Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...
Reexamination Certificate
2005-12-15
2009-08-11
Drodge, Joseph W (Department: 1797)
Liquid purification or separation
Processes
Liquid/liquid solvent or colloidal extraction or diffusing...
C210S739000, C210S743000, C210S747300, C210S758000, C210S754000, C210S806000, C405S037000
Reexamination Certificate
active
07572378
ABSTRACT:
A process for irrigation involves monitoring reclaimed water, and treating it when necessary. The reclaimed water is tested with monitors to obtain results for water quality characteristics, including: pH; residual chlorine; and, sodium. These results are inputted to a computerized data handling system for data collection, storage and analysis for comparison to predetermined acceptable ranges for water quality characteristic, and to show any deviation from said acceptable ranges. Either alarms are set off or treatment occurs or both, when deviations are observed. Treatment includes a dechlorination system to correct active chlorine, and, optionally, an oxidation system. There is also a reverse osmosis step for reduction of salts, such as sodium. Other monitors may include one or more of hardness; turbidity; alkalinity; conductivity and nitrates.
REFERENCES:
patent: 4062782 (1977-12-01), Kunst et al.
patent: 4867192 (1989-09-01), Terrell
patent: 5558775 (1996-09-01), Busch, Jr.
patent: 5741416 (1998-04-01), Tempest, Jr.
patent: 5792336 (1998-08-01), Nikolaevsky et al.
patent: 5863433 (1999-01-01), Behrends
patent: 5893975 (1999-04-01), Eifert
patent: 5958241 (1999-09-01), DeBendetto et al.
patent: 5975800 (1999-11-01), Edwards et al.
patent: 6054050 (2000-04-01), Dyke
patent: 6117335 (2000-09-01), Bender
patent: 6132138 (2000-10-01), Haese
patent: 6136186 (2000-10-01), Gonzalez-Martin et al.
patent: 6200466 (2001-03-01), Bender
patent: 6214607 (2001-04-01), Logan
patent: 6607668 (2003-08-01), Rela
patent: 6620329 (2003-09-01), Rosen et al.
patent: 6635177 (2003-10-01), Oswald et al.
patent: 6955765 (2005-10-01), Rosen et al.
patent: 7404899 (2008-07-01), Rosen et al.
Internet Document: “Sewage Monitoring”, Jennifer M. Larson from LLNL Environmental Report for 1995.
Internet Document: “Shortland wastewater treatment plant” brochure; Mar. 31, 2000.
Internet Document: Managing Sewage Discharges to Inland Waters;, EPA Publication 473 of Dec. 1995, EPA Victoria, 1995.
Internet Document: Journal Environmental Monitoring, pp. 161-163 by Edward Urbansky et al, Article entitled Ascorbic acid reduction of active chlorine prior to determining mutagenicity of chlorinated natural organic matter (NOM) published 2000.
Internet Document: “Wastewater Technology Fact Sheet, Dechlorination,”, United States Environmental Protection Agency, Office of Water, Washington, D.C., EPA-832-F-00-022, Sep. 2000.
Hodges Robert D.
Rosen Peter L.
Drodge Joseph W
Glynn, Esq. Kenneth P.
Turf Sentry, Inc.
LandOfFree
Recycled irrigation water treatment system including reverse... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Recycled irrigation water treatment system including reverse..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Recycled irrigation water treatment system including reverse... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4085694