Patent ID: 8052879
Filing Date: 2011-11-08
Classification: B01D

Abstract:
1. A filtration method comprising: passing a first flow containing particulates though a regeneration region and a collection region of a filter assembly, the first flow passing through the filter assembly in a filtering flow direction; collecting a first quantity of particulates from the first flow on the regeneration region and a second quantity of particulates from the first flow on the collection region; terminating the first flow through the regeneration region and passing a second backwashing flow through the regeneration region in a backwashing flow direction; applying ultrasonic energy to the regeneration region, wherein the ultrasonic energy and/or second backwashing flow releases a portion of the first quantity of particulates into the second flow to form a third flow containing particulates; passing a portion of the third flow through the collection region of the filter assembly in a filtering flow direction of the collection region, thereby collecting a third quantity of particulates on the collection region; and terminating the third flow and resuming the first flow through the regeneration region and collection region in the filtering flow direction.