Class / Patent application number | Description | Number of patent applications / Date published |
210648000 | Including regenerating or rehabilitating the extracting liquid in liquid/liquid solvent or colloidal extraction | 17 |
20080264862 | Method for forming uneven perforations in membrane or film - A membrane treating or forming method includes a membrane having two opposite surfaces and a number of perforations formed in the membrane, an area closer to one of the surfaces of the membrane is cooled with such as a cool device, and an area closer to the other surface of the membrane is heated in order to distort and deform the perforations of the membrane and for forming uneven or distorted or deformed perforations in the membrane and thus for preventing the perforations of the membrane from being blocked by dirt or particles. A cold device is disposed in and spaced away from the heat device for forming an inner peripheral space between the heat device and the cold device and for receiving the membrane. | 10-30-2008 |
20100018924 | FLUID TREATMENT ARRANGEMENTS AND METHODS - Fluid treatment arrangements and methods involve a plurality of fluid treatment modules and a core assembly that extends through the plurality of fluid treatment modules. Each fluid treatment module has a feed region, a permeate region, and a fluid treatment medium separating the feed region from the permeate region. The feed region extends along a feed surface of the fluid treatment medium, and the permeate region extends along a permeate surface of the fluid treatment region. Feed fluid is directed along the feed region of each module, and a portion of the feed fluid passes as permeate through the fluid treatment medium, into the permeate region, and then into the core assembly. One or more control mechanisms are fluidly coupled to the permeate region of one or more fluid treatment modules to control a flow parameter in the permeate region of the module. | 01-28-2010 |
20110024354 | DESALINATION SYSTEM AND METHOD - A desalination system comprises an electrical separation device configured to receive and ionize a first stream for desalination and a crystallization device. The crystallization device is configured to provide a second stream to the electrical separation device to carry away ions from the first stream, and defining a crystallization zone for facilitating precipitation of the ions and a solid-liquid separation zone in fluid communication with the crystallization zone for separation of the precipitate. A desalination method is also presented. | 02-03-2011 |
20110100913 | WATER PURIFIER AND WATER PURIFICATION METHOD - To provide a water purifier, containing: a diluting unit configured to bring targeted water for purification into contact with an aqueous solution containing a volatile solute and a polymer via a semi-permeable membrane so as to separate water from the targeted water by the semi-permeable membrane, and configured to dilute the aqueous solution with the separated water; a separating unit configured to separate the volatile solute and the polymer from the diluted aqueous solution obtained by the diluting unit so as to obtain purified water; and a dissolving unit configured to return the separated volatile solute by the separating unit to the aqueous solution containing the polymer, and to allow the separated volatile solute to dissolve in the aqueous solution containing the polymer. | 05-05-2011 |
20110114559 | HOLLOW FIBRE MEMBRANE - The present invention relates to a composite hollow fibre capillary membrane in particular for exploiting the value of dialysate and a method for the production thereof as well as its use in particular in haemo and peritoneal dialysis. | 05-19-2011 |
20120085707 | SYSTEMS AND METHODS FOR COMPENSATION OF COMPLIANT BEHAVIOR IN REGENERATIVE DIALYSIS SYSTEMS - In a regenerative dialysis system, in a method for controlling a regenerative dialysis system, and in a controller for a regenerative dialysis system, an embodiment of the system comprises an input pump that pumps fresh dialysate fluid into a dialyzer at an input rate. An output pump pumps used dialysate fluid from the dialyzer at an output rate. An ultrafiltration rate of the system is related to the output rate relative to the input rate. A sorbent cartridge filters the used dialysate fluid to generate the fresh dialysate fluid. A controller controls the ultrafiltration rate of the system in response to a flow rate of the dialysate fluid through the sorbent cartridge. | 04-12-2012 |
20120118826 | DESALINATION SYSTEM - A desalination system based on forward osmosis, that uses a draw solution at high osmotic and gauge pressures to generate mechanical power from the expansion of the draw solution due to water extracted from feed water through a semi-permeable membrane. The extracted water is produced during the regeneration of the draw solution. The generated power may be used to desalinate additional feed water, e.g. via reverse osmosis, such that most power needed for the reverse osmosis is supplied from the expanding draw solution, e.g. via a work exchanger. After power recovery, partly dilute draw solution may be used to extract additional water from feed water via an additional forward osmosis module. | 05-17-2012 |
20120211423 | DRAW SOLUTE FOR FORWARD OSMOSIS, DRAW SOLUTION INCLUDING THE SAME, FORWARD OSMOSIS WATER TREATMENT DEVICE USING THE SAME, AND FORWARD OSMOSIS METHOD FOR WATER TREATMENT USING THE SAME - A draw solute for forward osmosis may include a copolymer including a first structural unit where a temperature-sensitive side chain is graft polymerized, and a second structural unit including a hydrophilic functional group. The temperature-sensitive side chain may include a structural unit for a side chain including a temperature-sensitive moiety. | 08-23-2012 |
20120279921 | Solvent Removal - A process for removing a solvent from a source solution, said process comprising a) contacting the source solution with one side of a selectively permeable membrane, b) contacting a draw solution having a higher osmotic pressure (higher solute concentration) than the source solution with the opposite side of the membrane, such that solvent from the source solution passes across the membrane to dilute the draw solution by direct osmosis, c) removing solvent from the diluted draw solution to regenerate the draw solution, and d) recycling the regenerated draw solution to step a), characterised in that a portion of the draw solution is discarded or treated before and/or after the draw solution is regenerated in step c) so as to reduce the concentration of any solute species present in the draw solution from the source solution. | 11-08-2012 |
20130032538 | SYSTEMS AND METHODS FOR FORWARD OSMOSIS FLUID PURIFICATION - A method of purifying high temperature water utilizing forward osmosis is described comprising exposing the fluid to a semi-permeable membrane comprising a material capable of functioning effectively at 70-85° C., the membrane comprising a feed-solution-facing surface and a draw-solution-facing surface; directing a draw solution comprising at least one organic liquid solute and a solvent to the draw-solution-facing surface of the semi-permeable membrane, such that a quantity of the fluid is drawn by osmotic pressure across the semi-permeable membrane into the draw solution, leading to said fluid having a higher concentration of dissolved solids than prior to exposure to the semi-permeable membrane, and leading to the draw solution being more diluted than prior to being directed to the semi-permeable membrane; and boiling the draw solution so as to separate the organic liquid solute from the fluid drawn across the semi-permeable membrane for recirculation of the organic liquid solute. | 02-07-2013 |
20130180919 | DRAW SOLUTE FOR FORWARD OSMOSIS, FORWARD OSMOSIS WATER TREATMENT DEVICE, AND FORWARD OSMOSIS METHOD FOR WATER TREATMENT - A draw solute for forward osmosis may include a temperature-sensitive oligomer compound including a structural unit including a temperature-sensitive moiety. The temperature-sensitive oligomer compound may further include a hydrophilic functional group at the terminal end of the main chain. | 07-18-2013 |
20130240444 | THERMOSENSITIVE COPOLYMERS, FORWARD OSMOSIS WATER TREATMENT DEVICES INCLUDING THE SAME, AND METHODS OF PRODUCING AND USING THE SAME - A thermosensitive copolymer may include a first repeating unit having a temperature-sensitive oligomer and a second repeating unit having an ionic moiety and a counter ion to the ionic moiety. The temperature-sensitive oligomer may be an oligomer including a repeating unit derived from a unsaturated monomer with a moiety represented by Chemical Formula 1 or Chemical Formula 2, or an oligomer including a repeating unit derived from a heterocyclic compound having C, N, O, and a C═N bond in its ring. | 09-19-2013 |
20130277308 | Water Treatment System and Method for Continuous Forward Osmosis Process Using Osmotically Active Compound with Phase Transition - Provided are a water treatment system and method for continuous forward osmosis process using OAC with phase transition, where the OAC with easy phase changes is applied and thereby separation and recovery processes of the draw solution may be performed through continuous processes of a forward osmosis type, and a method thereof. In the water treatment system and method for continuous forward osmosis process using OAC with phase transition according to the exemplary embodiments of the present invention, the OAC with easy phase changes is applied so that separation and recovery processes of the draw solution can be performed through continuous processes of a forward osmosis type, thereby making it possible to produce drinking water. The water treatment process where the OAC with easy phase changes is applied can be used in all water treatment processes of waste water or groundwater, as well as seawater desalination. | 10-24-2013 |
20140319056 | PROCESS FOR MANUFACTURING POTABLE WATER AND APPARATUS THEREFOR - It is to provide a process for manufacturing potable water from a liquid to be treated, such as seawater by using forward osmosis membrane, wherein the solution after the separation of water from dilute draw solution diluted by the migration of water from the liquid to be treated, is stably regenerated and reutilized and an apparatus therefor, and the process and apparatus are a process for manufacturing potable water which comprises, a forward osmosis step wherein a liquid of which solvent is water is allowed to contact with a draw solution produced by dissolving a prescribed amount of a volatile material in water through a semi-permeable membrane, and water in said liquid is allowed to migrate to said draw solution through said semi-permeable membrane, a distillation step wherein a dilute draw solution having been diluted with water which was produced in said step is adjusted to a prescribed temperature, and then is delivered to a distillation column where gas comprising the volatile material and water vapor is discharged from the top of the column and potable water is discharged from the bottom of the column, and a cooling • regeneration step wherein said draw solution is regenerated by cooling said gas and an apparatus therefor. | 10-30-2014 |
20150060361 | DRAW SOLUTES INCLUDING AMINO ACID IONIC OLIGOMERS - A draw solute including an oligomer having an amino acid repeating unit with an ionic moiety and a counter ion thereof, and a forward osmosis water treatment device and method using the same are provided. | 03-05-2015 |
20160016115 | DRAW SOLUTIONS AND RELATED METHODS FOR TREATING A LIQUID - Draw solutions comprising at least one N-cyclicalkyl-cycloalkylamine and a secondary solvent. The N-cyclicalkyl-cycloalkylamine comprises the chemical structure: | 01-21-2016 |
20160074810 | A DRAW SOLUTE FOR FORWARD OSMOSIS - The present invention provides a draw solute for forward osmosis comprising a carbon dioxide responsive structural unit and a thermally responsive structural unit, wherein the draw solute is capable of reversibly switching between a protonated state and a deprotonated state. The present invention also provides a forward osmosis method utilising the draw solute. | 03-17-2016 |