Liquid purification or separation – Processes – Treatment by living organism
Reexamination Certificate
2006-10-31
2006-10-31
Prince, Fred G. (Department: 1724)
Liquid purification or separation
Processes
Treatment by living organism
C210S617000, C210S259000, C210S903000
Reexamination Certificate
active
07128839
ABSTRACT:
A process and system for enhanced nitrogen removal in a wastewater treatment facility comprises a constructed wetlands and a recirculating sand filter. The effluent from the constructed wetlands passes through the recirculating sand filter to facilitate ammonia conversion to nitrates. A portion of the wastewater is recycled from the recirculating sand filter to the constructed wetlands to provide for anaerobic denitrification of the wastewater in a nutrient rich environment.
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Flowers David A.
Vik Thomas E.
Prince Fred G.
Whyte Hirschboeck Dudek SC
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