Patent ID: 7022236
Filing Date: 2006-04-04
Classification: B01D,C02F,Y02W,Y10S

Abstract:
1. A wastewater treatment system comprising, a) a first tank or zone; b) a second tank or zone separated from the first tank or zone by baffles, walls, or shrouding; c) one or more aerators located in the first tank or zone; d) an air supply, wherein the air supply is adapted to provide at least a higher flow rate of air and a lower flow rate of air; e) an air line which provides a path for air from the air supply to the one or more aerators; and, f) a conduit for transferring mixed liquor from the first tank or zone to the second tank or zone; wherein each of the one or more aerators comprises, i) an aerator body with holes for releasing bubbles from the aerator body or for allowing mixed liquor surrounding the aerator to enter the aerator body; ii) an inlet for air to enter the aerator body connected to the air line; and iii) an outlet for mixed liquor to exit the aerator body, the outlet connected to the conduit.