1
Heinz Joachim Muller: Modified membranes. Siemens Water Technologies, November 27, 2007: US07300022 (73 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 ...


2
Daniel Mullette, Heinz Joachim Muller: Poly(ethylene chlorotrifluoroethylene) membranes. Siemens Water Technologies, July 24, 2007: US07247238 (61 worldwide citation)

Porous polymeric membranes including Halar (poly (ethylene chlorotrifluoroethylene)) and related compounds and the methods of production thereof which avoid the use of toxic solvents. Preferred solvents, coating agents and pore forming agents are citric acid ethyl ester or glycerol triacetate. The m ...


3
Edward John Jordan, Robert Elefritz: Grease and scum removal in a filtration apparatus comprising a membrane bioreactor and a treatment vessel for digesting organic materials. Siemens Water Technologies, February 12, 2008: US07329344 (57 worldwide citation)

The invention relates to a membrane bioreactor process combined with an advanced biological sludge digestion process that provides significant improvements in sludge digestion by reducing the costs and resources required for disposing of digested sludge. The offline treatment vessel is used to solub ...


4
Warren Thomas Johnson, Gary William Stollery, Bruce Gregory Biltoft, David John Cox, Robert James McMahon, David Wood, Leon Keith Ernst: Membrane filtration manifold system. Siemens Water Technologies, September 4, 2007: US07264716 (50 worldwide citation)

A membrane filtration manifold for connecting a filter submodule including one or more elongate bundles of semipermeable polymeric fibers is provided. The manifold includes a housing and connecting collar connected with said housing. The collar is adapted to receive and locate the submodule, where t ...


5
Fufang Zha, Gary C Ganzi, Thomas W Beck: Submerged cross-flow filtration. Siemens Water Technologies, September 22, 2009: US07591950 (43 worldwide citation)

A membrane filtration module having a plurality of permeable, hollow membranes is disclosed. In use, a pressure differential is applied across the walls of the permeable, hollow membranes when immersed in a liquid suspension containing suspended solids. Some of the liquid suspension passes through t ...


6
Edward John Jordan: Filtration apparatus comprising a membrane bioreactor and a treatment vessel for digesting organic materials. Siemens Water Technologies, June 17, 2008: US07387723 (43 worldwide citation)

The invention relates to a membrane bioreactor process combined with an advanced biological sludge digestion process that provides significant improvements in sludge digestion by reducing the costs and resources required for disposing of digested sludge. The offline treatment vessel is used to solub ...


7
Daniel Mullette, Heinz Joachim Muller: Poly(ethylene chlorotrifluoroethylene) membranes. Siemens Water Technologies, December 15, 2009: US07632439 (42 worldwide citation)

Porous polymeric membranes including HALARĀ® (poly(ethylene chlorotrifluoroethylene)) and related compounds and the methods of production thereof which avoid the use of toxic solvents. Preferred solvents, coating agents and pore forming agents are citric acid ethyl ester or glycerol triacetate. The m ...


8
Matthew J Kuzma: System for treating wastewater. Siemens Water Technologies, July 21, 2009: US07563363 (42 worldwide citation)

The invention is directed to a method an apparatus for treating wastewater. The wastewater treatment system includes an aeration system that cycles between biological multiple biological basins. The system also includes one or more membrane basins. A method of the invention includes controlling the ...


9
Thomas William Beck, Warren Thomas Johnson: Methods of minimising the effect of integrity loss in hollow fibre membrane modules. Siemens Water Technologies, March 18, 2008: US07344645 (41 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 ...


10
Edward J Jordan, Wenjun Liu: Method for treating wastewater. Siemens Water Technologies, May 25, 2010: US07722769 (40 worldwide citation)

This invention is directed to a wastewater treatment system having a fluidizable media carrying anoxic bacteria in a first treatment zone and a filter membrane positioned in a second treatment zone. A wastewater is contacted with the fluidizable media and further contacted with air and a filter memb ...



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