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!

*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.

Jobs

De-aerated Water as Potable Water

De-aerated Water as Potable Water

(OP)
Hi all,

We have excess de-aerated water in Oil and Gas facility that we are planning to treat with RO to produce wash water. We also have requirement for potable water fire water. It will be more cost effective to further treat de-aerated permeate with remineralizer and use as Potable Water.

Are there any issues associated with using de-aerated (DO < 10 ppb) permeate treated with remineralizer as potable water? De-aerated permeate will be first stored in a tank blanketed with either nitrogen or fuel gas. Which should be more suitable?

De-aerated permeate shall also be used as fire water.

Is this feasible?

RE: De-aerated Water as Potable Water

Not sure what you are calling "de-aerated", but there are no issue associated with oxygen content in water regardless of the oxygen content. Oxygen content is not a parameter that is even measured in potable water treatment.

Sometimes, naturally occurring well waters contain dissolved gases and these waters are aerated to remove the dissolved gases. Carbon dioxide will pass through RO membranes, and this gas is typically removed post RO.

RE: De-aerated Water as Potable Water

Water without dissolved oxygen tastes weird. You can test this yourself by boiling some water to de-aerate it, then cooling it and drinking it. A faucet aerator might be enough to re-aerate enough so the taste is normal.

RE: De-aerated Water as Potable Water

Saturation of oxygen is obtained from the oxygen in the atmosphere, in a storage tank for example. In fresh water, dissolved oxygen reaches 14.6 mg/L at 0 ° C and 8.3 mg/L at 25 ° C at atmospheric pressure.

Complaints regarding taste are normally associated with anaerobic conditions that cause reduction of nitrate to nitrite, sulfate reduction to sulfide. This elements will not be present in significant quantities in RO water.

RE: De-aerated Water as Potable Water

If the potable water is to be used for human consumption, it needs to be disinfected. If it is to be used for fire suppression, you should also likely disinfect it so any concerns with MIC (Microbriologically Influenced Corrrosion) can be minimized.

RE: De-aerated Water as Potable Water

Just take your de-aerated water to laboratorium. And then check it with the potable water parameter standard.

By the way.. I think no one will drink that de-aerated water because the taste will be really weird (Sometimes bitter)

Visit my Website : www.on-water.us

RE: De-aerated Water as Potable Water

there is no issue with low DO level in drinking water, but be sure that their should not be anaerobic bacterial growth in potable water.

Krunal Bhosale
http://waterengineer.co.in
All about Water and Wastewater Treatment

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


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close