High recovery rate NF–FO–RO hybrid system for inland brackish water treatment

The current study proposes a multi-stage Nanofiltration –Forward OsmosisBrackish Water Reverse Osmosis system to increase the recovery rate of brackish water

Ali Altaee; Nidal Hilal

2014

Scholarcy highlights

  • Brackish water desalination is a common method for fresh water supply in arid areas
  • The current study proposes a multi-stage Nanofiltration–Forward OsmosisBrackish Water Reverse Osmosis system to increase the recovery rate of brackish water
  • Concentrated brine from the NF was fed to an FO membrane for power for additional fresh water extraction before disposal. 0.25–0.5 M NaCl was used as the draw solution in the FO membrane
  • The results showed that system recovery rate increased with increasing the concentration of the draw solution
  • NF process was responsible of 75% of the total recovery rate while BWRO process contribution was up to 20%
  • NF–Forward OsmosisBrackish Water Reverse Osmosis is flexible and can generate different proportions of permeate flows through controlling the recovery rates of each component

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