Application of Membrane Distillation in Water Recovery from Reverse Osmosis Brine

Reverse osmosis (RO) is a well-established technology for treatment of impaired water sources andproduction of desalinated water. One of the major drawbacks with RO is the volume of concentrate(reject) produced during the process. Several technologies and process configurations have been proposedfor further treatment of RO concentrate and reduction of the reject volume.This review addresses Membrane Distillation (MD) as an emerging technology for increasing RO brinerecovery. The MD application for treating RO concentrate from municipal and industrial sites to enhancethe overall feed water recovery is presented. The main advantage of MD is its independency to feedconcentration and use of low grade energies in the process.

کلیدواژه ها:

Reverse osmosis brine ، Membrane distillation ، Recovery rate