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:

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treatability of Polyethylene Glycols in Digesters
Keith Chapman
Posted: Monday, February 8, 2010 4:14 PM
Joined: 10/2/2009
Posts: 35


We have an industry that wishes to discharge a waste containing Polyethylene Glycol (PEG) which is used in the process of cutting silicon wafers.  It has a COD in the millions (!!) but a BOD of only around 50,000 mg/l, so it does not seem to be very amenable to aerobic treatment.  Incidentally, WW plants have been receiving PEGs for quite a while as certain of them are used in the stuff you get to drink the night before a colonoscopy!!!  Whatever, my question has to do with whether anyone has determined in PEG's are treatable by ANaerobic digestion.  AND...how would you test anaerobic treatability??


PS:  don't confuse PEGs with antifreezes.  They are related to the propylene glycol in antifreeze but are much larger molecules with sizes from 400 to 1000 daltons.