I sent this to Chris in e-mail a day or so ago, and post for others that are interested.
Oil/Water seperator are not cheap, they usually start at $2000.00 and go up from there. That is just for the seperator, and not the recovery device to get the water to it.
Here are a few links that will give you a better idea. I do not endorse any of these, they are just for reference.
http://www.higherpowersupplies.com/p.../PW-RW/TWB-LCD
http://www.hydroteksystems.com/flatwork_filtration.htm
http://www.watertreatmenttech.com/mightynew.html