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WO/2004/037421A1 |
A staged or serial deionization system is described. The system includes N deionization subsystems. The system has a charging state for deionizing fluid and a discharging state for deionizing the respective deionization subsystem. In the...
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WO/2004/022199A1 |
A control valve assembly (10) controls the flow of water to and from a treatment tank (16) and the regeneration of the treament material therein. A housing of the valve assembly includes connections for a tank inlet and tank outlet, An i...
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WO2002068452B1 |
A method of isolating a charged, especially proteinaceous, compound comprises providing a prepared sample of the compound in solution, placing the prepared sample in contact with a membrane so limited in effective adsorptive surface area...
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WO2003101617B1 |
A method is described to decompose perchlorate in a FeCl<3#191/HCl aqueous solution such as would be used to regenerate an anion exchange resin used to remove perchlorate. The solution is mixed with a reducing agent, preferably an organi...
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WO/2004/007375A1 |
A method of treating condensate, comprising monitoring Cl ions at an outlet of an ammonia type condensate demineralizer packed with an ion exchange resin, discontinuing water intake when the concentration or/and concentration increase te...
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WO/2003/086629A1 |
An improved process for regenerating ion exchange resin, includes a regeneration step of displacing captured ions from the resin to regenerate its ion-capture functionality, followed by one or more fluid-employing post-regeneration steps...
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WO/2003/087460A1 |
A water softener particularly for use in a dishwasher. The water softener is located in the dishwasher water supply (238) between the primary supply valve and the wash chamber. The softener includes a resin container (207) with an ion ex...
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WO/2003/084880A1 |
An ion is eluted from an ion exchange resin (132) in a separation system (100) using an eluent generated by electrolysis of a medium. Elution is further assisted by an electrical field between two electrodes (120, 110), wherein the ion e...
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WO/2003/082748A1 |
The present invention relates to a process for regenerating ion-exchange resin that has been previously used to remove DOC from water in a water treatment plant. The resin is generated by contacting the resin with a chloride salt.
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WO/2003/080834A2 |
The present invention discloses methods for separating oligonucleotides from impurities. In the methods of the invention, a target oligonucleotide, in a mixture comprising the target oligonucleotide and an impurity, is separated from the...
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WO/2003/074430A1 |
A process for removal and destruction of dissolved nitrate from water containing the same, which comprises a removal step in the form of a nitrate selective anion-exchange operation; a destruction step for nitrate destruction by electroc...
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WO/2003/070361A1 |
A softener-RO brine unit (F) to be applied in a Reverse Osmosis system for producing low Boron water from sea water. The efficiency of the Reverse Osmosis system is increased by driving the downstream brine through an ion exchange soften...
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WO/2003/066186A2 |
The invention relates to integrating at least two processes that use at least one acid, wherein one process utilizes an ion−exchange purification step.
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WO/2003/062478A1 |
The invention relates to a method for the separation of zinc an a second metal which does not form an anionic complex in the presence of chloride ions, zinc and the second metal being present in an effluent in the form of ZnCl2 and a sec...
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WO/2003/051494A2 |
Methods and apparatus for separating ions of metallic elements are provided. Preferred methods utilize a hydrophobic chelating extractant, such as an organophosphorus compound, adsorbed onto carbon or graphite fibers in the form of felt....
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WO/2003/049859A1 |
A liquid purification system and method using ion exchange resin is provided in which the ion exchange resin is kept in a compacted state by means of elastic material. Since the resin is always compacted, high efficiency of the process i...
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WO/2003/047754A1 |
A method for recovering the activity of an ion exchanger (ion−exchange resin, ion−exchange film, etc.) which is difficult to be regenerated by a normal reversible treatment, which comprises giving the same electric charge as that of ...
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WO/2003/046263A1 |
There is provided a method and device for regenerating an ion exchanger which can regenerate an ion exchanger easily and quickly, and can minimize a load upon cleaning of the regenerated ion exchanger and disposal of waste liquid. A meth...
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WO/2003/037794A1 |
The invention relates to a method for recovering lithium chloride from brine and to an installation for carrying out said method. The method for recovering LiCl from brine using selective sorptive extraction of the lithium substantially ...
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WO/2003/022432A1 |
This invention relates to ion exchange resins that have a reduced amount of physically adsorbed organic compounds, as well as methods of producing and using such resins. In particular, the amount of extractable total organic carbon on th...
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WO/2003/019059A1 |
A water conditioner valve (10) configured for use with a tank (15) in a water conditioning system, including a main housing (12), a working portion (44) disposed within the main housing and further including at least one valve chamber (4...
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WO/2003/008339A1 |
The present invention provides a process for the extraction of an organic heavy metal compound from an aqueous medium comprising the step of contacting the aqueous medium containing the organic heavy metal compound with an ion exchanger.
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WO/2003/006383A1 |
The aim of the invention is to create a method for purifying water which is polluted with lead alkyls, whereby lead alkyls are eliminated from polluted ground water in a simple, cost-effective and almost quantitative manner. To achieve t...
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WO/2003/000710A1 |
The invention relates to alkyl- and/or alkenyloligoglycoside preparations that have a magnesium salt concentration of less than 10 ppm based on the entire composition. The inventive preparations are obtained by adjusting alkyl- and/or al...
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WO/2002/085481A2 |
Compositions and methods for selectively binding specific metal ions, such as Ca?+¿ and C?d¿, contained in a source solution are disclosed and described. This is accomplished by the use of a composition comprised of an EGTA ligand cova...
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WO/2002/084230A1 |
The present invention provides an automatic monitor (10) for use in a tank (16) with a watersoluble sodium salt(14).The monitor ( 10) includes a signal emitter (38) that produces a signal capable of being detected by an array of signal-d...
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WO/2002/079087A1 |
The invention relates to a process for removal of ammonium nitrogen from waste water for a useful application using a chemical process based on ion exchange, comprising the following steps: i) as the first step, the adsorption of ammoniu...
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WO/2002/079097A1 |
The present invention relates to a method and apparatus for the removal of ions from a fluid. The method comprises contacting the fluid with a charged particulate material such that at least a portion of the designated ions are electrost...
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WO/2002/068116A1 |
A method for regenerating an adsorbent having adsorbed a persistent substance, characterized in that the persistent substance is contacted with a microbe and/or an enzyme in the interior or at the periphery of pores of the adsorbent to t...
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WO/2002/053288A2 |
Method for desalting an aqueous liquid containing a charged substance comprising the steps of:(i) contacting liquid (I) with an ion-exchanger (1) under conditions permitting binding between ion-exchanger and substance, said ion-exchanger...
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WO/2002/053252A2 |
Method for the removal of a substance from an aqueous liquid by ion exchange comprising providing a liquid with said substance is present; providing an adsorption matrix which comprises at least two different ligands; contacting the liqu...
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WO/2002/048047A2 |
The disclosed invention is a fixed bed ion exchange water purification system. It employs a combination of electronically controlled process steps and specific systems configurations to duplicate the effects of moving resin beds from one...
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WO/2002/047819A2 |
The invention relates to the use of an aqueous solution for carrying out the alkaline purification of synthetic resin ion exchangers, whereby the aqueous solution contains: a) alkalinity contributors selected among sodium hydroxide, pota...
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WO/2002/043863A2 |
The invention relates to a method for the fractional regeneration of a weakly acidic ion exchanger loaded with bivalent metallic ions selected from nickel, zinc and manganese ions, obtaining a phosphoric acid solution of valuable substan...
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WO/2002/040406A1 |
A process for the removal and destruction of dissolved nitrate from water, which comprises a removal step where nitrate is eliminated from said water or effluent in the form of a more concentrated solution thereof, and a destruction step...
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WO/2002/040405A2 |
Method for the treatment of a nickel-containing waste water, comprising a phosphate bath overflow and/or the rinsing water after phosphating, whereby the phosphating is carried out with an acidic aqueous phosphate solution, containing 3 ...
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WO/2002/038254A1 |
An apparatus and method for the treatment and purification of drinking water combines the use of ion-exchange resin and a membrane filter (12) in a single process tank (14). The ion-exchange resin is removed from the process tank (14) an...
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WO/2002/034675A1 |
In one embodiment the present invention is a process for recovering an onium hydroxide from a cation exchange material having onium cations adsorbed thereto which comprises (A) contacting said cation exchange material with an aqueous sol...
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WO/2002/030570A1 |
The invention concerns a fluid treating device, containing a distributing device (2) with a revolving disc (2) in a stationary housing (13), and a motor (15) for rotating the revolving disc (12). Feed and discharge pipes (3, 5, 6; 4, 7, ...
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WO/2002/026344A1 |
A method and apparatus are provided for treating produced water to lower the total dissolved solids of the water for safe discharge to the environment. The produced water is passed through a weak acid cation resin in H+ form (11) to remo...
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WO/2002/026383A2 |
Systems and methods for regenerating mixed bed demineralizers are disclosed in this invention. Ion exchange resins are separated in a separation vessel and are separately regenerated in a regeneration vessel. No inert resins are required...
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WO/2002/018029A1 |
A method and apparatus are described for removing iron cations and/or zinc cations from an autodeposition coating bath (T1) by passing a limited number of bed volumes through a column (IEX) containing a gel type SAC IEX resin when iron c...
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WO/2002/014223A1 |
A method of separating an anionic fluorochemical surfactant from an aqueous solution containing the anionic fluorochemical surfactant, which comprises (i) bringing the aqueous solution into contact with a basic anion-exchange resin to ad...
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WO/2002/006163A1 |
An improved electrodeionization system for removing ions from liquids passed therethrough, comprising a flow-through electrodeionization module, and a power supply electrically connected to the electrodeionization module electrodes so as...
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WO/2002/005959A2 |
The invention relates to a method for removing a positively charged substance from an aqueous liquid (I) by contacting the liquid with a cation-exchanger (1), possibly followed by a subsequent desorption of said substance. The cation-exc...
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WO/2002/000551A2 |
The present application relates to a reformation process of brine solution formed following loading of the ion-exchange resin used for water softening. The cyclic, continuous process for brine reformation comprising the steps: (I) a brin...
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WO/2001/094014A1 |
A fixed bed is prepared by packing a reactor with an acid cation-exchange resin to form a fixed bed and contacting the resultant fixed bed with an aqueous solution containing, dissolved therein, an acid, a nitrogenous sulfur compound, an...
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WO/2001/094015A1 |
Regeneration of weakly basic anion exchange resins with a combination of an alkali metal carbonate and an alkali metal bicarbonate is disclosed. Preferably, the alkali metal is sodium. The combination can be naturally available sodium se...
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WO/2001/088016A1 |
The invention relates to a method for separating alkali metal ions from alkali metal ion-containing alkoxylates. The method comprises the following steps: a) diluting the alkali metal ion-containing alkoxylate with an inert solvent, b) t...
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WO/2001/074489A1 |
A method for preparing an acidic cation exchange resin fixed bed for producing bisphenols, wherein an acidic cation exchange resin is partially neutralized homogeneously with a nitrogen-containing sulfur compound, characterized in that i...
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