Apparatus for desalination and purification of water by reverse osmosis and ultrafiltration

摘要

PCT No. PCT/DE84/00255 Sec. 371 Date Sep. 26, 1985 Sec. 102(e) Date Sep. 26, 1985 PCT Filed Nov. 30, 1984 PCT Pub. No. WO85/02552 PCT Pub. Date Jun. 20, 1985.An apparatus for desalination and purification of water by reverse osmosis and ultrafiltration. Such apparatus require seals at the individual modular elements between the untreated water passages and the permeate-withdrawal passages. These seals comprise two sealing rings which are essentially U-shaped, are of similar but inverted shape, and are made of synthetic material having a limited flexibility. Pairs of the sealing rings sealingly abut one another in the central plane of the modular guide plate via respective ones of their arms which extend essentially radially. The second, outward disposed arms sealingly contact an adjacent diaphragm. Disposed on the outer surface of the portion which connects the arms are channels for the withdrawal of the permeate.