Liquid purification or separation – Processes – Treatment by living organism
Reexamination Certificate
2010-06-18
2011-10-11
Barry, Chester (Department: 1778)
Liquid purification or separation
Processes
Treatment by living organism
Reexamination Certificate
active
08034243
ABSTRACT:
The disclosed process and system are used for the denitrification of wastewater. The system comprises: an influent concentration analyzer for measuring an influent dissolved oxygen concentration, an influent nitrate concentration, and an influent nitrite concentration; and a feed chemical controller for providing a feed chemical at a controlled rate. The feed chemical controller is responsive to one or more output signals provided by an automated control loop that accepts input signals from the influent concentration analyzer, which input signals relate to at least two of the influent nitrate concentration, the influent nitrite concentration, and the influent dissolved oxygen concentration.
REFERENCES:
patent: 4681687 (1987-07-01), Mouche et al.
patent: 5556536 (1996-09-01), Turk
patent: 6129104 (2000-10-01), Ellard et al.
patent: 6319407 (2001-11-01), Maatta et al.
patent: 6632365 (2003-10-01), Payraudeau et al.
patent: 7153429 (2006-12-01), Pedros
patent: 7431839 (2008-10-01), Morris et al.
patent: 2003/0142301 (2003-07-01), Coleman et al.
patent: 2004/0173525 (2004-09-01), Hunniford et al.
patent: 2005/0023224 (2005-02-01), Schmitz et al.
patent: 2007/0144966 (2007-06-01), Janssen et al.
patent: 11-333494 (1999-12-01), None
patent: 2001-170685 (2001-06-01), None
patent: 2002-192164 (2002-07-01), None
patent: 2003-071492 (2003-03-01), None
patent: 2003-266096 (2003-09-01), None
patent: 2005-193158 (2005-07-01), None
patent: 2006-204967 (2006-08-01), None
Puznava et al., “Classical Feedback/Feedforward Control Applied to Methanol Dosing for Post-Denitrification,” Anjou Recherche.
Beemster, et al. “On-Line Analysis of Nitrate and Nitrite in Wastewater without the use of Reagents through Multiple Wavelength Absorbance Spectroscopy,”http://web.archive.org/web/20040822161613/http:|/www.chemscan.com/technicallpdf/asa-63.pdf , posted to web Aug. 22,2004,downloaded Jun. 19, 2010.
CN Office Action in CN Appln No: 200680030948.5 dated May 12, 2010.
US Office Action in U.S. Appl. No. 12/694,768 dated Jun. 25, 2010.
Freed et al., “Enhanced Nutrient Removal Using a Continuous Backwash Filter for Secondary Effluent Denitrification,” USFilter Davco Products.
Hultman et al., “Combined Nitrogen and Phosphorus Removal in a Full-Scale Continuous Up-Flow Sand Filter,”Water Science&Technology, 1994, pp. 127-134, vol. 29, No. 10-11, Great Britain.
Lindberg et al., “Adaptive Control of External Carbon Flow Rate in an Activated Sludge Process,”Water Science&Technology, 1996, pp. 173-180, vol. 34, No. 3-4, Great Britain.
U.S. Appl. No. 12/694,768, filed Jan. 27, 2010, Janssen, Dominic.
Office Action mailed Oct. 5, 2010 in Japan Application No. 2008-528022, with translation.
Office Action mailed Dec. 8, 2010 in U.S. Appl. No. 12/694,768.
Janssen Dominic
McGehee Michael
Barry Chester
Foley & Lardner LLP
Kremer Matthew J.
Parkson Corporation
Villacorta Gilberto W.
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