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Assignee: Siemens Water Technology Corp.


Location: Warrendale, PA
No. of patents: 11

NumberTitleIssue Date
7404896Modified membranes
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 ...
07/29/2008
7387723Filtration apparatus comprising a membrane bioreactor and a treatment vessel for digesting organic materials
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...
06/17/2008
7384565Method for chlorite removal
The invention is directed to a process for removing chlorite ion from a body of water containing unacceptably high levels of chlorite comprising adding to said body of water a chlorite removal chemical selected from the group comprising sodium dichloroisocyanurate d...
06/10/2008
7361274Aeration method
A method and filtration module (5) for providing gas bubbles within an array of vertically disposed porous hollow membranes (6) to clean the outer surfaces of said membranes (6) when the array is immersed in a liquid by feeding (10) the g...
04/22/2008
7344645Methods of minimising the effect of integrity loss in hollow fibre membrane modules
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 me...
03/18/2008
7329344Grease and scum removal in a filtration apparatus comprising a membrane bioreactor and a treatment vessel for digesting organic materials
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...
02/12/2008
7300022Modified membranes
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 ...
11/27/2007
7285217Removing odoriferous sulfides from wastewater
A synergistic composition is provided for controlling odor from waste products. The composition comprises a combination of nitrate salt, sulfide-consuming compound, pH-elevating compound, sulfide-oxidizing, nitrate-reducing bacteria, and sulfide-oxidizing enzyme. Th...
10/23/2007
7282146Removal system for membranes in a membrane filtration system
A removal system for membranes in a membrane filtration system of the type where the membranes (12) are supported on a membrane support rack (13) in a tank or vessel (6) which, in use, contains liquid to be filtered. The tank (6) comprise...
10/16/2007
7264716Membrane filtration manifold system
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...
09/04/2007
7226541Membrane polymer compositions
The invention relates to a terpolymer of tetrafluoroethylene (TFE) monomer, polyvinylidene fluoride (PVDF) monomer and hexafluoropropylene (HFP) monomer for forming an ultrafiltration or microfiltration membrane, method of forming said membranes, and to the ultrafil...
06/05/2007
 
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