Liquid purification or separation – Processes – Including geographic feature
Reexamination Certificate
2006-02-07
2006-02-07
Hoey, Betsey Morrison (Department: 1724)
Liquid purification or separation
Processes
Including geographic feature
C210S754000, C210S756000, C210S758000, C210S903000
Reexamination Certificate
active
06994793
ABSTRACT:
A process for treating ground water containing nitrogen compounds, including ammonia, urea and nitrate, is provided. The ground water is extracted downgradient of the source of contamination and mixed with a chemical oxidant to oxidize the nitrogen component to nitrogen gas. The chemical oxidant may be any suitable oxidant, including a halogenated oxidant, such as a hypochlorite, hypobromite or hypoiodite compound, and Fentons reagent, or combinations thereof. The ground water can be further treated as desired to remove residual oxidants, as well as nitrate, to provide a processed water having characteristics suitable for discharge with limited to no adverse impact on the discharge environment.
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Khan Imtiyaz Ahmed
Spalding Roy Follansbee
Banner & Witcoff , Ltd.
Hoey Betsey Morrison
Hydro-Trace Incorporated
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