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METHODS FOR OSMOTIC CONCENTRATION OF HYPER SALINE STREAMS

  • US 20130233797A1
  • Filed: 03/08/2013
  • Published: 09/12/2013
  • Est. Priority Date: 03/09/2012
  • Status: Abandoned Application
First Claim
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1. A method of recovering solids from an aqueous source, said method comprising:

  • providing a forward osmosis unit comprising;

    a feed chamber having an inlet and an outlet;

    a draw chamber having an inlet and an outlet; and

    a semipermeable membrane positioned between the feed and draw chambers, said membrane having a permeate side in communication with the draw chamber, and a feed side in communication with the feed chamber;

    passing;

    source water through said feed chamber; and

    a draw solution through said draw chamber, said passing causing water from said source water to be drawn through the membrane and into the draw solution, so that a concentrated source water exits from the feed chamber outlet and a diluted draw solution exits from the draw chamber outlet; and

    carrying out one or more of the following;

    (a) recovering solids from said concentrated water source;

    (b) extracting energy from said concentrated water source; and

    (c) returning said diluted draw solution for reuse as a draw solution.

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