we have problem with alum sludge, p

we have problem with alum sludge, produced from enhanced coagulation of water. sludge is discharged to Wastewater treatment plant, it is causing odor and some other problems in Wastewater treatment plant operation.
If any one have experiance with this problem please help me.

 

[BobPE]

What are the quantity of flows invloved? The size of the WWTP and the volume of discharge and time of discharge? I would hesitate to think that the alum is the problem at the WWTP and in my experience it is ALWAYS beneficial to some degree. Hovwever, the way in which the alum reaches the plant does cause problems sometimes in the hydraulics of conveyance. It may cause slugs of flow in the conveyance system which in turn moves septic solids settled in the mains to the WWTP.

Please give us a bit more infor if you can...

Bob PE

 

[Chris73]

Please specify the problems occured a bit. Check the pH value of the influent and within the activated sludge tank. Depending on the amount of alum sludge that is the only problem I can think of from top of my head.

 

[goodsludge]

It could be a number of things.

> Did you just start discharging to WWTP? Process may be adapting, but I agree with other responder that it may improve process (but, see below).
> EnCoag may be removing more organics, or supressing treatment pH, which may make it more susceptible to going anaerobic during conveyance to WWTP.
> With EnCoag, did you change coagulants?
> Do you batch discharge, or is it on a regular basis? If you're sending a big dose on a night shift when other contributing flows are low, you could be overloading WWTP.

Give me a call if you want to discuss further

814-867-1477 or e-mail, jdewolfe@mcguireinc.com

 

[bhwtam]

Waste Water Treatment Plant are generally not designed to accept your alum sludge, and if your discharge is huge, it will surely cause problems to their operations.

You may consider these two issues:

1. Instead of discharing the sludge to the WWTP, use centrifudges/presses or similar to dry it and dump for landfills.

2. Dilute the alum sludge before discharging to the WWTP, so that the amount of alum sludge will not be too significant compare with the inflow of sewage. The amount of dilution will be mainly based on the process of the WWTP.

Hope these can help

 

[chuck1941]

Have you considered alternate uses for the sludge?

What is it's detail chemical analysis? Alumina? Sodium? Potassium? etc.