B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 63/02 (2006.01) B01D 61/18 (2006.01) B01D 61/20 (2006.01) B01D 63/04 (2006.01) C02F 1/44 (2006.01)
Patent
CA 2348186
Elements of immersed, suction driven, ultrafiltration or microfiltration hollow fibre membranes have an upper header and a lower header with the membranes suspended between them. The elements do not include means for holding the headers in position relative to each other. A cassette is made by sliding a plurality of the elements into a frame to place them side by side. The frame restrains the elements in place but the restraint may be released to allow a selected element to be removed in a direction substantially parallel to its headers without disassembling the remainder of the module. The vertical location of cross bars which hold headers may be changed from time to time to maintain the membranes in a slightly slackened condition. The elements are narrow and spaced to promote penetration of the bubbles and tank water into the elements. Cassettes are placed back to back in pairs separated by permeate pipes. The connections between the permeate pipes and the cassettes release when an element is pulled out of the cassette and reseal when the element is replaced in the cassette. The headers are made of an extrusion which may be cut to any desired length. Cassettes may be produce to a variety of desired sizes.
Bereskin & Parr Llp
Zenon Environmental Inc.
Zenon Technology Partnership
LandOfFree
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