Liquid purification or separation – With gas-liquid surface contact means
Reexamination Certificate
2009-03-16
2009-10-20
Barry, Chester T (Department: 1797)
Liquid purification or separation
With gas-liquid surface contact means
C210S151000, C210S416100, C210S500230, C210S903000, C210S906000
Reexamination Certificate
active
07604733
ABSTRACT:
A biological removal method of phosphorus and nitrogen includes supplying a mixture gas into a gas holder. Inflow water and return water are supplied into the gas holder to make the mixture gas dissolved in the inflow water and the return water. The return water was provided from a granulation biological reaction tank. The inflow water and the return water including the dissolved mixture gas are transported to the granulation biological reaction tank. A nitrogen-based component is removed from the inflow water and the return water using methan-oxidizing bacteria granulated in the granulation biological reaction tank. Treated water without the nitrogen-based component is transported to an anoxic tank for treatment, and discharged from the anoxic tank.
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patent: 7459076 (2008-12-01), Cote et al.
patent: 11-262793 (1999-09-01), None
Williams, Jon Christopher, “Initial Investigations of Aerobic Granulation in an Annular Gap Bioreactor”, Raleigh, 2004.
Ahn Kwang-Ho
Gee Chai-Sung
Kim I-Tae
Kim Kwang-Soo
Kim Sung-Youn
Barry Chester T
Daewoo Engineering & Construction Co., Ltd.
Gozzi Justine A.
Korea Institute of Construction Technology
Sartori Michael A.
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