Patent 7550120 was granted and assigned to SPX Corporation on June, 2009 by the United States Patent and Trademark Office.
An embodiment of the invention includes a cylindrical settler having a longitudinal axis, a conical base centered on the longitudinal axis, a outer wall centered on the longitudinal axis, a mix tank centered on the longitudinal axis and within the outer wall, and a coalescence fence extending from the outer surface of the mix tank.