Liquid purification or separation – Processes – Making an insoluble substance or accreting suspended...
Reexamination Certificate
2005-09-13
2008-12-02
Menon, Krishnan S (Department: 1797)
Liquid purification or separation
Processes
Making an insoluble substance or accreting suspended...
C210S652000, C210S748080, C204S523000, C204S532000, C204S522000
Reexamination Certificate
active
07459088
ABSTRACT:
A process and system for purifying water is disclosed. For example, in one embodiment, the process may be used to remove a divalent salt, such as calcium sulfate, from a water source in order to prevent the divalent salt from precipitating during the process. The water source, for instance, may be fed to an ion separating device, such as an electrodialysis device. In the electrodialysis device, an ion exchange takes place between the divalent salt and another salt, such as a monovalent salt to produce two concentrated salt streams that contain salts having greater solubility in water than the divalent salt. In one embodiment, the two salt streams that are produced may then be combined to precipitate the divalent salt in a controlled manner. During the process, various other components contained within the water feed stream may also be removed from the stream and converted into useful products. In one particular embodiment, the process is configured to receive a byproduct stream from a reverse osmosis process.
REFERENCES:
patent: 3372101 (1968-03-01), Kollsman
patent: 3933610 (1976-01-01), Ehara et al.
patent: 4036749 (1977-07-01), Anderson
patent: 4083781 (1978-04-01), Conger
patent: 4141825 (1979-02-01), Conger
patent: 4808287 (1989-02-01), Hark
patent: 4999095 (1991-03-01), Chlanda et al.
patent: 5064505 (1991-11-01), Borgren
patent: 5124012 (1992-06-01), Berleyev
patent: 5238574 (1993-08-01), Kawashima et al.
patent: 5284589 (1994-02-01), Tegtmeyer et al.
patent: 5376250 (1994-12-01), Hamano
patent: 5385650 (1995-01-01), Howarth et al.
patent: 5458781 (1995-10-01), Lin
patent: 5510394 (1996-04-01), Hodgdon
patent: 5587083 (1996-12-01), Twardowski
patent: 5626904 (1997-05-01), Frederiksen
patent: 5928853 (1999-07-01), Yamamoto
patent: 6030535 (2000-02-01), Hayashi et al.
patent: 6187201 (2001-02-01), Abe et al.
patent: 6391205 (2002-05-01), McGinnis
patent: 6508936 (2003-01-01), Hassan
patent: 6712946 (2004-03-01), Genders et al.
patent: 6814865 (2004-11-01), Aminabhavi et al.
patent: 2001/0040093 (2001-11-01), Mani
patent: 2002/0005356 (2002-01-01), Mazur et al.
patent: 2002/0166758 (2002-11-01), Vinz
patent: 2004/0055955 (2004-03-01), Davis
patent: 759275 (1956-10-01), None
Search Report and Written Opinion for PCT/US05/32419, Aug. 15, 2006.
English Abstract of JP07047365 dated Feb. 21, 1995, European Patent Office.
English Abstract of JP09276864 dated Oct. 28, 1997, European Patent Office.
English Abstract of JP2001259644 dated Aug. 25, 2001, European Patent Office.
English Abstract of JP2001259376 dated Aug. 25, 2001, European Patent Office.
Article- Al-Sofi. “Seawater Desalination- SWCC Experience and Vision.”Desalination. vol. 135, 2001: 121-139.
Article- Pontie et al. “Seawater Nanofiltration: Fiction or Reality.”Desalination. vol. 158, 2003:277-280.
Article- Wen et al. Modeling the Cross Flow Spirally Wound Electrodialysis (SpED) Process.Desalination. vol. 103, 1995:165-176.
Article- Wen et al. “Spirally Wound Electrodialysis (SpED) Modules.”Desalination. vol. 101, 1995:79-91.
Article- Tanka et al. “Ion-exchange Membrane Electrodialystic Salt Production Using Brine Discharged from Reverse Osmosis Seawater Desalination Plant.”Journal of Membrane Science. vol. 222, 2003:71-86.
Lacey et al. “Industrial Processing with Membranes.” Wiley-Interscience. Aug. 1972:83-106.
Published report by Atsushi Tomita based on the lecture titled “Salt & Chlor-Alkali Plant in Kuwait by All-membrane Process” given at the 33rdElectrodialysis Symposium held on Nov. 10, 1987.
Product Specification sheet for Filmtec Membranes published May 2002.
Book published by Wiley-Interscience. Aug. 1972; pp. 83-106 by Robert E. Lacey et al. entitled Industrial Processing with Materials.
Dority & Manning P.A.
Menon Krishnan S
The University of South Carolina
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