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1. WO2021232029 - BIMODAL REVERSE OSMOSIS AND PRESSURE RETARDED OSMOSIS FRAMEWORK

Publication Number WO/2021/232029
Publication Date 18.11.2021
International Application No. PCT/US2021/038643
International Filing Date 23.06.2021
IPC
B01D 61/12 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
61Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
02Reverse osmosis; Hyperfiltration
12Controlling or regulating
B01D 61/06 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
61Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
02Reverse osmosis; Hyperfiltration
06Energy recovery
C02F 1/469 2006.1
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
46by electrochemical methods
469by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
C02F 1/44 2006.1
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
44by dialysis, osmosis or reverse osmosis
C02F 1/00 2006.1
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
CPC
B01D 2313/90
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2313Details relating to membrane modules or apparatus
90Other integrated auxiliary systems
B01D 61/002
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
61Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis, ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
002Forward osmosis, direct osmosis
B01D 61/025
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
61Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis, ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
02Reverse osmosis; Hyperfiltration ; ; Nanofiltration
025Reverse osmosis; Hyperfiltration
B01D 61/06
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
61Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis, ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
02Reverse osmosis; Hyperfiltration ; ; Nanofiltration
06Energy recovery
C02F 1/441
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
44by dialysis, osmosis or reverse osmosis
441by reverse osmosis
C02F 1/445
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
44by dialysis, osmosis or reverse osmosis
445by forward osmosis
Applicants
  • PURDUE RESEARCH FOUNDATION [US]/[US]
Inventors
  • RAO, Ashkay Krishna
  • ELIAS, George Maged
  • COAN, Stephen McCoy
  • WREDE, Luke
  • WARSINGER, David Martin
  • LI, Owen R.
  • RENTERIA, Sandra Patricia Cordoba
Priority Data
63/023,75912.05.2020US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) BIMODAL REVERSE OSMOSIS AND PRESSURE RETARDED OSMOSIS FRAMEWORK
(FR) INFRASTRUCTURE BIMODALE D'OSMOSE INVERSE ET D'OSMOSE RETARDÉE PAR PRESSION
Abstract
(EN) A method of operating a dual reverse osmosis/pressure retarded osmosis plant, including when electricity costs less than a first predetermined price, moderate salinity water is pumped into the first portion of a pressure vessel having first and second portions separated by a water permeable/salt impermeable osmotic membrane to yield desalinated permeate in the second portion and brine in the first portion. Further, when electricity costs greater than the first predetermined price, low salinity water is pumped into the second portion and brine is pumped into the first portion to yield pressurized moderate salinity water in the second portion which is run through an energy recovery device to generate electricity. The salinity of the low salinity water is lower than the salinity of the moderate salinity water, and the salinity of the moderate salinity water is lower than the salinity of the brine.
(FR) L'invention concerne un procédé d'exploitation d'une installation double d'osmose inverse/osmose retardée par pression, consistant, lorsque l'électricité coûte moins qu'un premier prix prédéfini, à pomper de l'eau à salinité modérée dans la première partie d'une cuve sous pression comportant des première et seconde parties séparées par une membrane osmotique perméable à l'eau/imperméable au sel pour produire un perméat dessalé dans la seconde partie et de la saumure dans la première partie. En outre, lorsque l'électricité coûte plus que le premier prix prédéfini, de l'eau à faible salinité est pompée dans la seconde partie et de la saumure est pompée dans la première partie pour produire de l'eau à salinité modérée sous pression dans la seconde partie qui est passée à travers un dispositif de récupération d'énergie pour produire de l'électricité. La salinité de l'eau à faible salinité est inférieure à la salinité de l'eau à salinité modérée, et la salinité de l'eau à salinité modérée est inférieure à la salinité de la saumure.
Latest bibliographic data on file with the International Bureau