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!

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Membrane filtration for Fecal Coiliforms
Posted: Monday, March 1, 2010 8:33 AM
Joined: 12/18/2009
Posts: 4



We are using the membrane filtration technique for enumurating fecal coliforms SM9222 D . Our secondary treatment plant uses UV for disinfection. Should we doing some recovery enhancement for stressed organisms SM9212 ? Our regulations are silent on the matter. What is commonly done in other juristictions? We discharge into salt water and our discharge limit is 2000 cfu/100mL.


Thank You



Posted: Thursday, May 27, 2010 4:23 PM
Joined: 1/21/2010
Posts: 9

You'd better check that discharge limit of 2,000cfu! I think you mean 200. Unless you WDR's (waste discharge requirements) require you to run that test, you shouldn't have to. The buffers help somewhat in helping stressed bacteria, but not 100% I wouldn't worry about it.