Cyclic aeration system for submerged membrane modules

Details Cyclic aeration system for submerged membrane modules Cyclic aeration system for submerged membrane modules

2009-10-07

2010-10-26

Bushey, Scott (Department: 1797)

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

C210S644000, C210S321790, C210S321840, C210S321880, C261S124000

Reexamination Certificate

active

07820050

ABSTRACT:
An aeration system for a submerged membrane module has a set of aerators connected to an air blower, valves and a controller adapted to alternately provide a higher rate or air flow and a lower rate of air flow in repeated cycles. In an embodiment, the air blower, valves and controller, simultaneously provide the alternating air flow to two or more sets of aerators such that the total air flow is constant, allowing the blower to be operated at a constant speed. In another embodiment, the repeated cycles are of short duration. Transient flow conditions result in the tank water which helps avoid dead spaces and assists in agitating the membranes.

REFERENCES:
patent: 4647377 (1987-03-01), Miura
patent: 4876006 (1989-10-01), Ohkubo et al.
patent: 4923614 (1990-05-01), Engelbart
patent: 5192456 (1993-03-01), Ishida et al.
patent: 5209582 (1993-05-01), Sunaoka et al.
patent: 5209852 (1993-05-01), Sunaoka et al.
patent: 5248424 (1993-09-01), Cote et al.
patent: 5480553 (1996-01-01), Yamamori et al.
patent: 5607593 (1997-03-01), Cote et al.
patent: 5639373 (1997-06-01), Mahendran et al.
patent: 5643455 (1997-07-01), Kopp et al.
patent: 5783083 (1998-07-01), Henshaw et al.
patent: 5878374 (1999-03-01), Buchanan et al.
patent: 5910250 (1999-06-01), Mahendran et al.
patent: 5922201 (1999-07-01), Yamamori et al.
patent: 5944997 (1999-08-01), Pedersen et al.
patent: 6042677 (2000-03-01), Mahendran et al.
patent: 6077435 (2000-06-01), Beck et al.
patent: 6162020 (2000-12-01), Kondo
patent: 6193890 (2001-02-01), Pedersen et al.
patent: 6245239 (2001-06-01), Cote et al.
patent: 6280626 (2001-08-01), Miyashita et al.
patent: 6284135 (2001-09-01), Ookata
patent: 6319411 (2001-11-01), Cote
patent: 6325928 (2001-12-01), Pedersen et al.
patent: RE37549 (2002-02-01), Mahendran et al.
patent: 6402955 (2002-06-01), Ookata
patent: 6550747 (2003-04-01), Rabie et al.
patent: 6656356 (2003-12-01), Gungerich et al.
patent: 6706189 (2004-03-01), Rabie et al.
patent: 6863823 (2005-03-01), Cote
patent: 6881343 (2005-04-01), Rabie et al.
patent: 7186343 (2007-03-01), Rabie et al.
patent: 7198721 (2007-04-01), Cote et al.
patent: 7347942 (2008-03-01), Cote et al.
patent: 7625491 (2009-12-01), Cote et al.
patent: 2001/0027951 (2001-10-01), Gungerich et al.
patent: 721064 (1998-07-01), None
patent: 3318412 (1984-11-01), None
patent: 0937494 (1999-08-01), None
patent: 58141796 (1983-09-01), None
patent: 06057302 (1985-01-01), None
patent: 61107905 (1986-05-01), None
patent: S6338884 (1986-07-01), None
patent: 62250908 (1987-10-01), None
patent: 63143905 (1988-06-01), None
patent: 6436099 (1989-03-01), None
patent: 01168304 (1989-07-01), None
patent: 4180821 (1992-06-01), None
patent: 04250898 (1992-09-01), None
patent: 4256425 (1992-09-01), None
patent: 04265128 (1992-09-01), None
patent: 08004722 (1992-09-01), None
patent: 2641341 (1993-01-01), None
patent: 05096136 (1993-04-01), None
patent: 05285348 (1993-11-01), None
patent: 06285496 (1994-10-01), None
patent: 06343837 (1994-12-01), None
patent: 07024272 (1995-01-01), None
patent: 7100486 (1995-04-01), None
patent: 07185268 (1995-07-01), None
patent: 07185270 (1995-07-01), None
patent: 7185271 (1995-07-01), None
patent: 7251042 (1995-10-01), None
patent: 08024597 (1996-01-01), None
patent: 2904564 (1996-07-01), None
patent: 08187494 (1996-07-01), None
patent: 2946072 (1996-12-01), None
patent: 08323161 (1996-12-01), None
patent: 9038684 (1997-02-01), None
patent: 9075938 (1997-03-01), None
patent: 09192688 (1997-07-01), None
patent: 09220569 (1997-08-01), None
patent: 11128690 (1999-05-01), None
patent: 11244674 (1999-09-01), None
patent: 2000005785 (2000-01-01), None
patent: 2004322100 (2004-11-01), None
patent: 9302779 (1993-02-01), None
patent: 9315827 (1993-08-01), None
patent: 9622151 (1996-07-01), None
patent: 9706880 (1997-02-01), None
patent: 9929401 (1999-06-01), None
patent: 9929630 (1999-06-01), None
Kurita Water Ind Ltd., English Abstract of JP 08024597, 2010.
Daido Hitoshi et al., English Abstract of JP 2000005785, 2010.
Kubota Corp., English Abstract of JP 09220569, 2010.
Kubota Corp., English Abstract of JP 7251042, 2010.
Mitsubishi Rayon Co Ltd, English Abstract of JP 7100486, 2010.
Toshiba Corp, English Abstract of JP 61107905, 2010.
Ahahi Chem Ind Co Ltd, English Abstract of JP 62250908, 2010.
Toray Ind Inc., English Abstract of JP 05096136, 2010.
Summons to Oral Proceedings, regarding European Patent Application No. 99947155.0, dated May 27, 2003.
English Translation of Official Action regarding Japanese Patent Application No. 2000-575802, dated May 26, 2003.
International Preliminary Examination Report regarding International Application No. PCT/CA99/00940 dated Feb. 9, 2001.
Written Opinion regarding International Application No. PCT/CA99/00940 dated Jul. 14, 2000.
Ueda et al., “Effects of Aeration on Suction Pressure in a Submerged Membrane Bioreactor”, Wat. Res., vol. 31, No. 3, pp. 489-494, 1997.
Kaiya et al., “Water Purification Using Hollow Fiber Microfiltration Membranes”, 6th World Filtration Congress, Nagoya, 1993, pp. 813-816.
Finnigan, S., et al., “The Effect of Pulsed Flow on Ultrafiltration Fluxes in a Baffled Tubular Membrane System”, Desalination, 79 (1990) 181-202.
Brewster, et al., “Dean Vortices with Wall Flux in a Curved Channel Membrane System”, Journal of Membrane Science, 81 (1993) 127-137.
White et al., “Optimisation of Intermittently Operated Microfiltration Processes”, The Chemical Engineering Journal, 52 (1993) 73-77.
Tsuchiya, et al., “Visualization of Bubble-Wake Interactions for a Stream of Bubbles in a Two-Dimensional Liquid-Solid Fluidized Bed”, Int. J. Multiphase Flow, vol. 15, No. 1, pp. 35-49, 1989.
United States District Court, Southern District of California, CV No. 03-CV-1996W-JFS, “Complaint for Patent Infringement; Demand for Jury Trial”, Oct. 8, 2003.
United States District Court, Southern District of California, CV No. 03-CV-1996B-AJB, “Defendant United States Filter Corporation's First Amended Answer to Complaint and Counterclaims”, Jan. 12, 2005.
Li, et al., “The Mechanisms of Pulsutile Flow Effect on Crossflow Microfiltration”, IMSTEC Conference, 1996, pp. 150-155.
“Design of Three-Stage, Four-Stage, and Five-Stage ENR Systems”, Design and Retrofit of Wastewater Treatment Plants for Biological Nutrient Removal, 1992, pp. 143-146.
Law, “Recent Developments in Nutrient Removal in Australia, Biological and Biological/Chemical”, Joint Technical Seminar on Sewage Treatment Technology, May 12-14, 1998, pp. 1-20.
Leslie, “Bacterial Fouling of Microfiltration Membranes”, University of South Wales, 1993, p. 73.
Hodgson, “Crossflow Microfiltration of Biomass and Biofluids with Inorganic Membranes”, University of South Wales, 1993, p. 107.
Mills Jr., et al., “Reclamation of Secondary Effluent Using Synthetic Membrane”, Proceedings of the International Membranes Science and Technology Conference, Nov. 12-14, 1996, vol. 1, pp. 39-41.
Sudak, et al., “Pilot Plant Testing of Direct Filtration, Microfiltration and Reverse Osmosis at Water Factory 21”, Microfiltration for Water Treatment Symposium, 1994, pp. 95-96.
Kubota Ltd., English Abstract of JP 01168304, 2010.

Affiliated with

Also associated with

Rating

Cyclic aeration system for submerged membrane modules does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Cyclic aeration system for submerged membrane modules, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cyclic aeration system for submerged membrane modules will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4168472