Water treatment for increasing recovery of a resource from a reservoir

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United States of America Patent

PATENT NO 11473411
APP PUB NO 20200217185A1
SERIAL NO

16735927

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Abstract

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A first stream of an aqueous solution flows through an upstream desalination or nanofiltration system. A second stream of the aqueous solution is mixed with the diluate output from the upstream desalination system or with the diluate or concentrate output from the upstream nanofiltration system with a flow ratio of the second stream of the aqueous solution to the feed stream of <0.47 or >0.63. A liquid composition flows into the concentrate channels of an electrically driven separation apparatus, while the feed stream flows into at least the diluate channels at a ratio of 0.3 to 0.81 to the flow of the liquid composition. An applied voltage selectively draws monovalent ions from the feed stream in the diluate channels through the monovalent-selective ion exchange membranes into the concentrate channels to produce a treated diluate having a sodium chloride ratio (SCR)<0.7.

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Patent Owner(s)

  • MASSACHUSETTS INSTITUTE OF TECHNOLOGY

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Lienhard, John H Lexington, US 38 846
Nayar, Kishor Govind Houston, US 3 7

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