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公开(公告)号：US5868915A
公开(公告)日：1999-02-09
申请号：US717781
申请日：1996-09-23
CPC分类号： B01D61/48 , B01J47/08 , C02F1/42 , C02F1/469 , C02F1/4695 , C02F2103/08
摘要： An improved electrodeionization apparatus and method are provided. The electrodeionization apparatus includes electrolyte compartments, ion-concentrating, and ion-depleting compartments, having electroactive media therein. The electroactive media can be induced to have a reversible change in its chemical or electrical properties upon imposition of an external electrical field or the presence of an electrically charged substance. The change in chemical or electrical properties of the media results in a desired change in the transport or chemical properties of the media. The incorporation of the improved electroactive media also provides for an improved, and more reliable electrodeionization process in applications requiring chemical and temperature resistance media, where localized pH shifts would be harmful to the product being deionized, under temperature and chemical conditions of the liquid to be processed, or under circumstances where traditional media would tend to foul.
摘要翻译： 提供了一种改进的电去电离装置和方法。 电去离子装置包括其中具有电活性介质的电解质隔室，离子浓缩和离子消耗隔间。 在施加外部电场或带电物质的存在时，可以诱导电活性介质在其化学或电学性质上具有可逆的变化。 介质的化学或电学性质的变化导致介质的运输或化学性质的期望的变化。 改进的电活性介质的并入还提供了在需要化学和耐温介质的应用中的改进的和更可靠的电去离子法，其中局部pH偏移将对待去离子的产物在待处理的液体的温度和化学条件下是有害的 处理或在传统媒体倾向犯规的情况下。
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公开(公告)号：US06312577B1
公开(公告)日：2001-11-06
申请号：US09549011
申请日：2000-04-14
IPC分类号： B01D6148
CPC分类号： C02F1/4695 , B01D61/48 , B01J47/04 , B01J47/08 , C02F1/42 , C02F1/4693
摘要： A continuous electrodeionization apparatus and method. The continuous electrodeionization apparatus and method provide improved removal of weakly ionized ions, particularly silica. The apparatus and method involves using macroporous ion exchange resins that are both highly crosslinked and have a high water content. In preferred embodiments, the ion exchange resin beads also have a substantially uniform diameter.
摘要翻译： 一种连续电去离子装置及方法。 连续电去离子装置和方法提供了弱离子离子，特别是二氧化硅的改进。 该装置和方法包括使用高度交联且含水量高的大孔离子交换树脂。 在优选的实施方案中，离子交换树脂珠也具有基本均匀的直径。
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公开(公告)号：US5308466A
公开(公告)日：1994-05-03
申请号：US841021
申请日：1992-02-25
CPC分类号： C02F1/4695 , B01D61/48 , B01J47/08 , C02F1/42 , C02F1/4604 , C02F2201/46115
摘要： An electrodeionization apparatus is provided for removing ions from liquids. The apparatus is particularly well adapted for the removal of large, heavily hydrated, highly charged or weakly ionized molecules or complexes from feed water. Such removal is achieved by substituting, in at least one section of the apparatus, ion exchange membranes and/or resins having lower crosslinking and/or lower selectivity, for the ion exchange membranes commonly used in electrodeionization systems. Methods for reducing the electrical resistance across the membrane also are provided.
摘要翻译： 提供了用于从液体中去除离子的电去离子装置。 该装置特别适用于从给水中去除大的，重度水合的，高度带电的或弱离子化的分子或络合物。 通过在电去离子系统中通常使用的离子交换膜替代在装置的至少一个部分中具有较低交联和/或低选择性的离子交换膜和/或树脂来实现这种去除。 还提供了降低膜上电阻的方法。
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公开(公告)号：US5316637A
公开(公告)日：1994-05-31
申请号：US938329
申请日：1992-08-28
CPC分类号： C02F1/4695 , B01D61/48 , B01J47/08 , C02F1/42 , C02F1/4604 , C02F2201/46115
摘要： An electrodeionization apparatus is provided for removing ions from liquids. The apparatus is particularly well-adapted for the removal of large, heavily hydrated, highly charged or weakly ionized molecules or complexes from feed water. Such removal is achieved by substituting, in at least one section of the apparatus, ion exchange membranes and/or resins having lower crosslinking and/or lower selectivity, for the ion exchange membranes commonly used in electrodeionization systems. Methods for reducing the electrical resistance across the membrane also are provided.
摘要翻译： 提供了用于从液体中去除离子的电去离子装置。 该装置特别适用于从给水中除去大的，重度水合的，高度带电的或弱离子化的分子或络合物。 通过在电去离子系统中通常使用的离子交换膜替代在装置的至少一个部分中具有较低交联和/或低选择性的离子交换膜和/或树脂来实现这种去除。 还提供了降低膜上电阻的方法。
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公开(公告)号：USRE35741E
公开(公告)日：1998-03-10
申请号：US778714
申请日：1996-12-27
CPC分类号： C02F1/4695 , B01D61/48 , B01J47/08 , C02F1/42 , C02F1/4604 , C02F2201/46115 , C02F2201/4612 , C02F2201/4613 , C02F2209/05
摘要： A process is provided for removing ions from water which is passed through an ion depletion compartment of an electrodeionization apparatus. The electrodeionization apparatus contains an ion depletion compartment containing mixed ion exchange resin beads and an ion concentration compartment which may contain ion exchange resin beads in a given separation stage having an anode and a cathode. The anion resin beads and cation resin beads utilized each comprise beams of substantially uniform size. A second liquid is passed through the ion concentration compartment to collect ions under the influence of DC potential which pass from the depletion compartments into the concentration compartments through ion permeable membranes. The electrodeionization apparatus can be operated continuously since resin regeneration is not required.
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公开(公告)号：US5211823A
公开(公告)日：1993-05-18
申请号：US717460
申请日：1991-06-19
CPC分类号： B01J49/0052 , B01J47/08 , C02F1/4695
摘要： Purified ion exchange resin particles are provided in a bifunctional electrodeionization step having anion depletion compartments containing anion exchange resin particles which are purified and cation depletion compartments containing cation exchange resin particle which are purified as well as ion concentration compartments. The bifunctional electrodeionization step for purifying resin particles is conducted under conditions to disassociate water into hydrogen ions and hydroxyl ions. Purified water having a purity of at least 1 megohm-cm is introduced into the anion depletion compartment and cation depletion compartments and water for accepting ionic impurities is introduced into the ion concentration compartments. The purified water is produced in an initial purification step which also can be an electrodeionization step. The water effluent from the anion depletion compartments and cation depletion compartments is recycled either to an initial water purification step or to the inlets of the anion depletion compartments or cation depletion compartments. The anion depletion compartments include an anion permeable membrane and a bifunctional interface. The cation depletion compartments include a cation permeable membrane and the bifunctional interface.
摘要翻译： 纯化的离子交换树脂颗粒提供在具有含有阴离子交换树脂颗粒的阴离子消耗隔室的双功能电去电离步骤中，所述阴离子交换树脂颗粒是纯化的，并且含有纯化的阳离子交换树脂颗粒和离子浓度隔室。 在将水分解成氢离子和羟基离子的条件下进行用于净化树脂颗粒的双功能电去电离步骤。 将净化至少1兆欧姆厘米的水引入阴离子耗尽室，将阳离子消耗隔间和用于接受离子杂质的水引入离子浓度隔室中。 纯化水在初始纯化步骤中产生，其也可以是电去电离步骤。 来自阴离子消耗隔间和阳离子消耗室的水流出物被循环至初始水净化步骤或阴离子消耗隔室或阳离子消耗隔室的入口。 阴离子消耗隔室包括阴离子渗透膜和双功能界面。 阳离子消耗隔室包括阳离子可渗透膜和双功能界面。
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公开(公告)号：US4956071A
公开(公告)日：1990-09-11
申请号：US298455
申请日：1989-01-18
申请人： Anthony J. Giuffrida , Gary C. Ganzi , Yoram Oren
发明人： Anthony J. Giuffrida , Gary C. Ganzi , Yoram Oren
CPC分类号： C02F1/4695 , B01D61/48 , B01J47/08 , C02F1/42 , C02F1/4604 , C02F2201/46115 , C02F2201/4612 , C02F2201/4613 , C02F2209/05
摘要： An electrodeionization apparatus and process are provided for removing ions from liquids. Liquid to be purified is passed through depleting compartments containing mixed anion and cation exchange resin beads while a second liquid is passed through concentrating compartments also containing ion exchange resin beads. Ions, under influence of a D.C. potential, pass from the depleting compartments into the concentrating compartments through ion permeable membranes. The beads in the depleting compartments are housed within subcompartments of controlled width and thickness and are retained therein by the ion permeable membranes which are secured to the walls of the subcompartments. Means are provided for reversing the polarity of the D.C. potential to convert the depleting compartments to concentrating compartments and the concentrating compartments to depleting compartments. Means are provided for continuously recovering purified water from the apparatus regardless of the polarity of the D.C. potential and the timing of the polarity reversal cycle.
摘要翻译： 提供了用于从液体中去除离子的电去离子装置和方法。 待纯化的液体通过含有混合阴离子和阳离子交换树脂珠粒的消耗区，而第二液体通过也含有离子交换树脂珠的浓缩室。 在直流电位的影响下，离子通过离子渗透膜从耗尽室转移到浓缩室中。 消耗隔间中的珠子容纳在受控宽度和厚度的子隔室内，并通过固定到子隔室的壁的离子可渗透膜保持在其中。 提供了用于逆转直流电位的极性的手段，以将耗尽室转化成浓缩室，并将浓缩室转化成耗尽室。 提供了用于从设备连续回收纯化水的方法，而不管直流电位的极性和极性反转周期的时间如何。
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公开(公告)号：US4925541A
公开(公告)日：1990-05-15
申请号：US908913
申请日：1986-09-18
申请人： Anthony J. Giuffrida , Anil D. Jha , Gary C. Ganzi
发明人： Anthony J. Giuffrida , Anil D. Jha , Gary C. Ganzi
CPC分类号： C02F1/4695 , B01D61/48 , B01J47/08 , C02F1/42 , C02F1/4604 , C02F2201/46115 , C02F2201/4612 , C02F2201/4613 , C02F2209/05
摘要： An electrodeionization apparatus and process are provided for removing ions from liquids. Liquid to be purified is passed through depleting compartments containing mixed anion and cation exchange resin beads while a second liquid is passed through concentrating compartments free of ion exchange resin beads. Ions, under influence of a D.C. potential, pass from the depleting compartments into the concentrating compartments through ion permeable membranes. The beads in the depleting compartments are housed within subcompartments of controlled width and thickness and are retained therein by the ion permeable membranes which are secured to the wall of the subcompartments.
摘要翻译： 提供了用于从液体中去除离子的电去离子装置和方法。 待纯化的液体通过含有混合阴离子和阳离子交换树脂珠的耗尽室，而第二液体通过不含离子交换树脂珠的浓缩室。 在直流电位的影响下，离子通过离子渗透膜从耗尽室转移到浓缩室中。 消耗隔间中的珠容纳在受控宽度和厚度的子隔室内，并通过固定到子隔室的壁的离子渗透膜保持在其中。
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公开(公告)号：US4632745A
公开(公告)日：1986-12-30
申请号：US762804
申请日：1985-08-02
申请人： Anthony J. Giuffrida , Anil D. Jha , Gary C. Ganzi
发明人： Anthony J. Giuffrida , Anil D. Jha , Gary C. Ganzi
CPC分类号： C02F1/4695 , B01D61/48 , B01J47/08 , C02F1/42 , C02F1/4604 , C02F2201/46115 , C02F2201/4612 , C02F2201/4613 , C02F2209/05
摘要： An electrodeionization apparatus and process are provided for removing ions from liquids. Liquid to be purified is passed through depleting compartments containing mixed anion and cation exchange resin beads while a second liquid is passed through concentrating compartments free of ion exchange resin beads. Ions, under influence of a D.C. potential, pass from the depleting compartments into the concentrating compartments through ion permeable membranes. The beads in the depleting compartments are housed within subcompartments of controlled width and thickness and are retained therein by the ion permeable membranes which are secured to the walls of the subcompartments.
摘要翻译： 提供了用于从液体中去除离子的电去离子装置和方法。 待纯化的液体通过含有混合阴离子和阳离子交换树脂珠的耗尽室，而第二液体通过不含离子交换树脂珠的浓缩室。 在直流电位的影响下，离子通过离子渗透膜从耗尽室转移到浓缩室中。 消耗隔间中的珠子容纳在受控宽度和厚度的子隔室内，并通过固定到子隔室的壁的离子可渗透膜保持在其中。
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公开(公告)号：US4298442A
公开(公告)日：1981-11-03
申请号：US175098
申请日：1980-08-04
申请人： Anthony J. Giuffrida
发明人： Anthony J. Giuffrida
CPC分类号： B01D61/44 , B01D2311/04 , B01D2325/14
摘要： A process for the removal of silica from an aqueous solution is disclosed in which the pH of the solution is adjusted to at least about 9.5 and then passed through a conventional electrodialysis cell to effect ionic transfer of the silica out of solution.
摘要翻译： 公开了一种从水溶液中除去二氧化硅的方法，其中将溶液的pH调节至至少约9.5，然后通过常规电渗析池，以使二氧化硅从溶液中离子转移。
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