公开(公告)号：US20240286084A1

公开(公告)日：2024-08-29

申请号：US18438441

申请日：2024-02-10

申请人： Nadav Efraty

发明人： Nadav Efraty

IPC分类号： B01D65/08

CPC分类号： B01D65/08 ,  B01D2321/2083

摘要： The present invention provides a membrane separation process comprising a pressurized feed of solution that is combined with a repressurized, internal circulation of a concentrated solution. This combined flow of feed solution and concentrated solution may be introduced to either end of pressurized vessels containing membranes and this direction of flow is periodically reversed. This combination of repressurized internal circulation and reversal of the direction of flow allows for manipulations of concentration gradients both along the length of membranes in the pressure vessel and concentration gradients within the boundary layers at the surface of the membranes

公开(公告)号：US20180304205A1

公开(公告)日：2018-10-25

申请号：US16019484

申请日：2018-06-26

申请人： Membrane Recovery Ltd.

发明人： Boris LIBERMAN ,  Igal LIBERMAN

IPC分类号： B01D65/02 ,  B01D61/10 ,  B01D61/02 ,  C02F1/44 ,  C02F1/28 ,  C02F103/08

CPC分类号： B01D65/02 ,  B01D61/025 ,  B01D61/10 ,  B01D2313/18 ,  B01D2321/04 ,  B01D2321/06 ,  B01D2321/12 ,  B01D2321/2033 ,  B01D2321/2058 ,  B01D2321/2066 ,  B01D2321/2083 ,  C02F1/283 ,  C02F1/441 ,  C02F1/444 ,  C02F2103/08 ,  C02F2303/16 ,  Y02A20/131

摘要： Apparatus and method for semi-permeable membrane cleaning in particular, applying series of pulsed water stroke, made simultaneously with osmosis backward flow causing superposed membrane directional shaking and fouling detachment. Pulsed water stroke provided by water stroke generator as several momentum sharp changes in gauge pressure and induce velocity pulse of residual brine flow. The pulsed water strokes ideally induce resonance in the membrane. Osmosis backward wash may be provided either by injection for predetermined injection time, additional solution selected in such way that net driving pressure be-comes opposite to normal osmotic operation thereby providing a backward flow of permeate towards to the side opposite to normal operation mode, so as to lift said foulant, or by throttling permeate exiting from the permeate enclosure, until the net driving pressure value become equal to zero, during application of precise synchronized and opposing brine and permeate pressure strokes thereby providing a plurality of quick RO-FO-RO process changes. These procedures allow a membrane to be kept continuously clean and operate at higher recovery.

公开(公告)号：US09901878B2

公开(公告)日：2018-02-27

申请号：US14402157

申请日：2013-05-21

申请人： TORAY INDUSTRIES, INC.

发明人： Masahide Taniguchi ,  Kazunori Tomioka ,  Tomohiro Maeda

IPC分类号： B01D63/10 ,  B01D63/12 ,  B01D65/08

CPC分类号： B01D63/106 ,  B01D63/12 ,  B01D65/08 ,  B01D2313/04 ,  B01D2313/18 ,  B01D2317/022 ,  B01D2317/025 ,  B01D2321/2083 ,  B01D2321/40

摘要： A membrane separation device includes a separation membrane unit A that has a separation membrane unit component 8, feed stream side lines F1 and F2, and a permeate stream line P, and a unit for feeding a stream-to-be-treated, wherein a stream-to-be-treated sealing material is provided in the perimeter of an anti-telescoping plate of the separation membrane element, wherein the separation membrane elements can be moved within a cylindrical pressure vessel substantially in either direction, wherein the separation membrane unit is configured to feed the stream-to-be-treated through one of the feed stream side lines F1 and F2 and to discharge the concentrate stream through the other of the feed stream side lines, and wherein the separation membrane unit includes a mechanism that can switch the flow between the feed stream side lines.

公开(公告)号：US09687787B2

公开(公告)日：2017-06-27

申请号：US13512024

申请日：2010-11-25

申请人： Boris Liberman

发明人： Boris Liberman

IPC分类号： B01D61/00 ,  B01D61/06 ,  B01D65/08 ,  C02F1/44 ,  C02F3/12 ,  C02F103/08

CPC分类号： B01D61/002 ,  B01D61/06 ,  B01D65/08 ,  B01D2321/04 ,  B01D2321/06 ,  B01D2321/2083 ,  C02F1/441 ,  C02F1/445 ,  C02F3/1268 ,  C02F2103/08 ,  C02F2209/44 ,  Y02A20/131 ,  Y02W10/15 ,  Y02W10/30

摘要： Periodically operating a forward osmosis (FO) semi-permeable membrane element in reverse osmosis (RO), to yield product extraction on a feed side of the membrane, to flush out a concentration polarization (salt concentration of the feed side and dilution of draw solution on the draw side) across the membrane. Utilizing treated waste water to generate the flushing solution of low osmotic pressure, and gauge pressurizing the flushing solution to the gauge pressure of the draw solution to keep a constant gauge pressure of the solutions. FO process is interrupted every 5-20 minutes for a 10-60 seconds long flushing RO process, thereby increasing the FO throughput five fold and recovering power from the increased throughput, i.e. from the osmotic pressure of the brine.

公开(公告)号：US20160083273A1

公开(公告)日：2016-03-24

申请号：US14888920

申请日：2014-06-02

申请人： I.D.E. TECHNOLOGIES LTD.

发明人： Boris LIBERMAN

IPC分类号： C02F1/44

CPC分类号： C02F1/441 ,  B01D61/002 ,  B01D65/02 ,  B01D2313/24 ,  B01D2315/20 ,  B01D2317/04 ,  B01D2319/02 ,  B01D2321/04 ,  B01D2321/2083 ,  B01D2321/40 ,  C02F1/445 ,  C02F2103/08 ,  C02F2209/005 ,  C02F2209/44 ,  C02F2301/08 ,  C02F2303/10 ,  C02F2303/16 ,  Y02A20/131 ,  Y02E10/28 ,  Y02W10/30

摘要： A method of operating a pressure-retarded osmosis plant, the plant comprising at least one osmosis element having a semi-permeable membrane, the semi-permeable membrane defining a feed side and a permeate side of the osmosis element, the method comprising, in a first mode of operation, supplying a feed stream having a relatively high concentration of solute to the feed side, supplying a permeate stream having a relatively low concentration of solute to an inlet of the permeate side, and receiving a feed outlet stream from the feed side wherein permeate has passed through the semi-permeable membrane from the permeate side to the feed side, in a second mode of operation, supplying a backwash stream having a relatively low concentration to the feed side of the osmosis element such that water passes through the semi-permeable membrane, and receiving a permeate outlet stream from an outlet of the permeate side, the method further comprising alternately performing the first mode of operation, to perform a production step, and performing the second mode of operation, to reduce fouling of the semi-permeable membrane.

摘要翻译： 一种操作压阻渗透设备的方法，所述设备包括至少一个具有半透膜的渗透元件，所述半透膜限定所述渗透元件的进料侧和渗透侧，所述方法包括： 第一操作模式，将具有相对高浓度溶质的进料流供给到进料侧，将具有较低浓度溶质的渗透物流供应到渗透物侧的入口，以及从进料侧接收进料出口流 其中渗透物已经从所述渗透侧穿过所述半透膜到所述进料侧，在第二操作模式中，向所述渗透元件的进料侧供应具有较低浓度的反洗流，使得水通过所述半 并且从所述渗透侧的出口接收渗透物出口流，所述方法还包括交替地执行所述第一操作模式 进行制造工序，进行第二工作模式，以减少半透膜的结垢。

公开(公告)号：US08632682B2

公开(公告)日：2014-01-21

申请号：US11922701

申请日：2006-06-22

申请人： Jack L. Gilron

发明人： Jack L. Gilron

IPC分类号： B01D61/00

CPC分类号： B01D61/022 ,  B01D61/025 ,  B01D61/027 ,  B01D61/14 ,  B01D61/142 ,  B01D61/145 ,  B01D61/147 ,  B01D65/08 ,  B01D2321/04 ,  B01D2321/2083

摘要： A method for operating a tapered flow pressure driven arrangement containing a plurality of membrane modules, which comprises positioning said membrane modules in at least two successively arranged flow stages, such that the number of membrane modules operating in parallel in a given flow stage is greater than their number in the consecutive flow stage, passing a feed stream through a flow stage to generate a permeate and a concentrate, directing said concentrate to the consecutive flow stage and passing said concentrate therethrough, while periodically replacing one or more of the membrane modules belonging to said consecutive flow stage with one or more membrane modules belonging to the previous flow stage, wherein the periodicity of said replacement is such that the surface of membranes disposed in said consecutive flow stage is exposed to super-saturation conditions associated with the passage of said concentrate for a period of time that is shorter than the time required for said concentrate to precipitate therefrom one or more sparingly soluble salts and/or minerals, onto the surface of the membranes in said consecutive flow stage under said super-saturation conditions, or before deposit of organic substances can occur in the first of said two or more successively arranged flow stages. An apparatus for carrying out the aforementioned method is also provided.

摘要翻译： 一种用于操作包含多个膜组件的锥形流动压力驱动装置的方法，其包括将所述膜组件定位在至少两个连续排列的流动台中，使得在给定流动阶段中并联操作的膜组件的数量大于 它们在连续流动阶段中的数量，使进料流通过流动阶段以产生渗透物和浓缩物，将所述浓缩物引导至连续流动阶段并使所述浓缩物通过其中，同时周期性地更换一个或多个属于 所述连续流动阶段具有属于先前流动阶段的一个或多个膜组件，其中所述置换的周期性使得设置在所述连续流动阶段中的膜的表面暴露于与所述浓缩物通过相关联的超饱和条件 一段时间比所述时间短 在所述超饱和条件下，在所述连续流动阶段中浓缩以从其中沉淀出一种或多种微溶盐和/或矿物到所述连续流动阶段的表面上，或者在所述两种或更多种相继的 排列流程。 还提供了一种用于执行上述方法的装置。

公开(公告)号：US08137539B2

公开(公告)日：2012-03-20

申请号：US10581515

申请日：2004-12-07

申请人： Jack Gilron ,  Eliyahu Korin

发明人： Jack Gilron ,  Eliyahu Korin

IPC分类号： B01D61/10

CPC分类号： B01D61/58 ,  B01D61/02 ,  B01D61/025 ,  B01D61/027 ,  B01D61/10 ,  B01D61/12 ,  B01D61/147 ,  B01D61/364 ,  B01D61/422 ,  B01D65/08 ,  B01D2321/2083 ,  C02F1/441

摘要： The invention provides a process for purifying water containing soluble species capable of forming one or more sparingly soluble salts or minerals, said process comprising feeding a pressurized water stream into a treatment zone having one or more membranes disposed therein, passing said stream along said membrane(s) to recover a permeate and to withdraw a concentrate therefrom while periodically reversing the direction of the flow of said stream in said treatment zone, wherein the periodicity of the flow reversal is such that said one or more membranes are exposed to supersaturation conditions evolving in said water stream for a period of time which is less then the time required for said supersaturated water stream to precipitate one or more of said sparingly soluble salts and/or minerals therefrom.

摘要翻译： 本发明提供一种净化含有可形成一种或多种微溶盐或矿物质的可溶性物质的水的方法，所述方法包括将加压水流进料到其中设置有一个或多个膜的处理区，使所述流沿所述膜 s）以回收渗透物并从中提取浓缩物，同时周期性地逆转所述处理区域中的所述物流的流动方向，其中流动反转的周期性使得所述一个或多个膜暴露于过饱和条件 所述水流一段时间，其小于所述过饱和水流从其中沉淀出一种或多种所述微溶盐和/或矿物所需的时间。

公开(公告)号：US07820050B2

公开(公告)日：2010-10-26

申请号：US12574974

申请日：2009-10-07

申请人： Pierre Lucien Cote ,  Arnold Janson ,  Hamid R. Rabie ,  Manwinder Singh

发明人： Pierre Lucien Cote ,  Arnold Janson ,  Hamid R. Rabie ,  Manwinder Singh

IPC分类号： B01F3/04

CPC分类号： B01D65/08 ,  B01D61/18 ,  B01D63/02 ,  B01D63/024 ,  B01D63/026 ,  B01D63/043 ,  B01D65/02 ,  B01D2315/06 ,  B01D2321/04 ,  B01D2321/185 ,  B01D2321/2083 ,  B01F3/04113 ,  B01F3/04248 ,  B01F3/04439 ,  B01F13/0266 ,  B01F15/00019 ,  B01F2003/04319 ,  B01F2003/04361 ,  B08B3/10 ,  C02F1/444 ,  C02F1/74 ,  C02F3/1273 ,  C02F3/201 ,  Y02W10/15

摘要： An aeration system for a submerged membrane module has a set of aerators connected to an air blower, valves and a controller adapted to alternately provide a higher rate or air flow and a lower rate of air flow in repeated cycles. In an embodiment, the air blower, valves and controller, simultaneously provide the alternating air flow to two or more sets of aerators such that the total air flow is constant, allowing the blower to be operated at a constant speed. In another embodiment, the repeated cycles are of short duration. Transient flow conditions result in the tank water which helps avoid dead spaces and assists in agitating the membranes.

摘要翻译： 用于浸没式膜组件的曝气系统具有连接到鼓风机，阀门和控制器的一组曝气器，其适于在重复循环中交替地提供更高的速率或空气流量和较低的气流速率。 在一个实施例中，鼓风机，阀门和控制器同时向两组或多组曝气器提供交替的空气流，使得总的空气流量是恒定的，允许鼓风机以恒定的速度运行。 在另一个实施例中，重复的周期持续时间短。 瞬态流动条件导致罐水，有助于避免死空间并有助于搅拌膜。

公开(公告)号：US07658852B2

公开(公告)日：2010-02-09

申请号：US11629630

申请日：2005-05-19

申请人： Igal Liberman

发明人： Igal Liberman

IPC分类号： B01D65/02

CPC分类号： B01D61/10 ,  B01D61/025 ,  B01D63/12 ,  B01D65/02 ,  B01D67/0081 ,  B01D2321/04 ,  B01D2321/06 ,  B01D2321/168 ,  B01D2321/2083 ,  B01D2323/42 ,  C02F1/441 ,  C02F2103/08 ,  Y02A20/131

摘要： Direct-osmosis (DO) method for cleaning a semi-permeable membrane in a RO separation module, the membrane having a feed side with foulant located thereon, and an opposite permeate side. A normal RO separation process in the same module includes: feeding, under gauge pressure PGr, raw saline solution having osmotic pressure POr to the membrane feed side; collecting permeate (solvent) having osmotic pressure POp from the permeate side, under gauge pressure PGp; and removing residual brine from the membrane feed side. The method comprises feeding to the feed side of the membrane, for a predetermined injection time, super saline solution having osmotic pressure POs>POr, such that backward flow of permeate towards the feed side of the membrane is provided so as to lift the foulant from the feed side.

摘要翻译： 用于清洁RO分离模块中的半透膜的直接渗透（DO）方法，该膜具有位于其上的污物的进料侧和相对的渗透侧。 在同一模块中正常的RO分离过程包括：在表压PGr下将具有渗透压力的生盐溶液进料到膜进料侧; 从渗透侧收集具有渗透压POp的渗透物（溶剂），在压力PGp下; 并从膜进料侧除去残留的盐水。 该方法包括向预定注射时间的进料侧进料具有渗透压POs> POr的超级盐溶液，使得提供朝向膜进料侧的渗透物向后流动，从而将污垢从 饲料方

公开(公告)号：US07625491B2

公开(公告)日：2009-12-01

申请号：US12015237

申请日：2008-01-16

申请人： Pierre Lucien Cote ,  Arnold Janson ,  Hamid R. Rabie ,  Manwinder Singh

发明人： Pierre Lucien Cote ,  Arnold Janson ,  Hamid R. Rabie ,  Manwinder Singh

IPC分类号： B01F3/04

CPC分类号： B01D65/08 ,  B01D61/18 ,  B01D63/02 ,  B01D63/024 ,  B01D63/026 ,  B01D63/043 ,  B01D65/02 ,  B01D2315/06 ,  B01D2321/04 ,  B01D2321/185 ,  B01D2321/2083 ,  B01F3/04113 ,  B01F3/04248 ,  B01F3/04439 ,  B01F13/0266 ,  B01F15/00019 ,  B01F2003/04319 ,  B01F2003/04361 ,  B08B3/10 ,  C02F1/444 ,  C02F1/74 ,  C02F3/1273 ,  C02F3/201 ,  Y02W10/15

摘要： An aeration system for a submerged membrane module has a set of aerators connected to an air blower, valves and a controller adapted to alternately provide a higher rate or air flow and a lower rate of air flow in repeated cycles. In an embodiment, the air blower, valves and controller, simultaneously provide the alternating air flow to two or more sets of aerators such that the total air flow is constant, allowing the blower to be operated at a constant speed. In another embodiment, the repeated cycles are of short duration. Transient flow conditions result in the tank water which helps avoid dead spaces and assists in agitating the membranes.

摘要翻译： 用于浸没式膜组件的曝气系统具有连接到鼓风机，阀门和控制器的一组曝气器，其适于在重复循环中交替地提供更高的速率或空气流量和较低的气流速率。 在一个实施例中，鼓风机，阀门和控制器同时向两组或多组曝气器提供交替的空气流，使得总的空气流量是恒定的，允许鼓风机以恒定的速度运行。 在另一个实施例中，重复的周期持续时间短。 瞬态流动条件导致罐水，有助于避免死空间并有助于搅拌膜。