×
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.

Students Click Here

Dissolved organic carbon in sludge

Dissolved organic carbon in sludge

Dissolved organic carbon in sludge

(OP)
Greetings,
I have a problem with dissolved organic carbon(DOC) in sludge. I need to lower the concentration of dissolved organic carbon in sludge. The sludge is generated from the treatment of waste water. The entry waste water in waste water treatment plant(WWTP) is with the following parameters:
pH=10-13;
Al2O3=96,05g/dm3
Cu = 7,8g/dm3
Cd = 39,22mg/dm3
Undessolved substances = 55 mg/dm3


Mainly we treat sodium aluminate and oil-in water emulsions in our WWTP.

We are using 28% HCL for neutralization the pH.

Simply the process is as following:
The waste water is neutralized with 28% HCL, after that is going to 2 lamellar vessel and proceeds to the sand filter, after sand filter the waste water enter the precipitator and after that is entering the filter press.

Right now we are using flokulant Flopam AN 905 SH. The solution for filter press right now is 0,01%.

The dissolved organic carbon in sludge is 2050mg/kg i need to lower it under 800mg/kg.

Can you give me some advice about method or technology for lowering the dissolved organic carbon in sludge.



Best regards,
George
Replies continue below

Recommended for you

RE: Dissolved organic carbon in sludge

Would you provide the type of industry that is generating this wastewater as well as the flow rate.

RE: Dissolved organic carbon in sludge

(OP)
Hi bimr,

The industry is for extrusion of aluminum and the average flow rate is between 4-5m3 per day.



Best regards,
George

RE: Dissolved organic carbon in sludge

Don't believe that there will be an cost-effective method considering the low daily volume of wastewater that you have.

I would recommend that you try to isolate similar wastes and then try to recycle the wastes. There are many recyclers of oily waste that will reprocess waste oils.

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! Already a Member? Login



News


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