Liquid purification or separation – Processes – Treatment by living organism
Reexamination Certificate
2006-03-21
2006-03-21
Hruskoci, Peter A. (Department: 1724)
Liquid purification or separation
Processes
Treatment by living organism
C210S629000, C210S630000, C210S903000
Reexamination Certificate
active
07014769
ABSTRACT:
The present invention is a method for reducing the nitrate concentration in wastewater within a wastewater treatment apparatus configured to define an aeration zone and a quiescent zone or dilution zone. The method comprises the step of ceasing airflow into the aeration zone for a predetermined time period or until the dissolved oxygen level within the wastewater has reached a predetermined threshold. The method also comprise the step of mixing the wastewater in the aeration zone to prevent suspended particles within the wastewater in the aeration zone from settling and to avoid substantially disturbing the quiescence of the quiescent zone.
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Arcemont, III Murphy M.
Catanzaro Michael D.
Cox Christopher E.
Cox Raleigh L.
Guy Brenda
Hruskoci Peter A.
Jones, Walker, Waechter, Poitevent, Carriere & Denegre, L.L
Pentair Pump Group, Inc.
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