An analysis of the effects of pressure-assisted osmotic backwashing on the high recovery reverse osmosis system

Chemical, and physicochemical cleaning are recommended to regenerate the membrane performance

Naveenkumar Ashok Yaranal; Sneha Kumari; Selvaraju Narayanasamy; Senthilmurugan Subbiah


Scholarcy highlights

  • Reverse osmosis is one of the widely used techniques for water purification and seawater desalination
  • To study and compare the effect of pressure-assisted osmotic BW cleaning at high recovery, the recovery of the system is fixed around 90%
  • The experimental results conclude that spiral-wound module with less pressure drop in the permeate channel can provide efficient PAO membrane BW
  • The use of concentrated feed solution during PAO BW will improve the BW efficiency, and it is achieved by using a concentrated brine
  • circuit RO system uses more equipment than the others, which leads to higher capital cost
  • A system without brine recycle is found to be more energy efficient than the other systems reported in this work, and this has to be verified for higher feed concentration
  • The effectiveness of pressure-assisted osmotic BW in Reverse osmosis membrane is counterbalanced, to some extent, by the significantly higher permeate total dissolved solids when backwash is applied

Need more features? Save interactive summary cards to your Scholarcy Library.