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公开(公告)号：US20070105965A1
公开(公告)日：2007-05-10
申请号：US11636795
申请日：2006-12-11
Applicant: Ravi Chidambaran , Pavan Raina , Devesh Sharma , Narendra Bisht
Inventor： Ravi Chidambaran , Pavan Raina , Devesh Sharma , Narendra Bisht
IPC: C08J5/20
CPC classification number: B01D61/48 , B01J39/04 , B01J47/018 , B01J47/08 , C02F1/4695 , B01J41/04
Abstract: This invention presents an ion exchange media including a plurality of cation exchange zones and anion exchange zones in flow paths that are contained in a substantially nonporous resin transport framework. During electrodeionization and other potential applications the ion exchange media of the invention prevents unfavorable water splitting at resin-membrane interfaces and encourages water splitting at resin-resin interfaces where the water splitting may be constructively used to regenerate the resin.
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公开(公告)号：US08104624B2
公开(公告)日：2012-01-31
申请号：US12481909
申请日：2009-06-10
Applicant: Ravi Chidambaran , Devesh Sharma , Pavan Raina , Sugata Das
Inventor： Ravi Chidambaran , Devesh Sharma , Pavan Raina , Sugata Das
CPC classification number: C02F1/444 , B01D61/145 , B01D69/02 , B01D69/087 , B01D71/44 , B01D71/68 , B01D2323/02 , B01D2323/18 , B01D2323/22 , B01D2325/022 , B01D2325/34 , C08L39/06 , D01D1/02 , D01D5/24 , D01F6/44 , D01F6/94 , C08L2666/02
Abstract: A multipolymeric mixture is provided that includes a hydrophobic polymer, two different grades of a water-soluble polymer, water as non-solvent and a solvent suitable for all polymers involved. The dissolved hydrophobic polymer has the affinity to enmesh the water-soluble polymers to form a clear and viscous dope. Water-soluble polymers contribute to the pore formation process and hydrophilicity of the finally coagulated membrane according to the makeup of their molecular weight distribution.Water as a non-solvent takes the dope very near towards unstable zone, which helps in speeding up the membrane formation process in a diffusion induced phase inversion technique. The dope is then spun through a concentric orifice spinneret and solidified by passing it through a coagulation bath to form hollow fiber asymmetric membranes of ultra filtration grade with superior water permeability and separation characters even at higher feed turbidity.
Abstract translation: 提供了一种聚合物混合物，其包括疏水性聚合物，两种不同等级的水溶性聚合物，作为非溶剂的水和适用于所有聚合物的溶剂。 溶解的疏水性聚合物具有与水溶性聚合物的亲和性以形成透明和粘稠的涂料。 根据其分子量分布的组成，水溶性聚合物有助于最终凝结膜的孔形成过程和亲水性。 作为非溶剂的水将涂料非常靠近不稳定区域，这有助于在扩散诱导的相转化技术中加速膜形成过程。 然后将纺丝液通过同心孔喷丝头纺丝并通过将其通过凝固浴固化以形成即使在更高的进料浊度下也具有优异的透水性和分离特性的超滤级别的中空纤维不对称膜。
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Patent Agency Ranking
公开(公告)号：US07338600B2
公开(公告)日：2008-03-04
申请号：US11030926
申请日：2005-01-07
Applicant: Ravi Chidambaran , Pavan Raina , Devesh Sharma
Inventor： Ravi Chidambaran , Pavan Raina , Devesh Sharma
CPC classification number: C02F1/4695 , B01D61/48 , B01D61/52 , B01J47/08 , C02F1/003 , C02F1/005 , C02F1/42 , C02F1/4602 , C02F1/4604 , C02F1/4693 , C02F1/68 , C02F5/00 , C02F11/00 , C02F11/18 , C02F2201/46115 , C02F2201/46125
Abstract: 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 includes two or more electrodeionization operations within one or more electrodeionization stacks. The first electrodeionization operation is performed at a voltage calculated to remove strongly ionized species such as calcium and magnesium from the feed water without scaling. The product of the first electrodeionization operation is then subjected to a second electrodeionization operation. The second electrodeionization operation is performed at a voltage the same as the first electrodeionization operation, and is designed to remove more weakly ionized species such as silica and carbon dioxide, preventing scaling. More than two successive electrodeionization operations may be performed if desired. Multiple electrodeionization operations may occur in a single electrodeionization stack or in multiple electrodeionization stacks.
Abstract translation: 描述了一种液体处理方法，用于顺序地去除逐渐降低的离子强度的离子物质，而没有沉淀或“结垢”。 本发明的一个方面包括在一个或多个电去离子堆叠内的两个或多个电去离子操作。 第一电去电离操作以计算为从进料水中除去强烈离子化物质例如钙和镁的电压进行，而没有结垢。 然后对第一电去电离操作的产物进行第二电去离子化操作。 第二电去离子化操作在与第一电去离子化操作相同的电压下进行，并且被设计成除去更弱的电离物质如二氧化硅和二氧化碳，防止结垢。 如果需要，可以进行两次以上的电去离子化操作。 多个电去离子化操作可能发生在单个电去离子堆叠或多个电去离子堆叠中。
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14.发明授权Split flow EDI apparatus for treating second pass RO permeate water with high flow rate 有权分流EDI设备，用于处理第二道RO渗透水，流量高公开(公告)号：US09095822B2
公开(公告)日：2015-08-04
申请号：US13251677
申请日：2011-10-03
Applicant: Ravi Chidambaran , Narendra Singh Bisht , Pavan Raina
Inventor： Ravi Chidambaran , Narendra Singh Bisht , Pavan Raina
CPC classification number: B01D61/58 , B01D61/025 , B01D61/48 , B01D61/485 , B01D61/50 , B01D2313/14 , B01D2313/345 , C02F1/441 , C02F1/4695 , C02F9/00 , C02F2201/4611 , C02F2201/4618 , C02F2209/05
Abstract: We report an electro-deionization (EDI) device having split flow arrangement for the purification of second pass RO permeate water with high flow rate in which the feed water is fed through the center port and is diverted into each section of dilute chamber with equal flow rate, producing two product streams. The EDI device has concentrate chambers adjacent to dilute chambers in two sections of the stack, allowing independent flow through the separate sections. The split flow design reduces resin bed depth requirement for processing of second pass RO permeate water. This results in higher flow rate through the stack, elimination of the pressure drop limitation, and reduction of power consumption per unit volume of water.
Abstract translation: 我们报告了具有分流流动布置的电去离子（EDI）装置，其用于净化具有高流速的第二道RO渗透水，其中给水通过中心端口进料并且以相等的流量转入每个稀释室部分 率，产生两个产品流。 EDI装置具有与堆叠的两个部分中的稀释室相邻的浓缩室，允许独立流过分开的部分。 分流设计降低了加工第二道RO渗透水的树脂床深度要求。 这导致通过堆叠的较高流速，消除压降限制，以及降低每单位体积水的功率消耗。
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公开(公告)号：US20110192794A1
公开(公告)日：2011-08-11
申请号：US13024006
申请日：2011-02-09
Applicant: Ravi Chidambaran , Pavan Raina , Sugata Das , Nitin Chandan
Inventor： Ravi Chidambaran , Pavan Raina , Sugata Das , Nitin Chandan
CPC classification number: C02F1/44 , B01D63/082 , B01D65/02 , B01D65/025 , B01D69/08 , B01D2313/44 , B01D2315/06 , B01D2317/02 , B01D2317/04 , B01D2321/02 , B01D2321/185 , B01D2321/30
Abstract: Embodiments of the present invention relate to a filtration module and/or a novel method of making a frameless filtration module for water or wastewater treatment that can produce filtrate that is free of particles, reduce precipitated hardness, colloids and organic compounds. The designed apparatus, which is either encapsulated or in cassette form, can be assembled and disbanded easily to suit diverse process requirements. The module configuration and assembly also helps in clean-in-place, repair or replacement activities to be performed in situ.
Abstract translation: 本发明的实施例涉及一种制造用于水或废水处理的无框过滤模块的过滤模块和/或新方法，其可以产生不含颗粒的滤液，降低沉淀硬度，胶体和有机化合物。 被设计的装置，既可以是封装的，也可以是盒式的，可以容易地进行组装和拆散，以适应不同的工艺要求。 模块配置和组装也有助于在原地进行现场清洁，维修或更换活动。
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公开(公告)号：US07163964B2
公开(公告)日：2007-01-16
申请号：US10687159
申请日：2003-10-16
Applicant: Ravi Chidambaran , Pavan Raina , Devesh Sharma , Narendra Singh Bisht
Inventor： Ravi Chidambaran , Pavan Raina , Devesh Sharma , Narendra Singh Bisht
CPC classification number: B01D61/48 , B01J39/04 , B01J47/018 , B01J47/08 , C02F1/4695 , B01J41/04
Abstract: This invention presents an ion exchange media including a plurality of cation exchange zones and anion exchange zones in flow paths that are contained in a substantially nonporous resin transport framework. During electrodeionization and other potential applications the ion exchange media of the invention prevents unfavorable water splitting at resin-membrane interfaces and encourages water splitting at resin—resin interfaces where the water splitting may be constructively used to regenerate the resin.
Abstract translation: 本发明提供一种离子交换介质，其包含多个阳离子交换区和位于基本上无孔的树脂输送框架中的流动路径中的阴离子交换区。 在电去离子化和其他潜在应用中，本发明的离子交换介质防止树脂 - 膜界面处的不利的水分裂，并且促进树脂 - 树脂界面处的水分解，其中水分解可以建设性地用于再生树脂。
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公开(公告)号：US20050121397A1
公开(公告)日：2005-06-09
申请号：US11030926
申请日：2005-01-07
Applicant: Ravi Chidambaran , Pavan Raina , Devesh Sharma
Inventor： Ravi Chidambaran , Pavan Raina , Devesh Sharma
IPC: B01D61/44 , B01D61/48 , B01D61/50 , B01D61/52 , B01J47/08 , C02F1/00 , C02F1/42 , C02F1/46 , C02F1/469 , C02F1/68 , C02F5/00 , C02F11/00 , C02F11/18
CPC classification number: C02F1/4695 , B01D61/48 , B01D61/52 , B01J47/08 , C02F1/003 , C02F1/005 , C02F1/42 , C02F1/4602 , C02F1/4604 , C02F1/4693 , C02F1/68 , C02F5/00 , C02F11/00 , C02F11/18 , C02F2201/46115 , C02F2201/46125
Abstract: A liquid treatment process is described for sequential removal of ionic species of progressively decreasing ionic strength without precipitation or “scaling.” An embodiment of the invention includes dual electrodeionization operations. The first electrodeionization operation is performed at a voltage calculated to remove strongly ionized species such as calcium and magnesium from the feed water without scaling. The product of the first electrodeionization operation is then subjected to a second electrodeionization operation. The second electrodeionization operation is performed at a voltage greater than the first electrodeionization operation, and is designed to remove more weakly ionized species such as silica and atmospheric carbon dioxide. The danger of precipitation or “scaling” normally present during electrodeionization of weakly ionized species is not present in this invention, because the strongly ionized species responsible for scaling at higher voltages have already been removed from the feed stream through the first electrodeionization operation. More than two successive electrodeionization operations may be performed if desired. Multiple electrodeionization operations may occur in a single electrodeionization stack or in multiple electrodeionization stacks.
Abstract translation: 描述了一种液体处理方法，用于顺序地去除逐渐降低的离子强度的离子物质，而没有沉淀或“结垢”。 本发明的一个实施方案包括双电解离子化操作。 第一电去电离操作以计算为从进料水中除去强烈离子化物质例如钙和镁的电压进行，而没有结垢。 然后对第一电去电离操作的产物进行第二电去离子化操作。 第二电去离子化操作以大于第一电去离子化操作的电压进行，并被设计成去除更弱的电离物质，例如二氧化硅和大气二氧化碳。 由于在较高电压下负责结垢的强电离物质已经通过第一电去离子操作从进料流中除去，所以在弱电离物质的电去离子中通常存在的沉淀或“结垢”的危险通常不存在。 如果需要，可以进行两次以上的电去离子化操作。 多个电去离子化操作可能发生在单个电去离子堆叠或多个电去离子堆叠中。
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