[michalin_sanders]

I'm not a chemist or student so forgive me if I'm in the wrong place...our company picks up oily waters,,we store it in 6k gallon tanks to let the oil and water separate...then gravity flow water off the bottom..the water still contains many chemicals from anti freeze to paint thinners etc. I'm looking for ideas on what could be done to better clean the water for disposal...letting it evaporate would take too long and using a heat source to would be dangerous and require a different type of license to do so. "legally" and legal we are. if we could recycle 100 gal. a day safely and ethically correct we would like to do so..thanks

[The Jar]

How clean do you need the water and what is it being used for?  Antifreeze (ethylene gycol) is not something you want even trace amounts of in your drinking water.  I am not an environmental chemist so you should really talk to one of those - better yet hire one if your company does this all the time.

If you haven't learned to read phase diagrams yet then now is a good time.  They give you a lot of information, and aren't that hard to use.  This website might help understand the basics:  http://www.uwgb.edu/DutchS/Petrology/beutect.htm . It even has a phase diagram for water + antifreeze.

After reading up some more feel free to ask for clarifications as needed.

[michalin_sanders]

thanks ill research what you have suggested...basically we have to pay to get the oily water disposed of so i wanted to learn how to clean it within our company,,,once it meets the cities specs,, it can be monitored and put into the sewer..