Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...
Patent
1982-09-29
1983-11-08
Sadowski, David R.
Liquid purification or separation
Processes
Liquid/liquid solvent or colloidal extraction or diffusing...
210639, 210652, 210777, 2103232, 21033301, 210340, 210411, 2104332, B01D 1300, B01D 3100
Patent
active
044141130
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 hollow RO fibers wound around foraminous center cores such that the liquid flows in a direction from the outside of the filter elements towards the center cores. The pure permeate liquid passes into the center bores of the fibers and the concentrate liquid passes into the center cores of the elements.
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 hollow RO fibers of the elements to remove particulate matter which would otherwise foul the hollow RO fibers.
REFERENCES:
patent: 3462362 (1969-08-01), Kollsman
patent: 3526001 (1970-08-01), Smith
patent: 3557962 (1971-01-01), Kohl
patent: 3704223 (1972-11-01), Dietzsch et al.
patent: 4002567 (1977-01-01), Konno et al.
Ecodyne Corporation
Sadowski David R.
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