Method and apparatus providing improved throughput and operating life of submerged membranes
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United States of America Patent
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Issued Date -
Oct 6, 2005
app pub date -
Apr 6, 2004
filing date -
Apr 6, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A submerged membrane assembly including a membrane having a first surface, a second surface, and a vertical axis, and which is permeable between the surfaces by molecules of less than a predetermined size. A first fluid compartment in fluid communication with the first membrane surface and that contains at a first column height a first fluid having a first specific gravity, a second fluid compartment in fluid communication with the second membrane surface and that contains at a second column height a second fluid having a second specific gravity, and means for changing the second specific gravity. The second column height being selected relative to the first column height to produce a selected pressure differential across the membrane along the vertical axis at the first specific gravity and the changed second specific gravity.
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