Microporous filter media, filtration systems containing...

Details Microporous filter media, filtration systems containing... Microporous filter media, filtration systems containing...

2006-12-05

2006-12-05

Fortuna, Ana (Department: 1723)

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By treating occluded solids

C264S048000, C264S045100, C264S045300, C427S244000, C427S245000, C427S466000, C428S317100, C428S315500, C428S312200, C210S489000, C210S508000

Reexamination Certificate

active

07144533

ABSTRACT:
The invention is directed to a microbiological interception enhanced filter medium, preferably having an adsorbent prefilter located upstream from the filter medium. Preferably, the prefilter is adapted to remove natural organic matter in an influent prior to the influent contacting the microbiological interception enhanced filter medium, thereby preventing loss of charge on the filter medium. The microbiological interception enhanced filter medium is most preferably comprised of fibrillated cellulose fibers, in particular, lyocell fibers. At least a portion of the surface of the at least some of the fibers have formed thereon a microbiological interception enhancing agent comprising a cationic metal complex. A filter medium of the present invention provides greater than about 4 log viral interception, and greater than about 6 log bacterial interception.

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