Decontamination of water by photolytic oxidation/reduction utili

Liquid purification or separation – Processes – Including controlling process in response to a sensed condition

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

210748, 210759, 210908, 250435, 422 24, C02F 132

Patent

active

061173355

ABSTRACT:
A reactor system for decontamination of water by photolytic oxidation utilizing near blackbody radiation, the system comprising (1) a reaction chamber defining an internal space with an inlet and an outlet; and (2) a broadband radiator for generating radiant energy with wavelengths between about 150 nm and about 3 .mu.m, the broadband radiator disposed within the reaction chamber, such that a sufficient dosage of broadband radiation irradiates the contaminants and/or the oxidant within the internal space of the reaction chamber thereby causing photolytic oxidation of the contaminants by direct action of the radiation on the contaminants to break chemical bonds by sustaining a free radical chain reaction of oxidizing components, thus breaking down the contaminants by way of atomic abstraction of the components of the contaminants. In preferred embodiments, at least a portion of the radiant energy is generated in a pulsed mode, such as between about 1 and about 500 pulses per second. In preferred embodiments, the broadband radiator generates radiant energy at a rate of between about 1 kW and about 10 MW., and the resultant dosage rate of broadband radiation is between 1 joule/cm.sup.2 and about 5000 joules/cm.sup.2. In preferred embodiments, the radiant energy is produced by at least one gas filled flashlamp having a gas plasma temperature of between about 9,500.degree. K. and about 20,000.degree. K.

REFERENCES:
patent: 4141830 (1979-02-01), Last
patent: 4179616 (1979-12-01), Coviello et al.
patent: 4230571 (1980-10-01), Dadd
patent: 4273660 (1981-06-01), Beitzel
patent: 4274970 (1981-06-01), Beitzel
patent: 4400270 (1983-08-01), Hillman
patent: 4437999 (1984-03-01), Mayne
patent: 4595498 (1986-06-01), Cohen et al.
patent: 4787980 (1988-11-01), Ackermann et al.
patent: 4792407 (1988-12-01), Zeff et al.
patent: 4836929 (1989-06-01), Baumann et al.
patent: 4849114 (1989-07-01), Zeff et al.
patent: 4849115 (1989-07-01), Cole et al.
patent: 4910438 (1990-03-01), Farnsworth
patent: 4913827 (1990-04-01), Nebel
patent: 5124051 (1992-06-01), Bircher et al.
patent: 5124131 (1992-06-01), Wekhof
patent: 5130031 (1992-07-01), Johnston
patent: 5144146 (1992-09-01), Wekhof
patent: 5151252 (1992-09-01), Mass
patent: 5170091 (1992-12-01), Wekhof
patent: 5178755 (1993-01-01), LaCrosse
patent: 5308480 (1994-05-01), Hinson et al.
patent: 5330661 (1994-07-01), Okuda et al.
patent: 5466367 (1995-11-01), Coate et al.
patent: 5480562 (1996-01-01), Lemelson
patent: 5489442 (1996-02-01), Dunn et al.
patent: 5547590 (1996-08-01), Szabo
patent: 5648592 (1997-07-01), Pierce
patent: 5658530 (1997-08-01), Dunn
patent: 5768853 (1998-06-01), Bushnell et al.
patent: 5786598 (1998-07-01), Clark et al.
patent: 5789755 (1998-08-01), Bender
patent: 5900211 (1999-05-01), Dunn et al.
Water Disinfection with Ultraviolet Light, Aquafine Wedeco Environment Systems, Inc. brochure, 1996.
Ultraviolet--UV Disinfection in Power Cogeneration, Ultrapure Water, vol. 12, No. 5, Jul./Aug. 1995; and.
Photolytic oxidation of contaminated water using a high-energy, pulsed ultra-violet flashlamp operating in the blackbody regime, James B. Bender, 1997 OSA Symposium, UV Sources for Lithography, materials processing, and Biomedical Applications: 2", Oct. 1997.
Auburn Journal, "Two chemists may have `stumbled` onto MTBE solution", Jan. 2, 1998, 1 page.
Associated Press, "New way to purify water that has MTBE", undated, 1 page.
Sacramento Bee, "EPA asked to reject MTBE fuel additive", Dec. 10, 1997, 2 pages.
SN&R, "Trouble on Tap: What's in Sacramento's drinking water?", Dec. 11, 1997, 3 pages.
Komex-H2O Science, University of Southern California, "Literature Review of Technologies for Treatment of Methyl Tertiary Butyl Ether (MtBE) in Drinking Water", Apr. 22, 1997.
World Wide Web publications, "Chevron Gasoline Questions and Answers: Methyl Tertiary Butyl Ether (MTBE)", 8 pages.
World Wide Web publications. "Biodegradation of MTBE and Other Oxygenates", kulpa3.html at www.nd.edu, 2 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

Decontamination of water by photolytic oxidation/reduction utili does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Decontamination of water by photolytic oxidation/reduction utili, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Decontamination of water by photolytic oxidation/reduction utili will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-92578

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