Patent ID: 7311818
Filing Date: 2007-12-25
Classification: B01D

Abstract:
1. A water separation unit comprising: (a) an outer housing having a an inlet with an inlet plane, a discharge tube with a discharge plane, a bottom, a top, and outside walls; (b) an inner housing inside said outer housing wherein said inlet is in communication with said inner housing, said inner housing having a floor and inside walls wherein the floor of said inner housing is not in contact with the bottom of said outer housing thereby defining a bottom space therebetween and wherein said inner walls are not in direct contact with said outer walls thereby defining a side space therebetween; and (c) a plurality of tubes extending upward from said floor to an approximately horizontal tube plane, said tubes in communication with said bottom space; whereby as storm water enters said inner housing through said inlet and builds up from said floor to a top plane, oils in said storm water at a separation plane separate upward from said storm water leaving water below the separation plane and above the tube plane to pass into said tubes and down to said bottom space for discharge of clean water from said water separation unit through said discharge tube.