Abstract: Oil and water separation apparatus comprising a reaction chamber having an inlet through which a mixture of oil and water may be introduced. A reaction that extends upwardly from an intake opening therein located in the reaction chamber and out of the chamber. The apparatus also has an ozone generator and a conduit through which ozone may be channeled from the ozone generator into the upwardly extending reaction tube. A pump is provided for pumping water and oil upwardly through the reaction tube entrained with ozone and out of the reaction chamber. A filter is provided for oil oxidized to particulate form by the ozone.