| CPC B01D 61/002 (2013.01) [B01D 2311/25 (2013.01); B01D 2311/2653 (2013.01); B01D 2313/243 (2013.01); B01D 2317/022 (2013.01); B01D 2317/06 (2013.01)] | 10 Claims |
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1. A system for separating a fluid, the system comprising:
a plurality of osmosis modules operably coupled together, the plurality of osmosis modules including a first osmosis module and a final osmosis module, at least some of the plurality of osmosis modules including:
an osmosis membrane;
a feed side on a first side of the osmosis membrane;
a draw side on a second side of the osmosis membrane;
a feed inlet operably coupled to the feed side;
a draw inlet operably coupled to the draw side;
a feed outlet operably coupled to the feed side;
a draw outlet operably coupled to the draw side;
a feed recirculation loop operably coupled to the feed inlet, the feed outlet, and a feed inlet of a downstream osmosis module relative to the feed recirculation loop;
a draw recirculation loop operably coupled to the draw inlet, the draw outlet, and a draw inlet of a downstream osmosis module relative to the draw recirculation loop;
one or more first valves operably coupled to the feed recirculation loop; and
one or more second valves operably coupled to the draw recirculation loop,
wherein the one or more first valves and the one or more second valves are disposed above the feed recirculation loop and the draw recirculation loop,
wherein each osmosis module is configured to operate in a co-current flow such that a feed stream and a draw stream are configured to:
enter the osmosis module at the feed inlet and the draw inlet, respectively;
travel through the osmosis module in a same direction; and
exit the osmosis module at the feed outlet and the draw outlet, respectively; and
wherein a bulk feed stream flows from the first osmosis module to the final osmosis module, and a bulk draw stream flows from the final osmosis module to the first osmosis module.
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