Patent ID: 6120684
Filing Date: 2000-09-19
Classification: B01D,E03F

Abstract:
In an apparatus for separating floating and non-floating particulates from drain water wherein said apparatus includes a first chamber for collecting non-floating particles, a second chamber for collecting floating particles, and a third chamber through which treated drain water can be discharged from the apparatus, the improvement wherein an inlet pipe for introducing drain water into the first chamber is tangential to the first chamber to provide a vortex flow of drain water into said first chamber, and an outlet pipe providing flow of drain water from the first chamber to the second chamber has an inlet at the vortex of drain water flow in the first chamber, wherein an outlet from said first chamber to said second chamber is positioned near the bottom of said second chamber and a flow deflection means is positioned adjacent the outlet from said outlet pipe to deflect floating pollutants in the drain water flowing into said second chamber in an upwardly direction whereby to segregate same during peak storm flows.