Oil Water Separators 101: Part Two
An oil water separator (OWS) is a flow thru device for removing smaller amounts of oil from larger amounts of water in a moving stream of water.
Why and When to use an OWS?
Usually when you have relatively small amounts of free and un-emulsified oil in your waste-water that is not available to be skimmed off the surface.
Using an Oil Water Separator (OWS) as part of a process for contained water.
Imagine a trench drain in a heavy equipment repair shop where the shop floor is slightly sloped so that any water and/or Oil that is dripped,leaked,dropped or even drained onto the floor runs into this trench drain---and runs into a collection/storage basin where everything ends up.
Now what to do with it? Simple ...have Safety Kleen come get it and haul it off for BIG BUCKS or gently pump this stuff up to a simple small oil water separator sitting on the floor or to the side of the building. The OWS if properly sized will remove all the free UN-emulsified oils and then you can usually put the clean water to drain.
Oily bilge water on a ship--(and there is often LOTS of it)---has to be run thru an approved oily water separator (OWS) before it can be discharged overboard. Usually this OWS has to have an oil content monitor (OCM) on it to verify/control that the oil content of the overboard discharge is below 15 PPM. These specialty marine oily water separators are usually self contained fully operational systems complete with pump and controls and the OCM. These ships can and do often generate thousands of gallons of oily bilge water. It's gotta' go somewhere ? Best to keep it legal with an OWS.
NEXT TIME: #3 OilyNews Blog:
When to use an oil skimmer in conjunction with an oil water separator
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