Liquid purification or separation – Processes – Treatment by living organism
Reexamination Certificate
2005-03-22
2005-03-22
Barry, Chester T. (Department: 1724)
Liquid purification or separation
Processes
Treatment by living organism
C210S220000, C210S739000, C210S745000, C210S195100, C210S097000
Reexamination Certificate
active
06869534
ABSTRACT:
The invention relates to an aerobic wastewater digestion unit useful for degrading organic material dissolved or suspended in a wastewater stream. The wastewater is fed to a vessel, wherein it is circulated by a liquid conveyor between the vessel and a downwardly-directed tube. Expulsion of fluid from the tube into the lower portion of the vessel agitates the liquid in the vessel and disperses into the liquid air that has been entrained in the liquid in the tube. The digester can be operated using varying liquid levels, and is amenable to batch, semi-batch, and continuous operation. The digester is suitable for use in combination with other components of wastewater treatment systems, and can be included as a module in modular wastewater treatment systems.
REFERENCES:
patent: 6086765 (2000-07-01), Edwards
Hannum Chris
Maurer Robert
McDowell Curtis S.
Akin Gump Strauss Hauer & Felf, LLP
Barry Chester T.
Brentwood Industries, Inc.
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