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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Isopropanol issues
Posted: Monday, August 20, 2012 11:01 AM
Joined: 7/19/2012
Posts: 1


I work for a city facility.

We have an issue with a specific industry who is discharging isopropanol in their watewater. They tried to use other products to replace isopropanol, but there is no solution so far.

Concentration in isopropanol (IPA) in their wastewater is in the vicinity of 500mg/L. Their COD is 1800mg/L (a big part come from IPA).

They told us that there is no pre-treatment available to reduce IPA before discharging in the sewer.

The maximum concentration to discharge in the sewer is 200mg/L.

Is there any pretreatment for IPA?


Thanks for your help!

Posted: Tuesday, August 28, 2012 2:38 PM
Joined: 2/22/2010
Posts: 1

Why can't they use air stripping/scrubbing or salt addition? These are the result of a quick online search. Maybe they aren't being up front with you. It is the industry's responsibility to reduce their discharge to 200 mg/l, not yours to figure it out for them.