×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Energy Recovery Devices for RO Membrane Systems

Energy Recovery Devices for RO Membrane Systems

Energy Recovery Devices for RO Membrane Systems

(OP)
Does anyone have experience/data regarding Brine Energy Recovery devices (i.e. ERI turbo) used on Brackish Water feed (not Seawater).  Is it cost effective for a brackish water feed water or 2 pass RO application?

RE: Energy Recovery Devices for RO Membrane Systems

The answer to your question depends on the expected life of the facility and the cost of electricity in your area.  We included them in a brackish groundwater design near Phoenix but the project was ultimately shelved due to the housing market and the economy.

RE: Energy Recovery Devices for RO Membrane Systems

(OP)
Thanks. What was your theoretical (since the project was shelved) pay back for this device.  What was your operating pressure.  Regards

RE: Energy Recovery Devices for RO Membrane Systems


I do believe that it could still be beneficil, especially if you are running at a lowish recovery (say 70%).....you will essentially transfer the energy from your concentrate stream into the feed flow, reducing the size of your HP pump by 30%.

 

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources