US 12,472,467 B1
Reverse osmosis systems
David Ross Mackay Pett, Puebla (MX)
Assigned to Ozono Polaris, S.A. DE C.V., Puebla (MX)
Filed by OZONO POLARIS, S.A. de C.V., Puebla (MX)
Filed on Apr. 21, 2025, as Appl. No. 19/184,453.
Application 19/184,453 is a continuation of application No. PCT/IB2025/050384, filed on Jan. 13, 2025.
Application PCT/IB2025/050384 is a continuation in part of application No. PCT/IB2024/056735, filed on Jul. 10, 2024.
Int. Cl. B01D 61/08 (2006.01); B01D 61/02 (2006.01); B01D 61/10 (2006.01); C02F 1/44 (2023.01)
CPC B01D 61/08 (2013.01) [B01D 61/025 (2013.01); B01D 61/10 (2013.01); C02F 1/441 (2013.01); B01D 2313/18 (2013.01); B01D 2313/243 (2013.01); C02F 2201/005 (2013.01); C02F 2301/046 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A reverse osmosis system comprising:
a pressure vessel comprising a first port, a second port and a permeate outlet;
one or more membrane modules disposed in the pressure vessel, each membrane module having one or more membranes disposed therein, wherein the membranes are configured to permeate, via reverse osmosis, water as a permeate from a concentrate flowing between the first and second ports, wherein the membranes are also configured to block permeation of dissolved solids from the concentrate, and wherein the pressure vessel is configured to flow the permeate out the permeate outlet;
a high pressure pump configured to pressurize feedwater to be added to the concentrate, wherein the high pressure pump includes a high pressure pump inlet through which the feedwater is supplied and a high pressure pump outlet;
a circulation pump configured to circulate the concentrate between the first and second ports, wherein the circulation pump includes a circulation pump inlet and a circulation pump outlet; and
a valved circulation apparatus configured to select between a forward flow mode of the system and a forward discharge mode of the system, wherein:
in the forward flow mode, the high pressure pump outlet is connected to the first port, the circulation pump inlet is connected to the second port and the circulation pump outlet is connected to the first port, such that the circulation pump is configured to circulate the concentrate in a forward flow direction from the first port to the second port, and
in the forward discharge mode, the high pressure pump outlet is connected to the first port, the circulation pump inlet is connected to the high pressure pump inlet and the circulation pump outlet is connected to the first port, such that the circulation pump is configured to discharge the concentrate from the system through a first discharge line connected to the second port;
wherein in the forward discharge mode, a high pressure pump outlet pressure is greater than a predetermined threshold osmotic pressure of the system, and a permeate discharge valve connected to the permeate outlet is closed to prevent permeate production.