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Document Title |
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7582198 |
Water treatment system and method
A method and apparatus for producing purified water. An electrochemical system can be configured to pass product water through depletion compartments as well as a cathode compartment. An...
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7563351 |
Water treatment system and method
A water treatment system provides treated or softened water to a point of use by removing a portion of any hardness-causing species contained in water from a point-of-entry coming from a water...
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7544278 |
Ion exchange membranes, methods and processes for production thereof and uses in specific applications
The invention includes novel anion exchange membranes formed by in situ polymerization of at least one monomer, polymer or copolymer on a woven support membrane and their methods of formation. The...
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7520971 |
Apparatus and method for electrodeionization
An electric deionization device capable of sufficiently removing weak electrolyte components and producing processed desalting chamber having rectangular-parallelepiped frame 20 , a compartment...
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7501064 |
Integrated electro-pressure membrane deionization system
An integrated treatment system using electrodialysis and pressure-driven membranes for deionizing and decontaminating liquids to a near-pure quality for use or reuse in industrial or municipal...
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7452920 |
Electronically and ionically conductive porous material and method for manufacture of resin wafers therefrom
An electrically and ionically conductive porous material including a thermoplastic binder and one or more of anion exchange moieties or cation exchange moieties or mixtures thereof and/or one or...
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7427342 |
Method and apparatus for shifting current distribution in electrodeionization systems
An electrodeionization (EDI) apparatus and method comprising an ion-depleting chamber for removing ions from liquids passed therethrough, wherein a resistive component is coupled proximate the...
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7390386 |
Aqueous stream purifier and method of use
An electrolytic method is provided for purifying an aqueous stream, including at least one contaminant ion. In one embodiment, the eluent stream flows through a purifying flow channel, including...
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7338600 |
Fractional deionization process
A liquid treatment process is described for sequential removal of ionic species of progressively decreasing ionic strength without precipitation or “scaling.” An aspect of the invention...
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7326325 |
Apparatus and method for connecting water treatment devices
A method and apparatus for connecting water treatment devices is provided. Connecting brackets may allow for a multiple configurations of water treatment devices and can simplify the building of...
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7297245 |
Electrokinetic methods and apparatus for collection of ionic contaminants
An electrokinetic method and apparatus for discretely collecting ionic contaminants from a variety of media, with an ionic current there across in which an ion collection compartment has been...
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7201832 |
Electrodeionization deionized water producing apparatus
In the electrodeionization deionized water producing apparatus, water is passed through a deionizing chamber(s) packed with an organic porous ion exchange material having a three-dimensional...
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7141154 |
Single-stage separation and esterification of cation salt carboxylates using electrodeionization
A method of and apparatus for continuously making an organic ester from a lower alcohol and an organic acid is disclosed. An organic acid or salt is introduced or produced in an electrode...
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7094325 |
EDI and related stacks and method and apparatus for preparing such
Apparatus and method are disclosed for introducing ion exchange or other particulates into compartments of an already-assembled electrodeionization or comparable stack by modulating a flow of...
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7033472 |
Electrodeionization water producing apparatus and method of producing deionized water using same
The electrodeionization water producing apparatus comprising a depletion chamber packed with an ion exchange material, the depletion chamber being partitioned by a cation exchange membrane on one...
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6929748 |
Apparatus and method for continuous electrodeionization
A method of water purification including the steps of passing source water through at least one reverse osmosis unit to produce a product water and reject water, directing the product water from a...
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6824662 |
Electrodeionization apparatus and method
An electrodeionization apparatus and method for purifying a fluid. A fluid, such as water, can be purified by removing weakly ionizable species from the fluid. Weakly ionizable species may be...
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6808608 |
Water purifier and method
An apparatus for removing charged contaminants from a water stream. The apparatus can be figured to provide the decontaminated water stream to an analytical system. Methods of use of the same are...
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6797140 |
Electrodeionization method
An electrodeionization method for continuously producing and or separating and/or concentrating ionizable organics present in dilute concentrations in an ionic solution while controlling the pH to...
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6755951 |
Electrodialysis of salts for producing acids and bases
An electrodialysis cell is operated in the presence of organic compounds that binds or chelates with the multivalent metals to form a metal chelating buffer. Among other things, this binding or...
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6733646 |
Method and apparatus for electrodeionization of water
An electrodeionization apparatus has an anolyte compartment 17 having an anode 11 , a catholyte compartment 18 having a cathode 12 , concentrating compartments 15 , and desalting...
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6726822 |
Electrodeionization process
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...
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6607647 |
Electrodeionization apparatus with expanded conductive mesh electrode and method
An electrodeionization apparatus and method of use includes an expanded conductive mesh electrode. The expanded conductive mesh electrode may be formed from any conductive material that is...
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6596145 |
Electrodeionization module
An electrodeionization (EDI) module is formed from an anode spaced apart from a cathode, one or more waste channels formed between the electrodes and a product channel located inward of the waste...
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6565726 |
Electrodeionization apparatus and method of operating the same
Feed water, fed through an inlet 6 into a desalting compartment 8 , flows around the end 4 a of a anion-exchange membrane 4 surrounding an anode 2 a . The feed water enters into a portion...
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6565725 |
Method for producing deionized water
A method for producing deionized water by an electro-regenerating deionization method, which comprises employing a deionized water producing apparatus comprising an electrodialyzer, and ion...
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6514398 |
Electrodeionization apparatus and method
Electrodeionization apparatus and method. The electrodeionization apparatus includes an ion-depleting compartment in which alternating layers of an electroactive media are positioned. One of the...
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6495014 |
Electrodeionization substrate, and device for electrodeionization treatment
A porous immobilized ion-exchange material is provided. Also provided is an electrodeionization device incorporating the material. A method for subjecting a fluid to electrodeionization, is...
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6482304 |
Apparatus and method of recirculating electrodeionization
An electrodeionisation apparatus comprising a first deionising flow path and an integral second deionising flow path is described. The outflow from the first path is held in a holding tank prior to...
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6471867 |
Electro-regenerating type apparatus for producing deionized water
An electro-regenerating type apparatus for producing deionized water, which comprises an electrodialyzer having cation exchange membranes and anion exchange membranes alternately arranged between...
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6461512 |
Method of disinfecting a deionized water producing apparatus and method of producing deionized water
A deionized water producing apparatus includes a pretreatment apparatus having a reverse osmosis apparatus, and an electrodeionization apparatus having a diluting compartment filled with an ion...
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6436261 |
Electric deionizing apparatus and process for deionization using the same
An electric deionizing apparatus comprising a first and a second electric deionizing apparatus arranged in series, in which water is deionized by the first electric deionizing apparatus and then...
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6416645 |
Electrolytic process and apparatus for the controlled regeneration of modified ion exchangers to purify aqueous solutions
An electrolytic process and apparatus is disclosed for oxidizing or reducing inorganic and organic species, especially in dilute aqueous solutions, and for water purification and treatment. The...
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6402917 |
Electrodialysis apparatus
An electrodialysis apparatus and method for purifying water. An electrodialysis apparatus including an anode and anode chamber, a cathode and cathode chamber, and a desalting stream flow path...
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6379518 |
Electrodeionization apparatus and pure water producing apparatus
The electrodeionization apparatus 3 A has a plurality of cation exchange membrane and plurality of anion exchange membrane alternately arranged between electrodes in such a manner as to...
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6365023 |
Electrodeionization process
An electrodeionization-based process for purifying water to remove ionic species is disclosed. Ionic removal is accomplished by supplying an electrical current between an anode and a cathode of an...
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6312577 |
Continuous electrodeionization apparatus and method
A continuous electrodeionization apparatus and method. The continuous electrodeionization apparatus and method provide improved removal of weakly ionized ions, particularly silica. The apparatus...
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6296751 |
Electrodeionization apparatus with scaling control
First and second stages are used in electrodeionization to purify water including calcium and carbon dioxide and its hydrates. The diluting flow channels of the first stage include only anion...
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6274018 |
Electrodeionization apparatus comprising sub-desalination chambers
Two sub-desalination chambers d 1 and d 2 are defined by a cation exchange membrane 3 on one side, an anion exchange membrane 4 on the other side, and an intermediate ion exchange membrane 5 in...
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6265224 |
Sample processing method using ion exchange resin
The present invention relates to methods in which ion exchange resins are used to reduce the amount of substances which interfere with nucleic acid hybridization in samples. The methods also...
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6254753 |
High purity electrodeionization
Electrodeionization apparatus for purifying water includes a cathode, an anode, and a plurality of alternating anion permeable membranes and cation permeable membranes between the cathode and anode...
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6248226 |
Process for producing deionized water by electrodeionization technique
In producing deionized water by electrodeionization according to the present invention, feed water and concentrating water are flowed into the ion depletion compartments and the concentration...
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6241866 |
Electrodeionization apparatus with fixed ion exchange materials
Electrodeionization apparatus for purifying water that includes a cathode, an anode, and a plurality of alternating anion permeable membranes and cation permeable membranes between the cathode and...
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6228240 |
Method and apparatus for producing deionized water
An apparatus for producing deionized water consisting essentially of an electrodialyzer having cation exchange membranes and anion exchange membranes alternately arranged between a cathode and an...
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6207039 |
Process for recovering onium hydroxides or onium salts from solutions containing onium compounds using electrochemical ion exchange
In one embodiment, the present invention relates to a process for recovering one of an onium hydroxide and onium salt from a solution containing an onium compound involving the steps of charging...
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6197174 |
Method and apparatus for electrodeionization of water using mixed bed and single phase ion exchange materials in the diluting compartment
The invention provides a method and apparatus for electrodeionizing water, whereby the water to be purified is passed through diluting compartments in an electrodeionization unit having an anode...
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6156180 |
Electrodeionization apparatus having geometric arrangement of ion exchange material
An electrodeionization apparatus adapted to remove ions from a liquid, the apparatus having a cathode proximate a first end of the apparatus and an anode proximate the opposite end of the apparatus...
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6149788 |
Method and apparatus for preventing scaling in electrodeionization units
A method and apparatus is provided for inhibiting scaling in an electrodeionization system and, more particularly, for increasing tolerance to hardness in the feed water to an electrodeionization...
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6056878 |
Method and apparatus for reducing scaling in electrodeionization systems and for improving efficiency thereof
A method and apparatus for inhibiting scaling in an electrodeionization system or in a combined reverse osmosis/electrodeionization system for water treatment and, more particularly, for increasing...
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6017433 |
Desalting aqueous streams via filled cell electrodialysis
The invention is a process for desalting aqueous solutions, which are initially acidified to a pH of about 3 or less. Then, the acidified solution is fed into a desalting compartment of an...
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