Reverse osmosis energy recovery system

[dhinesh.t]

I want to know the possibility for reducing pressure of reject Brine fluid below the inlet pressure of raw feeding water to RO by a pressure exchanger / Energy recovery turbine in Reverse osmosis system. If its possible, how it works? Please help me in this regards.
Thank you

 

[Simon Bridge]

http://cr4.globalspec.com/thread/82982/Reverse-osmosis-Energy-recovery
... the same questions apply here too. vis:
What's a "pressure exchanger"?
Could you supply a detailed drawing for analysis?

 

[Mordred]

A question like that needs a lot more information.

what is the max pressure, how much pressure drop?

Those are just a few question if possible can you post some system drawings.

 

[dhinesh.t]

Please go through the following link.

http://www.slideshare.net/dhinesht88/1-16197873

note the inlet & outlet parameter of energy recovery turbine. I want to know, how is it possible to lower the pressure at point 5 below the pressure at point 2.

Does anyone knows the internal arrangement of the same?

kindly help me to understand.