Treatment for reverse osmosis membranes

Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...

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21050038, 210654, B01D 1300

Patent

active

049388720

ABSTRACT:
A process for increasing the salt passage of polyamide reverse osmosis membranes and the resulting membrane is disclosed. The process involves treating the membrane with a dilute aqueous solution of an alkali metal permanganate followed by a stabilization treatment with a dilute aqueous solution of sodium bisulfite or hydrogen peroxide.

REFERENCES:
patent: 3911080 (1975-10-01), Mehl et al.

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