Liquid purification or separation – With gas-liquid surface contact means
Reexamination Certificate
2008-07-08
2008-07-08
Barry, Chester T (Department: 1797)
Liquid purification or separation
With gas-liquid surface contact means
C210S151000, C210S194000, C210S220000, C210S512100
Reexamination Certificate
active
07396453
ABSTRACT:
A system and method for treating wastewater includes a treatment container for receiving and treating wastewater and a mixing/aeration system disposed in the treatment container. Wastewater is pumped under pressure from the treatment container through a solids/liquid separation system, preferably comprising multiple parallel membrane bioreactors, to separate the solids and liquids in the wastewater. Liquid retentate from the solids/liquid separation system is cycled back to the treatment container via the mixing/aeration system. The closed-loop system and method for solids/liquid separation and aeration/mixing provides for reduced equipment requirements and energy usage during operation.
REFERENCES:
patent: 5254253 (1993-10-01), Behmann
patent: 6514411 (2003-02-01), Pressley et al.
patent: 2003/0066799 (2003-04-01), Garcia et al.
Barry Chester T
Michael & Best & Friedrich LLP
Procorp Enterprises, LLC
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