US 12,404,187 B2
Double-acting piston batch reverse osmosis desalination assembly and method
David Warsinger, West Lafayette, IN (US); Sandra Cordoba, West Lafayette, IN (US); and Abhimanyu Das, Sunnyvale, CA (US)
Assigned to Purdue Research Foundation, West Lafayette, IN (US)
Appl. No. 17/764,527
Filed by Purdue Research Foundation, West Lafayette, IN (US); David Warsinger, West Lafayette, IN (US); Sandra Cordoba, West Lafayette, IN (US); and Abhimanyu Das, West Lafayette, IN (US)
PCT Filed Sep. 30, 2020, PCT No. PCT/US2020/053473
§ 371(c)(1), (2) Date Mar. 28, 2022,
PCT Pub. No. WO2021/067397, PCT Pub. Date Apr. 8, 2021.
Claims priority of provisional application 62/908,698, filed on Oct. 1, 2019.
Prior Publication US 2022/0340453 A1, Oct. 27, 2022
Int. Cl. C02F 1/44 (2023.01); C02F 1/00 (2023.01); C02F 103/08 (2006.01)
CPC C02F 1/441 (2013.01) [C02F 1/008 (2013.01); B01D 2313/36 (2013.01); C02F 2103/08 (2013.01); C02F 2201/005 (2013.01); C02F 2201/009 (2013.01); C02F 2209/03 (2013.01); C02F 2209/05 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An assembly for reverse osmotically desalinating water, comprising:
a source containing feed water to be desalinated;
a high-pressure tank having a first portion and a second portion and a movable piston wall operationally connected therebetween;
a first portion inlet operationally connected to the first portion and a second portion inlet operationally connected to the second portion;
a first portion outlet operationally connected to the first portion and a second portion outlet operationally connected to the second portion;
a first valve having a first first valve inlet, a second first valve inlet, a first first valve outlet in fluidic communication with the first portion inlet and a second first valve outlet in fluidic communication with the second portion inlet;
a high-pressure pump operationally connected to the source and to the first first valve inlet;
a second valve having a first second valve inlet in fluidic communication with the portion outlet and a second second valve inlet in fluidic communication with the second portion outlet and a second valve outlet;
at least one reverse osmosis module having at least one reverse osmosis module inlet connected in fluidic communication with the second valve outlet, at least one brine outlet and at least one desalinated water outlet;
a circulation pump having a circulation pump inlet port connected in fluidic communication with the brine outlet and a circulation pump outlet connected in fluidic communication with the second first valve inlet; and
an electronic controller operationally connected to the first valve, to the second valve, to the high-pressure pump and to the circulation pump.