US Patent Application No: 2004/0217,053

Number of patents in Portfolio can not be more than 2000

Method of cleaning membrane modules

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Abstract

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A method of cleaning a membrane filtration module (6), the module (6) including at least one membrane (8) located in a feed-containing vessel (7), the membrane (8) having a permeable wall which is subjected to a filtration operation wherein feed containing contaminant matter is applied to one side of the membrane wall and filtrate is withdrawn from the other side of the membrane wall. The method comprising the steps of: suspending the filtration operation; performing a cleaning process on the membrane wall to dislodge contaminant matter therefrom into liquid surrounding the membrane (8); performing a high velocity sweep of the feed-containing vessel (7) to remove the liquid containing the dislodged contaminant matter; and recommencing the filtration operation. An improved gas scouring method is also disclosed.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
SIEMENS WATER TECHNOLOGIES CORP.WARRENDALE, PA20

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Stubbs, Anthony James Ryde, AU 3 70
Zha, Fufang West Ryde, AU 83 1602

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Patent Info (Count) # Cites Year
 
EVOQUA WATER TECHNOLOGIES LLC (44)
7,938,966 Backwash method 24 2003
8,372,282 Mixing chamber 0 2003
7,018,533 High solids module 37 2004
6,962,258 Hollow fiber restraining system 34 2004
7,404,896 Modified membranes 31 2004
7,247,238 Poly(ethylene chlorotrifluoroethylene) membranes 40 2004
8,268,176 Backwash 0 2004
* 8,808,540 Module cleaning method 0 2004
8,758,621 Process and apparatus for purifying impure water using microfiltration or ultrafiltration in combination with reverse osmosis 0 2005
7,387,723 Filtration apparatus comprising a membrane bioreactor and a treatment vessel for digesting organic materials 35 2005
7,819,956 Gas transfer membrane 25 2005
8,524,794 Hydrophilic membranes 0 2005
7,931,463 Apparatus for potting membranes 22 2005
7,862,719 Square membrane manifold system 24 2005
* 8,790,515 Reduction of backwash liquid waste 0 2005
* 8,506,806 Methods and apparatus for removing solids from a membrane module 0 2005
8,377,305 Continuously variable aeration 0 2005
7,867,417 Membrane post treatment 4 2005
8,496,828 Cleaning in membrane filtration systems 0 2005
8,048,306 Scouring method 2 2005
7,455,765 Wastewater treatment system and method 27 2006
7,591,950 Submerged cross-flow filtration 28 2006
7,988,891 Monopersulfate treatment of membranes 0 2006
8,858,796 Assembly for water filtration using a tube manifold to minimise backwash 0 2006
7,563,363 System for treating wastewater 25 2006
7,632,439 Poly(ethylene chlorotrifluoroethylene) membranes 29 2007
8,293,098 Infiltration/inflow control for membrane bioreactor 0 2007
8,182,687 Methods of minimising the effect of integrity loss in hollow fibre membrane modules 0 2008
8,318,028 Infiltration/inflow control for membrane bioreactor 0 2008
7,722,769 Method for treating wastewater 25 2008
8,622,222 Membrane cleaning with pulsed airlift pump 0 2008
7,718,065 Filtration method and apparatus 24 2008
7,718,057 Wastewater treatment system 24 2008
8,512,568 Method of cleaning membrane modules 0 2009
8,382,981 Frame system for membrane filtration modules 1 2009
8,652,331 Membrane system backwash energy efficiency 0 2009
8,057,574 Membrane post treatment 0 2009
8,287,743 Membrane cleaning with pulsed airlift pump 1 2010
8,518,256 Membrane module 0 2011
8,262,778 Membrane post treatment 0 2011
8,372,276 Membrane cleaning with pulsed airlift pump 0 2011
8,623,202 Infiltration/inflow control for membrane bioreactor 0 2012
8,840,783 Water treatment membrane cleaning with pulsed airlift pump 0 2013
8,894,858 Method and assembly for water filtration using a tube manifold to minimize backwash 0 2014
 
CRUCELL HOLLAND B.V. (1)
8,845,902 Pneumatic alternating pressure membrane cell separation system 0 2012
 
ITT MANUFACTURING ENTERPRISES, INC. (1)
* 7,118,674 Energy-efficient biological treatment with membrane filtration 3 2004
 
SIEMENS WATER TECHNOLOGIES LLC (1)
* 8,758,622 Simple gas scouring method and apparatus 0 2005
* Cited By Examiner