| CPC B01D 61/002 (2013.01) [B01D 61/0024 (2022.08); B01D 2311/2523 (2022.08); B01D 2311/2653 (2013.01); B01D 2313/243 (2013.01); B01D 2317/022 (2013.01); B01D 2317/06 (2013.01)] | 12 Claims |
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1. A method for separating components form a solution, the method comprising:
passing a feed stream to a plurality of membrane modules in a first direction;
circulating a draw stream to the plurality of membrane modules in a second direction opposite the first direction;
running the feed stream and the draw stream through each of the plurality of membrane modules in a co-current flow, wherein at one or more membrane modules of the plurality of membrane modules the feed stream is circulated through a membrane module in a feed recirculation loop to form a recirculated feed stream corresponding to the membrane module and the draw stream is circulated through the membrane module in a draw recirculation loop to form a recirculated draw stream corresponding to the membrane module;
directing a portion of the recirculated feed stream in each feed recirculation loop to:
a subsequent membrane module in a subsequent feed recirculation loop of the plurality of membrane modules or a concentrated feed stream outlet operably coupled to the plurality of membrane modules; and
the membrane module of the plurality of membrane modules in the feed recirculation loop; and
moving a portion of the recirculated draw stream in each draw recirculation loop to:
a previous membrane module in a previous draw recirculation loop of the plurality of membrane modules or a diluted draw stream outlet operably coupled to the plurality of membrane modules; and
the membrane module of the plurality of membrane modules in the draw recirculation loop.
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