Liquid purification or separation – Processes – Treatment by living organism
Reexamination Certificate
2007-10-09
2007-10-09
Barry, Chester T. (Department: 1724)
Liquid purification or separation
Processes
Treatment by living organism
C210S620000, C210S631000, C210S754000, C210S755000, C210S780000, C210S756000, C210S764000
Reexamination Certificate
active
11141273
ABSTRACT:
A method utilizing chlorine dioxide and nitrous acid or other non-charged chemical species for the treatment of biosolids to destroy pathogens is provided. The method uses chlorine dioxide to modulate the ORP of the matrix, acidification of the sludge (biosolids) to a pH of less than 4.0, and provides for the addition of nitrous acid for enhanced disinfection in a closed system to prevent volitalization.
REFERENCES:
patent: 5281341 (1994-01-01), Reimers et al.
patent: 2004/0180015 (2004-09-01), Kross et al.
Mussari Frederick P.
Reimers Robert S.
Schmitz Wilfried
Barry Chester T.
FKOS, LLC
Morrison & Foerster / LLP
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