Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...
Reexamination Certificate
2006-03-28
2006-03-28
Walker, W. L. (Department: 1723)
Liquid purification or separation
Processes
Liquid/liquid solvent or colloidal extraction or diffusing...
C210S652000, C210S653000, C210S781000, C210S784000, C210S787000, C210S360100, C210S369000, C210S321760, C210S321850, C210S321780, C210S321790, C210S321800, C210S321870, C210S321880, C210S321890, C210S259000
Reexamination Certificate
active
07018539
ABSTRACT:
A process and apparatus for treating oily wastewater, such as bilge water or ballast water, generated on a ship. The process uses a combination of a centrifugal separation step and a membrane separation step, such as an ultrafiltration step. The membrane separation step uses a dense, non-porous filtration membrane. The process is able to remove both emulsified oil and dissolved oil from the wastewater to low levels.
REFERENCES:
patent: 4748288 (1988-05-01), Bitter et al.
patent: 4915844 (1990-04-01), Imamura et al.
patent: 4963165 (1990-10-01), Blume et al.
patent: 4978454 (1990-12-01), Sweet
patent: 5087370 (1992-02-01), Schultheis et al.
patent: 5108549 (1992-04-01), Wenzlaff et al.
patent: 5133870 (1992-07-01), Heidenreich
patent: 5221480 (1993-06-01), Schultheis et al.
patent: 5265734 (1993-11-01), Linder et al.
patent: 5482634 (1996-01-01), Goerlach-Doht et al.
patent: 5501741 (1996-03-01), McMahon
patent: 5527974 (1996-06-01), Jeromin et al.
patent: 5932091 (1999-08-01), Tompkins et al.
patent: 6187197 (2001-02-01), Haddock
patent: 4237604 (1994-05-01), None
patent: 1456304 (1976-11-01), None
Nunes et al., “Dense hydrophilic composite membranes for ultrafiltration,” Journ. Membrane Sci., 106, p. 49-56 (1995).
Ebert et al., “Solvent resistant nanofiltration membranes in edible oil processing,” Membrane Technology, 107, p. 5-8.
Ly Jennifer H.
Mairal Anurag P.
Ng Alvin
Pinnau Ingo
Wijmans Johannes G.
Membrane Technology and Research, Inc.
Menon Krishnan S.
Walker W. L.
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