Method and apparatus having reverse osmosis membrane for concentrating solution
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United States of America Patent
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Aug 24, 1993
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N/A
app pub date -
Jun 24, 1991
filing date -
Jun 25, 1990
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Abstract
A method and an apparatus for treating salt water by a multiplicity of reverse osmosis membrane modules or a structure constituted by combining a multiplicity of reverse osmosis membrane modules and an evaporating device and thereby capable of efficiently treating it while preventing excessively large energy consumption. Salt water is passed through a plurality of reverse osmosis membrane modules so as to be separated into desalted water of a potable water level and high density concentrated water the salinity quality of which is 80,000 to 120,000 ppm.
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