HIGH TEMPERATURE REMOVAL OF ORGANIC COMPOUNDS FROM WASTE WATER USING REVERSE OSMOSIS

摘要

There is disclosed a process of recovering water from waste water generated by an aromatic acid purification process. The waste water contains salts and organic acids. The process comprises the step of passing a feed stream of said waste water through a reverse osmosis membrane at a temperature equal to, or higher than, the saturation temperature of the salts and organic acids in said waste water to produce a permeate stream. The permeate stream has less salts and organic acids relative to the feed stream.