WEF Discussions — Now on LinkedIn!

WEF is pleased to announce the creation of free LinkedIn groups associated with its technical discussion forum topics. Through these LinkedIn groups, members will be able to view and participate in discussions, as well as communicate with one another via direct messages. Share your experiences and knowledge, ask questions and respond to other discussions as frequently as you like!

You must have a LinkedIn profile to join a LinkedIn group; you can create your profile here. If you already have a LinkedIn profile, all you need to do is submit a request to join one or all of the following groups:

Water Environment Federation (Main) | Biosolids | Collection Systems | Nutrients | Stormwater 
Utility Management | Water Reuse | Water for Jobs | Watershed Management | Laboratory Practices 

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grey slime in trickling filters & SBRs
Todd Boling
Posted: Saturday, May 1, 2010 4:19 PM
Joined: 12/23/2009
Posts: 1

We're experiencing a grey slime buildup in our trickling filters and SBRs, which we've never experienced before.  The BOD reduction in our trickling filters have decreased by 20%, thinking it is due to the slime.  We're also seeing bulking and slow settling in our SBRs.  We tried increasing the MLSS concentration without success and have increased settle time with success, but the sludge is still slow settling in the SBRs. We are a municipal plant with the majority of industrial loading.  pop, milk, ice cream, eggs, milk whey.


Does anyone know what it could be?