Liquid purification or separation – With gas-liquid surface contact means
Reexamination Certificate
2005-06-21
2005-06-21
Prince, Fred G. (Department: 1724)
Liquid purification or separation
With gas-liquid surface contact means
C210S220000, C261S100000, C096S006000
Reexamination Certificate
active
06908547
ABSTRACT:
An apparatus to transfer gas to or from a liquid has a flexible and oxygen permeable but liquid water impermeable membrane, a flexible and gas permeable spacer, an inlet conduit, an outlet conduit and a non-rigid restrain system. When used for treating wastewater, an aerobic biofilm is culture adjacent the planar elements, an anoxic biofilm is cultivated adjacent the aerobic biofilm and the wastewater is maintained in an anaerobic state. A first reactor for treating wastewater has an anaerobic section, a plurality of gas transfer membrane modules, and an aerobic section. A biofilm is cultivated on the surface of the gas transfer membranes in fluid communication with the anaerobic section. Biological reduction of COD, BOD, nitrogen and phosphorous are achieved. In a second reactor, phosphorous is also removed chemically in a precipitation branch.
REFERENCES:
patent: 2458163 (1949-01-01), Hays
patent: 4126544 (1978-11-01), Baensch et al.
patent: 4181604 (1980-01-01), Onishi et al.
patent: 4328102 (1982-05-01), Bellhouse et al.
patent: 4416993 (1983-11-01), McKeown
patent: 4746435 (1988-05-01), Onishi et al.
patent: 4883594 (1989-11-01), Sekoulov et al.
patent: 5015421 (1991-05-01), Messner
patent: 5034164 (1991-07-01), Semmens
patent: 5116506 (1992-05-01), Williamson et al.
patent: 5126050 (1992-06-01), Irvine et al.
patent: 5149649 (1992-09-01), Miyamori et al.
patent: 5482859 (1996-01-01), Biller et al.
patent: 5486475 (1996-01-01), Kramer et al.
patent: 5518620 (1996-05-01), Eguchi et al.
patent: 5520812 (1996-05-01), Ryhiner et al.
patent: 5543039 (1996-08-01), Odegaard
patent: 6013511 (2000-01-01), Diels et al.
patent: 6183643 (2001-02-01), Goodley
patent: 6531062 (2003-03-01), Whitehill
patent: 6558549 (2003-05-01), Cote et al.
patent: 3544382 (1987-06-01), None
patent: 4440464 (1996-06-01), None
patent: 54-21057 (1979-02-01), None
“Studies of a Membrane Aerated Bioreactor for Wastewater Treatment” by Dr. Michael J. Semmens and Denise Hanus, Cranfield University, Jun. 1999.
“Nitrification and oxygen utilisation in a membrane aeration bioreactor” by Keith Brindle, Tom Stephenson and Michael J. Semmens, Journal of Membrane Science, 1998.
“Bubble-free aeration using membranes: Process analysis” by Pierre Coté, Jean-Luc Bersillon, Alain Huyard and Gérard Faup, Journal Water Pollution Control Federation, Nov. 1998.
“Bubble-free aeration using Membranes: Mass Transfer Analysis” by Pierre Coté, Jean-Luc Bersillon, Alain Huyard, Journal of Memebrane Science, 1989.
Behmann Henry
Cote Pierre Lucien
Husain Hidayat
Pedersen Steven Kristian
Phagoo Deonarine
Bereskin & Parr
Prince Fred G.
Zenon Environmental Inc.
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