Reverse osmosis hollow fiber filter element

Details Reverse osmosis hollow fiber filter element Reverse osmosis hollow fiber filter element

1982-09-29

1983-10-25

Sadowski, David R.

Liquid purification or separation

Casing divided by membrane into sections having inlet

Energy recovery from treated liquid

2103232, 2104332, 210491, 2104971, B01D 3100

Patent

active

044117850

ABSTRACT:
A method and apparatus for removing dissolved solids from a liquid which utilizes the technique of reverse osmosis (RO). The liquid to be treated is directed into a pressure vessel which contains a plurality of filter elements positioned therein. The filter elements have a layer of hollow RO fibers around a center core area such that the liquid flows in a direction from the outside of the filter elements towards the center core areas. Pure permeate liquid permeates into the center bores of the fibers and concentrate liquid passes into the center core areas. The permeate liquid from the center bores passes into longitudinally extending permeate collection channels which communicate with the center bores over substantially the entire length of the layers of hollow RO fibers. Various structural embodiments of the filter elements are disclosed.
The method and apparatus provide for the backwashing of the filter elements when they become fouled. Further, an outer filter septum may be applied around the layers of hollow RO fibers to remove particulate matter which would otherwise foul the hollow RO fibers.

REFERENCES:
patent: 3455460 (1969-07-01), Manon et al.
patent: 3462362 (1969-08-01), Kollsman
patent: 3557962 (1971-01-01), Kohl

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