Method for removal of water soluble organics from oil process water

摘要

A method for removal of water soluble organics from oil process water is disclosed. The method comprises a step in which free oil is removed from water to be treated by water-wet ultrafiltration to produce a water-rich filtrate stream and a later step in which water soluble organics are removed from the water-rich filtrate stream by passage of the stream through a reverse osmosis membrane. An apparatus useful in such method comprising an ultrafiltration unit (1), a reverse osmosis membrane (2) and means for communication therebetween thereby to permit filtrate from the ultrafiltration unit to be supplied to the reverse osmosis membrane.