Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...
Reexamination Certificate
2008-09-09
2008-09-09
Drodge, Joseph W (Department: 1797)
Liquid purification or separation
Processes
Liquid/liquid solvent or colloidal extraction or diffusing...
C210S257200, C210S259000, C210S321690, C210S427000, C210S650000, C210S806000
Reexamination Certificate
active
10471935
ABSTRACT:
A filtering system comprising an inlet (11) for liquid to be filtered and an outlet (9) for filtered liquid, as well as filtering means, which system is characterized in that the filtering means, placed in series comprise: a first filter (2) comprising activated carbon with the capability to also remove particles that are larger than approximately 0.5 μm; an ultrafiltration membrane (5) for the removal of particles that are larger than approximately 0.02 μm; a post-treatment filter (14) of activated carbon, optionally provided with a microfiltration membrane (13), wherein the system also comprises a vessel (6) for filtered water located between the ultrafiltration membrane (5) and the post-treatment filter (14), with the option of using the filtered water from the vessel for back-flushing the ultrafiltration membrane (5).
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Scharstuhl Eric
Scharstuhl Johan Jan
Drodge Joseph W
Marshall & Gerstein & Borun LLP
Prime Water Systems GmbH
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