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7615157 |
Apparatus for withdrawing permeate using an immersed vertical skein of hollow fibre membranes
A process is described for withdrawing filtered permeate from a non-pressurized substrate in a reservoir through an assembly. The assembly has a plurality of hollow fiber filtering membranes...
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7591950 |
Submerged cross-flow filtration
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...
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7582212 |
Method of removing silicon dioxide from waste liquid, method of cleaning membrane tube and method of processing waste water
A method of removing silicon dioxide from a waste liquid is described. A solution containing fluoride ions is added into the waste liquid to form a reaction product. A method of cleaning a membrane...
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7578940 |
Membrane cartridge, membrane separating device, and membrane separating method
A membrane separating method and a membrane separating device capable of preventing sludge from being accumulated on the surface of hollow fiber membranes in a membrane cartridge and having...
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7575676 |
HPLC column holder apparatus
An HPLC column holding apparatus used to mount an HPLC column in one of a plurality of positions is disclosed herein. The apparatus comprises a clip-device interface that secures the apparatus to a...
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7563375 |
Direct osmosis cleaning
A method of cleaning a fouled RO membrane in a module for RO separation, the membrane having feed side and permeate side, the foulant accumulating at the feed side. The cleaning method comprises:
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7537701 |
Membrane filtration module with adjustable header spacing
A membrane filtration device has a multiplicity of hollow fiber membranes, or fibers, unconfined in a shell of a module; a first header and a second header disposed in vertically spaced-apart...
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7534353 |
Apparatus for withdrawing permeate using an immersed vertical skein of hollow fibre membranes
A process is described for withdrawing filtered permeate from a non-pressurized substrate in a reservoir through an assembly. The assembly has a plurality of hollow fiber filtering membranes...
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7531042 |
Methods for cleaning and maintaining membrane surface during filtration
A method is provided for cleaning a membrane surface or maintaining a clean outside surface of a membrane during a process of outside-in membrane separation to remove suspended solids from a liquid...
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7514010 |
Water filtering method and apparatus
A “polishing” water filter for the micro-filtration of fine particles comprises a porous ceramic substrate, having an average pore size in the range of about 0.2 to about 100 microns, which is...
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7501061 |
Production of water for injection using reverse osmosis
A method and system for providing Water for Injection using reverse osmosis. Water for Injection can be produced by reverse osmosis and the reverse osmosis membrane can be kept in a constantly...
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7445716 |
Crossflow pressure liquid filtration with ultrasonic enhancement
Methods and apparatus for increasing the duration of uninterrupted filtering flow by using crossflow filtration and ultrasonic energy with in difficult to filter process liquids (e.g. of the kind...
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7422690 |
Filtering system
A filtering system comprising an inlet ( 11 ) for liquid to be filtered and an outlet ( 9 ) for filtered liquid, as well as filtering means, which system is characterized in that the filtering...
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7410579 |
Manual dialyzer header cleaning device
A dialyzer header cleaning device composed of: a connecting member for connecting the device to the header, the connecting member having a longitudinal passage with a longitudinal axis; and a flow...
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7378024 |
Methods for improving filtration performance of hollow fiber membranes
In accordance with the present invention, there are provided methods for improving performance of hollow fiber filtration membrane modules. Invention methods comprise a unique backwashing technique...
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7361274 |
Aeration 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...
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7347942 |
Cyclic aeration system for submerged membrane modules
An aeration system for a submerged membrane module has a set of aerators connected to an air blower, valves and a controller adapted to alternately provide a higher rate or air flow and a lower...
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7300582 |
Immersed membrane apparatus
An apparatus for filtering a liquid in a tank has a plurality of elements and a frame for holding the elements while they are immersed in the liquid. The elements have a plurality of hollow fibre...
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7297278 |
Methods for removing metals from water
A device for separating metal components from a colloidal suspension or solution uses a vessel for holding the colloidal suspension or solution. A membrane impermeable to the selected metal...
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7294274 |
Filtration system with enhanced cleaning and dynamic fluid separation
A filtration system is provided with filter media operable to remove solids, particulate and colloidal matter from a process fluid. Acoustic, vibration and sonic energy may be used to clean...
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7285225 |
Method and apparatus for concentrating a slurry
The current invention provides improved methods and filter stacks for concentrating a slurry of titanium dioxide. The improved filter stack comprises a series of filter disks and diverter trays...
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7273554 |
Crossflow-filtration method for beverages
The invention relates to a crossflow-filtration method for beverages, in particular beer, which comprises the following steps: a) the feed liquid is introduced into a filter module by means of a...
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7229555 |
Low-maintenance watermaker
A reverse osmosis system is subject to long periods of non-use in which water stands inside. A hollow-cylindrical spiral-wound type reverse osmosis membrane is disposed inside a cylindrical...
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7220358 |
Methods for treating membranes and separation facilities and membrane treatment composition
A method for treating a separation facility is provided according to the invention. The separation facility includes a plurality of membranes for providing separation of a feed product. The method...
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7198721 |
Cyclic aeration system for submerged membrane modules
An aeration system for a submerged membrane module has a set of aerators connected to an air blower, valves and a controller adapted to alternately provide a higher rate or air flow and a lower...
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7186343 |
Cyclic aeration system for submerged membrane modules
A process for supplying bubbles to a membrane module and cleaning an aerator producing the bubbles includes, in repeated cycles, steps of producing bubbles from an aerator and reducing pressure in...
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7186342 |
Method for filling and washing a filter for a dialysis machine
A dialysis machine is provided with a dialysate circuit, a blood circuit and a filter having a dialysate compartment connected to the dialysate circuit, a blood compartment connected to the blood...
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7147616 |
Method for emptying a blood circuit of an apparatus for the extracorporeal treatment of blood
A method for emptying a blood circuit of an apparatus for the extracorporeal treatment of blood after interrupting a treatment session. The apparatus has a blood treatment device with first and...
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7125516 |
Vacuum drying process used for manufacturing dialyzer
A method of sterilizing and drying a dialyzer or other device, wherein a vacuum drying phase is interrupted by interspersed pulses of air or other gas. The pulses lessen the evaporative cooling...
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7122121 |
Advanced submerged membrane modules, systems and processes
Advanced submerged membrane systems are provided. Said submerged membrane systems have multiple membrane modules comprising of strips of flat sheet membrane, bundles of self-support hollow fiber...
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RE39294 |
Vertical skein of hollow fiber membranes and method of maintaining clean fiber surfaces while filtering a substrate to withdraw a permeate
A vertical skein of “fibers”, opposed terminal portions of which are held in headers unconfined in a modular shell, is aerated with a gas-distribution means which produces a mass of bubbles...
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7087173 |
Inverted cavity aerator for membrane module
An aerator for immersed filtering membranes has an aerator shell with openings for discharging bubbles from its upper surface and a shape capable of temporarily containing a volume of air in fluid...
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7077961 |
Apparatus for extracorporeal blood or plasma treatment comprising a wet semi-permeable membrane and methods for making the same
The present invention relates to a device for the extracorporeal treatment of blood or plasma, comprising two compartments, one compartment intended for circulating blood or plasma, and one...
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7070695 |
Ultrafiltration and microfiltration module and system
A method and apparatus of purifying feedwater to remove impurities including suspended solids therefrom, the method suitable for using in-line water pressure to permeate water through hollow fiber...
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7063788 |
Apparatus for withdrawing permeate using an immersed vertical skein of hollow fibre membranes
An apparatus is described for withdrawing filtered permeate from a substrate contained in a reservoir at ambient pressure. The apparatus includes a plurality of membrane assemblies. Each assembly...
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7052610 |
Immersed membrane filtration system and overflow process
Modules of ultrafiltration or microfiltration membranes are arranged in a tank open to the atmosphere to substantially cover the cross sectional area of the tank. A filtration cycle has permeation...
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7025885 |
Water filtration using immersed membranes
A process for operating filtering membranes submerged in a tank involves, in one aspect, periodically deconcentrating the tank by partially emptying and refilling the tank with fresh water. The...
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7025884 |
Method and apparatus for treatment of a fluid system
A method for treating a fluid by providing raw fluid to a process tank, adding an ion exchange resin to the process tank to form a raw fluid/ion exchange resin mixture, removing treated fluid from...
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7022238 |
Immersion type membrane filter
An immersion type membrane filter apparatus 200 is intended for obtaining filtrate by filtrating a fluid to be processed stored within a storage bath 150 and primarily includes a filtration...
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7022231 |
Apparatus incorporating potted hollow fiber membranes
Apparatus incorporating potted hollow fibre membranes has a solid mass of potting material having a first face, a plurality of hollow fibre membranes sealed in the potting material. Portions of the...
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7014770 |
Filtering method of a colloidal solution
A filtering method is directed to a wastewater of CMP process, which includes sub-micrometer particles suspended as colloid. The wastewater is filtered by a gel membrane formed on a surface of...
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7008540 |
Ultrasonically cleaned membrane filtration system
A filtration system and a method of cleaning a particle and/or colloidal fouled filtration membrane are provided. The filtration system includes at least one filtration membrane disposed in a...
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6998049 |
Method for preventing the formation of biological films
The invention relates to a method for improving the performance of filtration devices by adding P- and/or N-containing compounds to the medium to be filtered.
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6982037 |
Method for treating wastewater/water with membrane bioreactor
Method of waste water/water treatment in a submerged membrane bioreactor is disclosed. The bioreactor includes a tank containing a mixed liquor having microorganism; porous carriers in the mixed...
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6979404 |
Self-manifolding sheet membrane module
A filtration device having a plurality of membrane modules is provided. Each of the plurality of membrane modules has first and second permeable sheets that are separated by a spacer, a first ring...
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6969465 |
Scouring method
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 (...
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6969343 |
Centrifuge with a sieve system and method for operating the same
A centrifuge, comprising a distributor for introducing material to be centrifuged and a sieve system having a plurality of axially mutually offset membrane plates, the membrane plates being...
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6955762 |
Method of cleaning membranes
The present invention relates a method for cleaning polymeric microfiltration membranes and membrane units, and to compositions useful in such methods. The compositions include at least one soluble...
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6936171 |
Process for catalyst recovery from hydrocyanation product mixtures
Disclosed herein is a process for recovering diphosphite-containing compounds from a mixture comprising diphosphite-containing compounds and organic dinitriles and Lewis acid, using liquid-liquid...
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6926833 |
Tangential-flow filtration system
The present invention includes a system and method for transferring a selected solute species from a fluid mixture to a fluid media. The system of the present invention includes a convergent...
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