Method of removing foulants and restoring production of spinal-wound reverse osmosis cartridges

摘要

A method of removing foulants from spiral-wound reverse osmosis cartridges, comprising the steps of: a) freeing the envelopes and webbing from their original confinement; b) soaking the envelopes and webbing in a cleaning solution, specific to the general chemical nature of the foulants found in the webbing and on the surface of the envelopes, for a period of time sufficient to dissolve solubilize soften, and loosen the foulants; c) unwrapping and washing each membrane envelope and layer of webbing to physically remove the foulants therefrom; d) rewinding the membrane envelopes and layers of webbing in spiral configuration about the center product tube while simultaneously drawing a vacuum on the product tube to remove air trapped in the envelopes and enable the memory of the envelopes and webbing to urge themselves into their original tightly-wrapped configuration thereabout; and, e) reconfining the ends of the wrapped layers and resealing the outer surface and one end of the reassembled cartridge against leakage.