Pall Corporation

Michael R Gildersleeve

Tony Alex

Peter J Degen

Thomas C Gsell

David B Pall

Brian T Muellers

Joseph W Dehn, Jr

Luis Rios

M JoAnna Abes

A vibratory separation system having a drive mechanism for imparting a vibratory motion to a membrane module to enhance filtration. The membrane module comprises one or more filter elements secured to one another, each having a permeable membrane. The vibratory motion imparted to the membrane module generates a dynamic flow boundary layer at the permeable membranes. This fluid shear boundary layer, in turn, generates lift, thereby inhibiting fouling of the membranes.

Vibratory separation systems and membrane separation units

The present invention provides a supported membrane assembly comprising a membrane adhered to a support material by way of a nonwoven web of multicomponent fibers therebetween, wherein the multicomponent fibers comprise a first polymer and a second polymer such that the second polymer is present on at least a portion of the surface of the multicomponent fibers and has a softening temperature below the softening temperatures of the first polymer, the membrane, and the support material, and the supported membrane assembly has a water flow rate at least about 20% of the water flow rate of the membrane alone. The present invention also provides a filter element comprising a housing and such a supported membrane assembly, as well as a method of preparing such a supported membrane assembly and methods of using such a supported membrane assembly.

Dynamic supported membrane assembly and method of making and using it

Composite structure having a porous filter medium and a method for

The present invention provides a supported fibrous web assembly comprising a support material adhered to a nonwoven web of multicomponent fibers comprising a first polymer and a second polymer such that the second polymer is present on at least a portion of the surface of the multicomponent fibers and has a softening temperature below the softening temperatures of the first polymer and the support material, wherein the supported fibrous web assembly has a water flow rate of at least about 20% of the water flow rate of the nonwoven web of multicomponent fibers alone. The present inventive supported fibrous web assembly can further comprise a second fibrous web, which is adhered to the nonwoven web of multicomponent fibers such that the nonwoven web of multicomponent fibers is positioned between the second fibrous web and the support material, and wherein the supported fibrous web assembly has a water flow rate of at least about 20% of the water flow rate of the second fibrous web alone. The present invention also provides a filter element comprising a housing and such a supported fibrous web assembly, as well as a method of preparing such a supported fibrous web assembly and methods of using such a supported fibrous web assembly.

Supported fibrous web assembly

The present invention provides a method of pretreating a porous medium for use in filtering a protein-containing fluid, such as milk, beer, wine, or the like, which method comprises contacting a porous medium with an aqueous citrate solution prior to passing the protein-containing fluid through the porous medium.

Method of pretreating a porous medium

The present invention provides a method of treating a clogged porous medium comprising contacting a porous medium clogged in the course of filtering a protein-containing fluid, such as milk, beer, or wine, with an aqueous citrate solution.

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Nesconset, NY, United States of America

Michael R Gildersleeve