System for treating wastewater

Liquid purification or separation – Structural installation – Geographic

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C210S199000, C210S202000, C210S205000, C210S206000, C210S252000, C405S053000

Reexamination Certificate

active

07485221

ABSTRACT:
A wastewater treatment system treating excess wastewater from a sewer system includes a generally vertically oriented first shaft structure adapted to receive excess wastewater from the sewer system, a generally vertically oriented second shaft structure spaced apart from the first shaft structure, a connector passage extending between the shaft structures proximate lower ends of the shaft structures, and an effluent passage in fluid communication with the second shaft structure. The treatment system further includes a treating agent dispenser for introducing a treating agent into the wastewater to disinfect at least a portion of the wastewater. During a sufficient rain event, the wastewater flows from the sewer system into the first shaft structure, then through the connector passage and the second shaft structure, and into the effluent passage, such that flow time through the shaft structures is greater than flow time through the connector passage.

REFERENCES:
patent: 1793599 (1931-02-01), Egan
patent: 3592342 (1971-07-01), Shankle
patent: 4457646 (1984-07-01), Laesch
patent: 4865069 (1989-09-01), Lacey
patent: 4892440 (1990-01-01), Regan
patent: 5161911 (1992-11-01), Regan
patent: 5344562 (1994-09-01), Lorenz et al.
patent: 5433845 (1995-07-01), Greene et al.
patent: 5505840 (1996-04-01), Caldwell
patent: 5514278 (1996-05-01), Khudenko
patent: 5752785 (1998-05-01), Tanaka et al.
patent: 5902477 (1999-05-01), Vena
patent: 6000880 (1999-12-01), Halus
patent: 6102618 (2000-08-01), Takada et al.
patent: 6126361 (2000-10-01), Gardiner
patent: 6132626 (2000-10-01), Hart
patent: 6214228 (2001-04-01), Jones et al.
patent: 6318395 (2001-11-01), Anderson et al.
patent: 6371690 (2002-04-01), Monteith
patent: 6503404 (2003-01-01), Ghalib
patent: 6638424 (2003-10-01), Stever et al.
patent: 6663769 (2003-12-01), Hosoya
patent: 6726846 (2004-04-01), Johnstone
patent: 6783683 (2004-08-01), Collings
patent: 6796325 (2004-09-01), Courier
patent: 7022243 (2006-04-01), Bryant
patent: 7025076 (2006-04-01), Zimmerman et al.
patent: 7025887 (2006-04-01), Kirts et al.
patent: 7094337 (2006-08-01), Williams
patent: 7163635 (2007-01-01), Fitzgerald
Franklin L. Burton, “Wastewater Engineering Treatment, Disposal, and Reuse”, Metcalf & Eddy, Inc., revised by George Tchobanoglous, pp. 530-552 (McGraw-Hill, Inc., 3d Edition), date unavailable.
“Design of Municipal Wastewater Treatment Plants”, WEF Manual of Practice No. 8, 4th Edition, ASCE Manuals and Reports on Engineering Practice No. 76, pp. 11-35 through 11-40 (Water Environment Federation, Alexandria, VA and American Society of Civil engineers, Reston, VA 1998).
International Search Report and Written Opinion mailed Oct. 16, 2006, 6 pages.

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

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

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

Rate now

     

Profile ID: LFUS-PAI-O-4067907

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