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

Problems with cold weather

Problems with cold weather

(OP)
I am working on a small municipal wastewater treatment plant (50,000 gpd) which is primarily fed by a low pressure sewer system. We have an activated sludge process and the problem we are having is the influent gets too cold in the winter for nitrification (our plant is in northeast Pennsylvania). Originally we thought that we were losing too much heat at the plant but after some field verification, we believe the issue is the sewage influent. We recorded the sewage entering the plant between 1 and 5 degrees Celsius at the worst part of winter. What we believe is happening is that all of the heat is being lost while the sewage sits within the individual onlot grinder pumps.

The only thing I can think of to solve our problem is to heat the influent before it enters with plant with some form of steam injection system or to add another process to the plant with biomedia which has a thermal mass and can provide extra protection for the bugs. Does anyone have any other suggestions?

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