Frank C Matunas

US Patent:

44117850, Oct 25, 1983

Filed:

Sep 29, 1982

Appl. No.:

6/427864

Inventors:

Steven P. Yu - Elizabeth NJ
Frank C. Matunas - Point Pleasant NJ
Nikolaus Zwetkow - Maplewood NJ

Assignee:

Ecodyne Corporation - Chicago IL

International Classification:

B01D 3100

US Classification:

2103211

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.

US Patent:

51260522, Jun 30, 1992

Filed:

Feb 7, 1991

Appl. No.:

7/652680

Inventors:

Marvin Lane - Cranford NJ
Frank Matunas - Union NJ

Assignee:

The Graver Company - Union NJ

International Classification:

B01D 6104

US Classification:

210639

Abstract:

A method and apparatus for polishing a condensate is provided wherein the condensate contains both suspended and colloidally dispersed solid impurities, and also intermittent and variable levels of ionic impurities and dissolved silica. When the ionic impurities exceed a preselected level, a finely divided ion exchange resin mixture is first admixed with the condensate at a rate sufficient to reduce the level of such impurities to a preselected level within a preselected contact time period. Thereafter, the resulting condensate is passed through a membrane filtration device to remove such suspended and dispersed solid impurities. A simple, effective and reliable retrofittable apparatus adapted for use with BWR's fitted with precoat filter systems is provided.