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1. (US20190054421) OSMOTIC PRESSURE ASSISTED REVERSE OSMOSIS PROCESS AND METHOD OF USING THE SAME

Office : United States of America
Application Number: 16074623 Application Date: 15.12.2016
Publication Number: 20190054421 Publication Date: 21.02.2019
Publication Kind : A1
Prior PCT appl.: Application Number:PCTUS1666995 ; Publication Number: Click to see the data
IPC:
B01D 61/12
B01D 61/58
B01D 61/00
B01D 61/02
C02F 1/44
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
61
Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
02
Reverse osmosis; Hyperfiltration
12
Controlling or regulating
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
61
Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
58
Multistep processes
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
61
Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
61
Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
02
Reverse osmosis; Hyperfiltration
C CHEMISTRY; METALLURGY
02
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
F
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1
Treatment of water, waste water, or sewage
44
by dialysis, osmosis or reverse osmosis
CPC:
B01D 61/002
B01D 61/025
B01D 61/12
B01D 61/58
C02F 1/441
C02F 1/445
C02F 2103/08
Applicants: TREVI SYSTEMS INC.
Inventors: Qiang WEI
John WEBLEY
Elliott BAKER
Gary CARMIGNANI
Priority Data:
Title: (EN) OSMOTIC PRESSURE ASSISTED REVERSE OSMOSIS PROCESS AND METHOD OF USING THE SAME
Abstract: front page image
(EN)

Devices, methods, and systems for producing a concentrated feed stream and a diluted feed stream using a solute stream provided to the low pressure side of the semi-permeable membrane during a reverse osmosis process. The process includes providing a semipermeable membrane having a first side and a second side and introducing a first feed solution stream on the first side of the membrane and a second feed solution stream on the second side, wherein the osmotic pressure of the of the first feed solution stream is greater than or equal to the osmotic pressure of the second feed solution stream. The process further includes exerting hydrostatic pressure on the first side of the membrane such that solvent passes from the first side to the second side thereby producing a concentrated first feed solution stream and a diluted second feed solution stream. Devices and systems for performing the processes are provided.


Also published as:
KR1020180104152IN201817028903CN108778469EP3411133WO/2017/136048