Liquid purification or separation – Recirculation – Serially connected distinct treating or storage units
Patent
1998-06-11
2000-07-25
Hruskoci, Peter A.
Liquid purification or separation
Recirculation
Serially connected distinct treating or storage units
210199, 210207, 210220, 2102212, 210256, C02F 320
Patent
active
06093316&
ABSTRACT:
A sewage treatment apparatus including a treatment tank with a floor and walls and having an upper aperture. A hopper having a clarifier chamber with upper and lower apertures is centrally disposed on hopper supports in the treatment tank, maintained at a predetermined height. A deflector cone is centrally disposed on the tank floor with its vertex received in the lower aperture of the hopper. The exterior of the hopper, the deflector cone and the interior walls of the treatment tank define an aerator chamber, subdivided into a plurality of aerator zones. Diffusers in each aerator zone introduce air into the aerator zones, inducing sewage to flow in a generally vertical orientation in the treatment tank. A cover mounted over the treatment tank aperture maintains a pressurized pocket of air above the sewage for increased oxygenation of the sewage. Treated sewage passes from the aerator zones into the clarifier chamber, then into the environment. Another embodiment of the invention includes a trash trap in fluid communication with the inlet for filtering the sewage prior to treatment. A settling tank in fluid communication with the outlet is provided for filtering the sewage prior to its voidance. A method for sewage treatment is also provided.
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