Water treatment installation
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United States of America Patent
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Feb 26, 2002
Grant Date -
N/A
app pub date -
Jan 16, 2001
filing date -
Jul 17, 1998
priority date (Note) -
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Abstract
The invention concerns a water treatment method and installation, which consist in subjecting the water to be treated to membrane filtration (1) to satisfy the requirement for a relatively high flowrate of water for ordinary use (UF), subjecting the water that has been subjected to membrane filtering to reverse osmosis filtering (2) to satisfy the requirement for a smaller flowrate of water of improved quality (OS) and, outside periods of production of water filtered by reverse osmosis, sweeping the upstream face of the osmosis membrane (9) with the flow of membrane-filtered water drawn off to be consumed.
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