and viscoelastic membrane simulations are performed by a commercial finite element code ANSYS. Finally, the mechanical fatigue life predictions are carried out based on the stress distributions from the quasi-static analyses and the long-term effects from the viscoelastic analyses.
Original languageEnglish
JournalAIMS Materials Science
Publication statusAccepted/In press - 20 Oct 2022

Keywords

  • mechanical analysis
  • flat sheet
  • water treatment
  • membrane
  • fatigue
  • viscoelasticity

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