Liquid purification or separation – Processes – Treatment by living organism
Reexamination Certificate
2011-07-05
2011-07-05
Prince, Fred (Department: 1776)
Liquid purification or separation
Processes
Treatment by living organism
C210S903000
Reexamination Certificate
active
07972513
ABSTRACT:
A process for treating nitrogenous wastewater contains an autotrophic denitrification reaction, a heterotrophic denitrification reaction and a COD removal reaction simultaneously and mixedly taking place in a single reactor. The nitrification reaction is caused by nitrifying bacteria, in which ammonium is oxidized into nitrite. The autotrophic denitrification reaction is caused by autotrophic denitrifying bacteria, in which ammonium used as electron donor and nitrite used as electron acceptor are converted into nitrogen gas and nitrate. The heterotrophic denitrification reaction is caused by heterotrophic denitrifying bacteria, in which nitrate and COD are consumed. It is not necessary to build two separate reactors for aerobic nitrification and anaerobic denitrification, thereby effectively reducing the fabrication and operation cost.
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Chen Chin-Te
Chiang Ming-Kuei
Lee Der-Ming
Lin Jih-Gaw
Sung Keng-Chuan
Bacon & Thomas PLLC
Leaderman & Associates Co., Ltd.
National Chiao Tung University
Prince Fred
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