1
Fufang Zha, Edward John Jordan: Apparatus and method for cleaning membrane filtration modules. U S Filter Wastewater Group, Knobbe Martens Olson & Bear, February 25, 2003: US06524481 (82 worldwide citation)

A method and apparatus for cleaning a membrane module, the membrane module having a plurality of porous membranes, the membranes being arranged in close proximity to one another and mounted to prevent excessive movement therebetween and means for providing, from within the module, by means other tha ...


2
Fufang Zha, Edward John Jordan: Apparatus and method for cleaning membrane filtration modules. U S Filter Wastewater Group, Knobbe Martens Olson & Bear, November 4, 2003: US06641733 (72 worldwide citation)

A method and apparatus for cleaning a membrane module, the membrane module having a plurality of porous membranes, the membranes being arranged in close proximity to one another and mounted to prevent excessive movement therebetween and means for providing, from within the module, by means other tha ...


3
Fufang Zha, David John Cox: Hollow fibre restraining system. U S Filter Wastewater Group, Knobbe Martens Olson & Bear, August 31, 2004: US06783008 (61 worldwide citation)

A restraining system for hollow fibres is provided. The restraining system includes a plurality of longitudinally extending elements spaced from one another and supported by a number of discrete spacer elements, each spacer element extending generally transverse of said longitudinal elements, such t ...


4
Fufang Zha, Edward John Jordan: Apparatus and method for cleaning membrane filtration modules. U S Filter Wastewater Group, Knobbe Martens Olson & Bear, November 23, 2004: US06821420 (57 worldwide citation)

A method and apparatus for cleaning a membrane module, the membrane module having a plurality of porous membranes, the membranes being arranged in close proximity to one another and mounted to prevent excessive movement therebetween and means for providing, from within the module, by means other tha ...


5
Heinz Joachim Muller: Modified membranes. U S Filter Wastewater Group, Knobbe Martens Olson & Bear, April 26, 2005: US06884350 (56 worldwide citation)

A porous polymeric membrane formed from a blend of a polymeric membrane forming material, such as polyvinylidene fluoride or polysulfone and a polymeric reactivity modifying agent adapted to modify the surface active properties of the porous polymeric membrane. The reactivity modifying agent is pref ...


6
David John Cox, Georg Schnieder, Fufang Zha, Joachim Muller, Cinzia Lea: Potting method. U S Filter Wastewater Group, Pall Seitzschenk Filtersystems, December 13, 2005: US06974554 (56 worldwide citation)

A method of forming a pot for an array of hollow fiber membranes (7) is provided, including the steps of placing the ends (6) of the fiber membranes (7) in a mould (5); forming a first layer (20) of curable resin material in a non-cured state around the fiber membrane ends (6), applying a second lay ...


7
Fufang Zha, Clinton V Kopp, Robert J McMahon, Warren T Johnson, Thomas W Beck: Scouring method. U S Filter Wastewater Group, Knobbe Martens Olson & Bear, November 29, 2005: US06969465 (55 worldwide citation)

A method and apparatus for removing fouling materials from the surface of a plurality of porous membranes (9) arranged in a membrane module (4) by providing, from within the module, by means (10) other than gas passing through the pores of said membranes, gas bubbles in a uniform distribution relati ...


8
Fufang Zha, Edward John Jordan: Apparatus and method for cleaning membrane filtration modules. U S Filter Wastewater Group, Knobbe Martens Olson & Bear, January 11, 2005: US06841070 (55 worldwide citation)

A method and apparatus for cleaning a membrane module, the membrane module having a plurality of porous membranes, the membranes being arranged in close proximity to one another and mounted to prevent excessive movement therebetween and means for providing, from within the module, by means other tha ...


9
Warren Thomas Johnson, Peter Rogers: Membrane filtration system. U S Filter Wastewater Group, Knobbe Martens Olson & Bear, March 29, 2005: US06872305 (52 worldwide citation)

A method and apparatus for reducing volume of feed liquid required in a porous membrane filtration system having a number of porous membranes (6) submersed in a volume of feed liquid to be filtered is provided, the method comprising the step of providing filler elements (9) within said volume of fee ...


10
Thomas William Beck, Warren Thomas Johnson: Methods of minimizing the effect of integrity loss in hollow fibre membrane modules. U S Filter Wastewater Group, January 9, 2007: US07160463 (49 worldwide citation)

A method and apparatus for reducing the effect of integrity loss in a hollow fiber membrane module, said module including a plurality of hollow fiber membranes (5), at least one end of the fiber membranes (5) being supported in a pot (6), the method including the step of increasing flow resistance o ...



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