Apparatus for aerating and mixing waste water
Patent 4563277 Issued on January 7, 1986. Estimated Expiration Date: 
November 27, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 27, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3182978 3193260 3347537 3530990 3923657 Bubble-shearing diffuser Aeration technology Aerating apparatus Apparatus for the aerobic treatment of liquid waste Device for injecting a gas into a liquid InventorAssigneeApplicationNo. 06/675992 filed on 11/27/1984US Classes:210/220, Submerged fluid inlet210/238, Hand manipulable210/629, And internally circulating the liquid261/122.1, Submerged screen261/124Multiple jetExaminersPrimary: Therkorn, Ernest G.Attorney, Agent or FirmInternational ClassesC02F 3/02 (20060101)C02F 3/02 (20060101) C02F 3/20 (20060101) C02F 3/20 (20060101) B01F 3/04 (20060101) B01F 3/04 (20060101) AbstractA plurality of aerators are arranged in a preselected pattern on the floor of a basin or lagoon containing waste water. Compressed air is supplied to the aerators by aeration pipes anchored by hanger brackets to the floor of the basin. Each aerator has a porous diffuser plate through which the air is passed and released into the waste water in the form of ultra fine air bubbles less than 60 microns in diameter. The air bubbles are generated in an intense manner with a high rate of air flow to increase the mixing action and liquid circulation pattern, and to create turbulent boils at the surface which provide surface aeration from atmospheric air and re-entrainment of air from eddy current circulation.Other References
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