Liquid purification or separation – Processes – Treatment by living organism
Reexamination Certificate
2006-10-25
2008-07-29
Barry, Chester T. (Department: 1797)
Liquid purification or separation
Processes
Treatment by living organism
C210S610000, C210S625000, C210S626000
Reexamination Certificate
active
07404897
ABSTRACT:
An efficient system and process for removing nitrogen from wastewater while enriching seed sludge in the mainstream treatment process. Bioaugmentation of seed autotrophic organisms facilitate the nitrification reactions by enhancing the rates of reaction advantageously within a smaller volume or within a shorter activated sludge solids retention time. Likewise, bioaugmentation of seed denitrification organisms will also enhance rate of reaction within a smaller volume or shorter activated sludge solids retention time. Separate treatment of high ammonia digester reject water is an efficient method to treat nitrogen in recycle streams as well as to enrich the seed nitrifying and denitrifying cultures.
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International Search Report dated Jan. 17, 2008.
Bailey, Jr. Walter F.
Benson Leonard
Constantine Timothy
Daigger Glen T.
Katehis Dimitrios
Barry Chester T.
D.C. Water & Sewer Authority
Dickstein & Shapiro LLP
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