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1. AU2009332546 - Method and plant for managing the clogging of membrane modules and filtration membranes

Office Australia
Application Number 2009332546
Application Date 17.12.2009
Publication Number 2009332546
Publication Date 07.07.2011
Publication Kind A1
IPC
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
14
Ultrafiltration; Microfiltration
22
Controlling or regulating
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
65
Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
02
Membrane cleaning or sterilisation
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
B01D 61/12
B01D 61/22
B01D 65/02
C02F 1/44
CPC
B01D 61/12
Applicants Degremont
Inventors Bonnelye, Veronique
Fernandez Lopez, Francisco
Agents Davies Collison Cave Pty Ltd
Priority Data 08/07390 23.12.2008 FR
Title
(EN) Method and plant for managing the clogging of membrane modules and filtration membranes
Abstract
(EN)
The invention relates to a method for managing the plugging of membrane modules and of filtration membranes, in particular for nanofiltration, ultrafiltration or reverse osmosis for desalinating water, which comprises carrying out consecutive rinsing operations for controlling clogging, in particular biological clogging: evaluating the thickness of the biofilm; starting a rinsing operation at the latest when the evaluated thickness of the biofilm exceeds a first predetermined setpoint value for the biofilm thickness and stopping the rinsing operation not before the biofilm thickness has become lower than a second predetermined setpoint value lower than the first one for the biofilm thickness.