×
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

ammonium removal from conc. waste water

ammonium removal from conc. waste water

ammonium removal from conc. waste water

(OP)
Hi,
I have a concentrated waste stream that contains ammonium (sulfates & chlorides)
concentration is high (10-50 g/l), flowrate is small (<0.5m3/hr)

What would be the best technique for removing ammonia?(transformation into nitrates is not an option, use of NaCl0 is not an option)
Will a nitrification denitrification (2 steps bio) be my only choice?
Do I need to dilute?  

RE: ammonium removal from conc. waste water

Have you thought about giving the material away as aqueous ammonia? This material is commonly used as a nutrient.

If you have an existing wastewater treatment plant, you can probably just meter this material in as a nutrient.

RE: ammonium removal from conc. waste water

The ammonium is too concentrated for anoxic biological treatment. It is toxic to autotrophic bacteria needed to denitrify. I like the idea of feeding as a nutrient in an existing biological plant. Look for an industrial plant b/c municipal plants typically have excess nitrogen for nutrient. Typically 5 lbs N is need for 100 lb BOD.

RE: ammonium removal from conc. waste water

air stripping first, then oxidation or bio treatment. but someone may help with more detail, like when to use stripping, when to use bio, and when to oxidize..

RE: ammonium removal from conc. waste water

(OP)
Thank you all, this helps.
The idea of using it as a nutrient is attractive. We have to be very careful about the possible other contaminants, but this is an option. Air stripping? but where does the ammonia go? in the air? This is pollution transfer.
dg47   what would be the maximum allowable concentration for anoxic bio treatment?

RE: ammonium removal from conc. waste water

siretb

I'm not a water engineer, but have you heard of the SHARON process? It's a Dutch technique my company's been involved in.

'SHARON - stable high activity ammonia removal over nitrate'

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