Liquid purification or separation – Processes – Treatment by living organism
Reexamination Certificate
2005-05-17
2005-05-17
Barry, Chester T. (Department: 1724)
Liquid purification or separation
Processes
Treatment by living organism
C210S620000, C210S631000, C210S723000, C210S724000, C210S906000, C210S220000, C210S532100
Reexamination Certificate
active
06893567
ABSTRACT:
Wastewater treatment systems and processes for: removal of solids, pathogens, nitrogen, and phosphorus from municipal and agricultural wastewater include nitrification of wastewater and increasing the pH of the nitrified wastewater by adding a metallic-containing salt and hydroxide to precipitate phosphorus to form a useable effluent having a specified nitrogen:phosphorus ratio that is useful as a fertilizer or spray for remediation of contaminated soils. The presence of infectious microorganism such as enteropathogenic bacteria and picarnoviruses will be reduced in the useable effluent. The precipitated phosphorus is recovered and used to form useable phosphorus products.
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Hunt Patrick G.
Szogi Ariel A.
Vanotti Matias B.
Barry Chester T.
Fado John D.
North Carolina State University
Poulos Gail E.
The United States of America as represented by the Secretary of
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