How does the Oil Water Separator work?

This oily water separator works on a powerful but simple vortex principle. The Oily water  is pumping tangentially into a cone shaped separator. This creates a spinning vortex which which creates the separation force. The vortex accelerates as it moves down the cone. These strong centrifugal forces separate the heavier water phase to the outside of the vortex while the lighter oil phase moves to the centre. The separated oil is removed through an orifice located in the inlet end and the treated water is discharged through the opposite end.