Vacuum enhanced direct contact membrane distillation
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United States of America Patent
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Oct 27, 2009
Grant Date -
Jul 6, 2006
app pub date -
Dec 2, 2005
filing date -
Dec 3, 2004
priority date (Note) -
Expired
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Abstract
The present disclosure provides methods and systems for purifying an impaired liquid. In a particular example, the disclosure provides methods and systems for purifying water containing a solute. A feed stream of solute containing water is introduced in a flow chamber. A permeate stream of water at least substantially free of the solute is placed in the flow chamber. A hydrophobic membrane is placed between the feed stream and the permeate stream. A vacuum is applied to the permeate stream. A vapor pressure differential causes water to vaporize from the feed stream, pass through the hydrophobic membrane, and condense in the permeate stream.
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