Method for desalinating saltwater using concentration gradient energy

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United States of America Patent

PATENT NO 9162906
APP PUB NO 20120279861A1
SERIAL NO

13553625

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Described herein are a method and system for desalinating saltwater using concentration difference energy. A “five stream” dialytic stack is described that can be used to desalinate saltwater at a relatively high recovery ratio. The dialytic stack may include, for example, one or more drive cells having a paired concentrate and a diluent-c chamber in ionic communication with a product chamber that is adjacent to an anion and a cation discharge chamber each filled with diluent-p. The drive cell applies a drive voltage across the product chamber, and when the drive voltage exceeds a desalination voltage of the product chamber, the saltwater in the product chamber is desalinated. The dialytic stack may accept brine discharged from a first desalination plant as saltwater to be desalinated. Processing the brine in the dialytic stack may decrease its volume, decreasing costs associated with treating or otherwise disposing of the brine.

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Patent Owner(s)

Patent OwnerAddress
SALTWORKS TECHNOLOGIES INC2105 COMMISSIONER STREET VANCOUVER B C V5L 1A4 CANADA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Sparrow, Benjamin Stuart Vancouver, CA 13 178
Tang, James Hing Bong Port Moody, CA 4 29
Zoshi, Joshua Aniket Vancouver, CA 4 29

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