Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...
Reexamination Certificate
2006-05-30
2006-05-30
Fortuna, Ana (Department: 1723)
Liquid purification or separation
Processes
Liquid/liquid solvent or colloidal extraction or diffusing...
C210S650000, C210S321780, C210S321800, C210S333100, C210S333010, C210S321690
Reexamination Certificate
active
07052610
ABSTRACT:
Modules of ultrafiltration or microfiltration membranes are arranged in a tank open to the atmosphere to substantially cover the cross sectional area of the tank. A filtration cycle has permeation steps and deconcentration steps. During permeation, supply of feed substantially equals feed removed and little if any aeration is used. During deconcentration, aeration with scouring bubbles is provided with one or both of backwashing and feed flushing. In feed flushing, feed water is supplied to the tank from below the modules. Excess tank water created during deconcentration flows generally upwards through the modules and out through a retentate outlet or overflow at the top of the tank.
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Adams Nicholas William Harcsar
Cadera Jason
Cote Pierre Lucien
Janson Arnold
Pedersen Steven Kristian
Bereskin & Parr
Fortuna Ana
ZENON Environmental Inc.
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