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

Low pH in Clarigester

Low pH in Clarigester

(OP)
Hello All,
I've come across a treatment plant in upstate NY that has a problem with their Clarigester. The pH in the Clarigester dropped from 6.3 to 5.5. There is also a sweet odor emitting from the Clarigester which is indicative of the low pH.
Would anyone know a possible cause along with a fix or solution to this problem?
Thanks!

RE: Low pH in Clarigester

Aside from mechanical failure, the two most likely causes of
digester process failure are:
• metabolic overloading of the micro-organisms and consequent
pH drop; and
• loss of biomass.

Addition of lime will be necessary to raise the pH to an optimum operating range.

http://www.wrc.org.za/Lists/Knowledge%20Hub%20Item...

http://www.ragsdaleandassociates.com/WastewaterSys...

http://www.iweasite.org/Conferences/plt_ops_conf/2...

RE: Low pH in Clarigester

(OP)
Since I can find out the Alkalinity and Volume of the Clarigester, is there a way to determine how much lime to add to raise the pH?

RE: Low pH in Clarigester

The alkalinity is test is very inexpensive.

Short of that, experiment by adding lime. Lime is also inexpensive.

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