Reverse osmosis energy recovery system

In summary, the conversation discusses the possibility of reducing the pressure of reject Brine fluid in a Reverse Osmosis system below the inlet pressure of raw feeding water using a pressure exchanger or energy recovery turbine. More information, such as the maximum pressure and pressure drop, is needed for a detailed analysis. A system drawing is also requested. The provided link includes a system drawing with parameters for an energy recovery turbine, and the question is asked how it is possible to lower the pressure at one point below another. The internal arrangement of the energy recovery turbine is also requested to be explained.
  • #1
dhinesh.t
4
0
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
 
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  • #2
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?
 
  • #3
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.
 
  • #4
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.
 

What is a reverse osmosis energy recovery system?

A reverse osmosis energy recovery system is a technology used to lower the energy consumption of a reverse osmosis system. It recovers the energy from the high-pressure concentrate stream and uses it to pressurize the feed water, reducing the amount of energy needed to operate the system.

How does a reverse osmosis energy recovery system work?

A reverse osmosis energy recovery system works by utilizing a device called an energy recovery turbine or pump. This device is placed in the concentrate stream of the reverse osmosis system and uses the high-pressure energy to pressurize the feed water, reducing the energy required to operate the system.

What are the benefits of using a reverse osmosis energy recovery system?

Using a reverse osmosis energy recovery system can result in significant energy savings, typically between 30-60%. This not only reduces operating costs but also helps to reduce the environmental impact of the reverse osmosis process.

Are there any limitations to using a reverse osmosis energy recovery system?

One limitation of using a reverse osmosis energy recovery system is that it may not be suitable for systems with a high concentration of suspended solids or particles in the feed water. These particles can cause fouling and damage to the energy recovery device, reducing its effectiveness.

How do you maintain a reverse osmosis energy recovery system?

Maintenance of a reverse osmosis energy recovery system involves regular cleaning and inspection of the energy recovery device to ensure it is functioning properly. It is also important to monitor the feed water quality and make any necessary adjustments to prevent fouling and damage to the system.

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