Methods and apparatus for treating wastewater employing a...

Liquid purification or separation – Processes – Treatment by living organism

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C210S623000, C210S630000, C210S259000, C210S532100, C210S903000, C210S906000

Reexamination Certificate

active

11047296

ABSTRACT:
Methods and apparatus for treating wastewater are described, one method embodiment including the steps of flowing a mixed liquor suspended solids to a high rate clarification stage, forming a clarifier effluent, a first waste activated sludge stream, and a return waste activated sludge stream. The high rate clarifier effluent stream then flows to a membrane stage that includes a membrane media, producing a membrane reject (retentate) stream and a treated effluent (permeate) stream. Optionally, the methods include routing a screened raw wastewater to an anaerobic and/or aerated anoxic stage and introducing a gas comprising oxygen to the wastewater during the aerated anoxic stage, and optionally allowing the product of this stage to flow to an aeration stage prior to the high rate clarification stage.

REFERENCES:
patent: 3423309 (1969-01-01), Albertson
patent: 3482695 (1969-12-01), Rice et al.
patent: 4530569 (1985-07-01), Squire
patent: 4536286 (1985-08-01), Nugent
patent: 4565855 (1986-01-01), Anderson et al.
patent: 4707261 (1987-11-01), Ikeyama et al.
patent: 4747946 (1988-05-01), Ikeyama et al.
patent: 4754009 (1988-06-01), Squire
patent: 4778601 (1988-10-01), Lopatin et al.
patent: 4828772 (1989-05-01), Lopatin et al.
patent: 4867883 (1989-09-01), Daigger et al.
patent: 4957628 (1990-09-01), Schulz
patent: 4992178 (1991-02-01), Chaufer et al.
patent: 5522991 (1996-06-01), Tuccelli et al.
patent: 5565166 (1996-10-01), Witzko et al.
patent: 5651889 (1997-07-01), Wataya et al.
patent: 5698281 (1997-12-01), Bellantoni et al.
patent: 5972220 (1999-10-01), Bailey
patent: 6068134 (2000-05-01), Shurtleff
patent: 6110374 (2000-08-01), Hughes
patent: 6165359 (2000-12-01), Drewery
patent: 6168648 (2001-01-01), Ootani et al.
patent: 6190557 (2001-02-01), Hisada et al.
patent: 6221247 (2001-04-01), Nemser et al.
patent: 6274044 (2001-08-01), Bailey et al.
patent: 6402956 (2002-06-01), Andou et al.
patent: 6406629 (2002-06-01), Husain et al.
patent: 6432310 (2002-08-01), Andou et al.
patent: 6454104 (2002-09-01), Bailey et al.
patent: 6485645 (2002-11-01), Husain et al.
patent: 6524481 (2003-02-01), Zha et al.
patent: 6533937 (2003-03-01), Adachi et al.
patent: 6565747 (2003-05-01), Shintani et al.
patent: 6723244 (2004-04-01), Constantine
patent: 6733675 (2004-05-01), Ando et al.
patent: 6890431 (2005-05-01), Eades et al.
patent: 2003/0205524 (2003-11-01), Chisholm et al.
patent: 61-220792 (1986-10-01), None
Gould, B., Utilizing Spiral Wound Membrane Efficiencies for Ultrafiltration by Enabling Backflush Capabilities, 12th Ann Southwest Chemistry Workshop, Jul. 28, 2003, Dallas, TX.
Trisep Corp., SpiraSep Ultrafiltration Membrane Technology, Spiral Wound Backflushable Ultrafiltration Element, 2003, TriSep Corporation, Goleta, CA.
Ashbrook Corpration, Denitrification, May 15, 2003, 1 page, accessed at http://www.ashbrookcorp.com/learn/denitrification.html.
Ashbrook Corporation, Nitrification, May 15, 2003, 1 page, accessed at http://www.ashbrookcorp.com/learn
itrification.html.
Ashbrook Corporation, Biological Nutrient Removal Systems, May 15, 2005, 1 page, accessed at http://www.ashbrookcorp.com/learn/biological.html.
Ashbrook Corporation, Phosphorous Removal, May 15, 2003, 1 page, accessed at http://www.ashbrookcorp.com/learn/phosphorous.html.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Methods and apparatus for treating wastewater employing a... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Methods and apparatus for treating wastewater employing a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods and apparatus for treating wastewater employing a... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3902814

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.