Oil detection method in an effluent flow of water? 3

[Yobbo]

I am looking for an adequate method to detect oil in an effluent flow. Due to stringent environmental regulations I need to detect quickly if an effluent flow contains traces of oil in order to prevent unacceptable emission of oil into the environment. I have been thinking about a gravitational separator, separarting the oil from the water stream, but then I still have to detect the gathered oil.
If you can help me with this I really would like to hear from you

 

[JLSeagull]

Review this thread.

http://eng-tips.com/viewthread.cfm?qid=227611&page=1

Turner Designs makes an oil in water monitor that may be of interest. This thread includes discussion for thier bilge product.

 

[bimr]

A gravity separator is capable of removing much of the oil, but will typically allow around 10 mg/l to pass through. If you have a stringent regulation, you probably need additional oil removal equipment.

 

[Yobbo]

Thank you for your usefull reactions.

Karel Postulart, The Netherlands
Nuon Power Generation

 

[GarySCWSVI]

A quick test for oil in water is to flake off some flakes from a Camphor Stick (available in most Pharmacies) into a bowl of water. If the flakes spin there is no oil. If they do not spin oil is present. Not a quantitive test but one that indicates presence. Subject lab tests will give the quantity.

Gary Schreiber, CWS VI
The Purolite Co.

 

[hprorelis]

Dear sir
Orelis Environment provides ceramic membrane unit KLEARSEP dedicated to bilge water treatment. Oil detection is done on line using Bilgmon 488 produced by BRANNSTROM - Sweden
Best regards

 

[hprorelis]

Orelis Environment, located in France, provides turnkey plant, installed on board and able to produce seewater oil free (less than 5 ppm).(

http://www.orelis.com)

UF Permeate analysis is done using online specific oil analyser BilgMon 488 -trade mark BRANNSTROM - Sweden
Best regards
Herve PRADELLE
Senior Business Manager
herve.pradelle@orelis.com

 

[shahyar]

If your oil content is more than 10-15 ppm, a "sheen" of oil is even visible for a naked eye.