When does it make sense to install an Oil/Water Separator?

When the wastewater stream has the evidence of free floating oil

Flow ranges of 0-5200 gpm

Applications:

Groundwater remediation
Compressor condensate
Refueling depot runoff
Machining coolant oil removal
Vehicle washwater treatment
Oil spill recovery
Bilge ballast water treatment
Stormwater runoff
Mobile separation system
Power plant water treatment
Aircraft wash racks
Tank farm tank bottoms
R.O. Filter pre-treatment
Trench water treatment
DAF/Clarifier pre-treatment
Hydraulic fluid tank dewatering