Patent ID: 7540967
Filing Date: 2009-06-02
Classification: B01D,E03F,Y10T

Abstract:
1. A method of separating lightweight grease and heavy solids from waste water comprising passing waste water into a grease trap having a horizontally positioned internal upwardly shaped divider for creating an upper chamber and a lower chamber within the grease trap; wherein passing includes passing waste water from an inlet to the lower chamber and through the lower chamber of the grease trap in a substantially horizontal direction to an outlet from the lower chamber at a rate to cause a current that risks entraining grease in the lower chamber in the waste water flow and permitting grease from the waste water to float from the lower chamber to the upper chamber, holding the floated grease in the upper chamber so that the divider shields the floated grease from the current of a magnitude that can entrain grease in the lower chamber in the waste water flow; and pumping out lightweight grease and heavy solids from the two chambers.