Column filter using bundles of long fibers

Details Column filter using bundles of long fibers Column filter using bundles of long fibers

B - Operations, Transporting

01

D

182/19

B01D 35/10 (2006.01)

Patent

CA 1325176

ABSTRACT A column filter using bundles of long fibers is disclosed. The bundles of long fibers are fixed at their lower end portions but are free-standing at their upper end portions. The length of the fibers in the bundles may preferably be longer than 1,000 mm but shorter than 3,000 mm - especially longer than 2,000 mm but shorter than 3,000 mm. During operation, the bundles may be compressed to a height of 80-30%, generally 50-40% of their original height. Holders for the respective bundles of long fibers, each of said holders being formed of a cap and a tube communicating to each other, said cap defining orifices and said tube defining a slot, may preferably be provided on a perforated plate arranged transversely in a lower interior part of the shell with the cap and tube being located above and below the perforated plate, respectively. The holders cover substantially all perforations of the perforated plate. The lower end portion of each of the bundles is fixed to a lower periphery of a side wall of the associated cap. The column filter can be backwashed efficiently with a fluid such as compressed air and/or backwashing water.

600805

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