Brine concentration

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United States of America Patent

PATENT NO 11439953
APP PUB NO 20200316526A1
SERIAL NO

16852134

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Abstract

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A process for separating solvent from a feed solution, said process comprising: contacting a feed solution comprising solutes dissolved in a solvent with one side of a nanofiltration membrane, applying hydraulic pressure to the feed solution, such that solvent and some of the dissolved salts from the feed solution flow through the nanofiltration membrane to provide a permeate solution on the permeate-side of the nanofiltration membrane and a concentrated solution on the retentate-side of the nanofiltration membrane; contacting the permeate solution from the nanofiltration membrane with one side of a reverse osmosis membrane and applying hydraulic pressure to the permeate solution, such that solvent from the permeate solution flows through the reverse osmosis membrane to leave a concentrated solution on the retentate-side of the reverse osmosis membrane, using the concentrated solution from the retentate-side of the reverse osmosis membrane as at least part of the feed solution to the nanofiltration membrane; withdrawing at least a portion of the concentrated solution from the retentate-side of the nanofiltration membrane.

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Patent Owner(s)

Patent OwnerAddress
MICROSAIC SYSTEMS PLCWOKING SURREY GU21 5BX

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Moore, Brian James Guildford, GB 3 9
Nicoll, Peter George Guildford, GB 3 9

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