Abstract: An oil-water separating method and apparatus utilizing the Coanda Effect separating oil from an oil-water mixture in a continuous manner. The device comprises a housing having an inlet port, an outlet port and a pair of offsetted walls. The oil-water mixture enters the housing parallel to the offsetted walls. A pair of concavely curved walls having an apex adjacent the inlet port splits the entering oil-water mixture into two sub-jets. Each sub-jet enters a bounded region where oil is separated from the water before the oil-water mixture exits the housing.

Abstract: An oil-water separating device utilizing the wall attachment effect for srating oil from an oil-water mixture in a continuous manner. The device is comprised of an oil-water mixture inlet nozzle delivering the mixture into a bounded region inside the separator to form a mixture jet which attaches to one wall creating a separation bubble in the bounded region. The bounded region is provided by a cavity formed by two or more plates joined together with an oil collecting chamber provided on top of the bounded region by an additional plate. The oil is captured in the bounded region by the separation bubble and flows into the oil collecting chamber through connecting holes. The oil in the collecting chamber is transferred by an oil outlet, either by siphoning or by means of a metering pump to an oil storage tank. A multiple stage oil-water separator can be provided by forming a plurality of series-connected, bounded regions between the two plates.