Numerical analysis of hydrodynamic performance of the membrane in an anaerobic membrane reactors: the mean velocity effect


Güler B., Arıcı M. E.

4th IWARR Conference 2021 (IWARR 2021), İstanbul, Turkey, 5 - 08 September 2021

  • Publication Type: Conference Paper / Unpublished
  • City: İstanbul
  • Country: Turkey

Abstract

Anaerobic membrane bioreactors (anMBR) are used in wastewater treatment technology. These

reactors consist of two main elements. The first is a full-mix anaerobic reactor where biological treatment

takes place. The second element coming after the anaerobic reactor is the membrane where the ultrafiltration

(UF) process takes place. The membranes used in the water treatment applications are basically porous walls

and they act as the waste water filtering instrument. For the analysis the forward osmosis (FO) which is a

filtration process based on the chemical potential driving force between the feed and draw sides of the

membrane was considered. In the present study, the effect of draw to feed side velocity ratios on water

mass flux through the membrane and mean inlet velocity effect on the membrane performance for the

same draw and feed sides velocity were numerically investigated. It was fond that increasing draw mean

velocity increases the mass flux through the membrane. For the same draw and feed velocity up to 0.1 m/s

the mass flux tends to increase, whereas from 0.1 to 1 m/ s of the mean velocities the mass flux start to

decrease.