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1. 发明申请

US20070051679A1 Water filtration using immersed membranes 审中-公开
标题翻译：使用浸入膜进行水过滤
公开(公告)号：US20070051679A1
公开(公告)日：2007-03-08
申请号：US11508983
申请日：2006-08-24
申请人： Nicholas Adams , Manwinder Singh , Fraser Kent , Pierre Cote , David Ross , Kevin Dufresne
发明人： Nicholas Adams , Manwinder Singh , Fraser Kent , Pierre Cote , David Ross , Kevin Dufresne
IPC分类号： B01D65/02
CPC分类号： B01D61/18 , B01D61/22 , B01D65/02 , B01D2315/06 , B01D2315/08 , B01D2321/04 , B01D2321/185 , C02F1/444 , C02F3/1273 , Y02W10/15
摘要： A process and apparatus is described for filtering water with immersed membranes. In a batch process, permeate is withdrawn while the flow of feed is reduced or stopped at the end of a permeation cycle. The water level is reduced to a level where a portion of the membranes are exposed to air before draining the tank. In this or another process, the level of liquid is reduced to correspond with an area of the membrane fibers having an accumulation of solids. Aeration is provided for a period of time with the liquid at this level to dislodge at least a portion of the solids from the membranes. In these or other processes, the tank is partially drained between cycles to deconcentrate the tank, aeration is provided during backwashing and intermittently while permeating, and/or retentate is withdrawn from the tank during a portion of a permeation step.
摘要翻译：描述了用浸没的膜过滤水的方法和装置。在间歇过程中，在渗透循环结束时，在进料流减少或停止的同时取出渗透物。将水位降低至一部分膜在排出罐之前暴露在空气中的水平。在这种或另一种方法中，液体的水平被降低以与具有固体积聚的膜纤维的面积相对应。提供一段时间的曝气，使该液面的液体从膜中移除至少一部分固体。在这些或其他方法中，罐在循环之间部分排出以使罐分解，在反冲洗期间提供通气并且在渗透期间间歇地提供通气，并且在渗透步骤的一部分期间从罐中取出和/或滞留物。

2. 发明申请

US20060118487A1 Membrane filtration process 审中-公开
标题翻译：膜过滤
公开(公告)号：US20060118487A1
公开(公告)日：2006-06-08
申请号：US11267130
申请日：2005-11-07
申请人： Nicholas Adams , Manwinder Singh , Fraser Kent , Pierre Cote
发明人： Nicholas Adams , Manwinder Singh , Fraser Kent , Pierre Cote
IPC分类号： B01D65/02
CPC分类号： B01D63/02 , B01D61/22 , B01D63/043 , B01D65/02 , B01D2321/04 , B01D2321/185 , B01D2321/2066 , C02F1/444 , C02F2303/16
摘要： Various filtration processes using low amounts of aeration are disclosed. One process comprises a cycle of permeating and then backwashing, aerating, partially draining the tank and refilling the tank. Another process comprises steps of (a) permeating and withdrawing retentate; (b) after (a), backwashing; and (c) during (a), providing gentle aeration. Another process comprises a cycle of (a) permeating; (b) after (a), backpulsing; (c) during (b) and extending into a portion of (a), aerating; and, (d) during a portion of (a), withdrawing retentate
摘要翻译：公开了使用低曝气量的各种过滤方法。一个过程包括渗透然后反冲洗的循环，充气，部分排出罐并重新填充罐。另一种方法包括以下步骤：（a）渗透和抽出渗余物; （b）（a）之后，反冲洗; （c）在（a）期间，提供温和通风。另一种方法包括（a）渗透的循环; （b）在（a）之后，反推; （c）（b）段期间延伸至（a）部分，充气; 和（d）在（a）的一部分，撤回滞留物

3. 发明申请

US20050284806A1 Nanofiltration system for water softening with internally staged spiral wound modules 审中-公开
标题翻译：用于内部分级螺旋缠绕模块的水软化纳滤系统
公开(公告)号：US20050284806A1
公开(公告)日：2005-12-29
申请号：US11216118
申请日：2005-09-01
申请人： Hidayat Husain , Pierre Cote , Fraser Kent
发明人： Hidayat Husain , Pierre Cote , Fraser Kent
IPC分类号： B01D61/00 , B01D61/04 , B01D61/08 , B01D61/10 , B01D61/12 , B01D61/18 , B01D63/10 , B01D65/02 , C02F1/00 , C02F1/44
CPC分类号： C02F1/008 , B01D61/025 , B01D61/027 , B01D61/04 , B01D61/08 , B01D61/10 , B01D61/12 , B01D61/145 , B01D61/18 , B01D63/10 , B01D63/103 , B01D65/02 , B01D2311/04 , B01D2313/086 , B01D2313/143 , B01D2313/146 , B01D2319/06 , B01D2321/16 , B01D2321/168 , C02F1/44 , C02F1/441 , C02F1/442 , C02F1/444
摘要： A spiral wound membrane filtration module is operated with a single pass through the feed side and without cross-flow on the permeate side. Recovery is 70% or more and feed side velocities are between 0.05 and 0.4 feet per second. The module may have dams in the spacer material on the shell/feed side to provide a feed path with multiple passes across the membrane leaves. A small-scale system for using such a module, for example to soften and filter water with a nanofiltration membrane, is described. The system includes a chemical cleaning apparatus and process.
摘要翻译：螺旋缠绕膜过滤组件通过进料侧单次通过并且在渗透侧没有交叉流动。回收率为70％以上，进料侧速度为0.05〜0.4英尺/秒。模块可以在外壳/进料侧的间隔物材料中具有坝，以提供穿过膜叶的多次通过的进料路径。描述了使用这种模块的小规模系统，例如用纳滤膜软化和过滤水。该系统包括化学清洁装置和过程。

4. 发明申请

US20060065596A1 Membrane filter cleansing process 审中-公开
标题翻译：膜过滤器清洗过程
公开(公告)号：US20060065596A1
公开(公告)日：2006-03-30
申请号：US10961077
申请日：2004-10-12
申请人： Fraser Kent , David Ross
发明人： Fraser Kent , David Ross
IPC分类号： B01D65/02
CPC分类号： B01D63/02 , B01D65/02 , B01D65/08 , B01D2315/06 , B01D2321/04 , B01D2321/185 , C02F1/444
摘要： Immersed hollow-fiber membrane filtration systems sometimes encounter process problems as a result of solids accumulation in and around the hollow fibers. The solids can accumulate to the point where they begin to dewater and form a mud like substance known as sludge. In some embodiments of the invention there is provided a process for substantially preventing the accumulation of sludge build-up on membrane fibers and/or cleansing membrane fibers that have been fouled by a substantial sludge build-up. Many of these embodiments involve aerating a membrane tank in which the membrane fibers are immersed after the water level has been reduced to near the level of solids accumulation. In some embodiments of the invention, the energy released by bursting bubbles at the liquid-air interface is employed to prevent fouling of membrane fibers and/or cleanse fouled membrane fibers.
摘要翻译：浸入式中空纤维膜过滤系统有时会由于固体积聚在中空纤维内和周围而遇到工艺问题。固体可以积聚到它们开始脱水的点，形成称为污泥的泥浆。在本发明的一些实施方案中，提供了一种用于基本上防止污泥积聚在膜纤维和/或清洁膜纤维上的方法，所述膜纤维和/或清洁膜纤维已被大量污泥积聚所污染。这些实施方案中的许多涉及在水位已经降低到接近固体积聚水平之后对其中的膜纤维进行浸泡的膜池进行曝气。在本发明的一些实施例中，采用在液 - 液界面处爆裂气泡释放的能量来防止膜纤维的结垢和/或清洁污垢的膜纤维。

5. 发明申请

US20050247198A1 Method and apparatus for removing gas bubbles from a liquid 审中-公开
标题翻译：从液体中除去气泡的方法和装置
公开(公告)号：US20050247198A1
公开(公告)日：2005-11-10
申请号：US11100597
申请日：2005-04-07
申请人： Fraser Kent
发明人： Fraser Kent
IPC分类号： B01D19/00
CPC分类号： B01D19/0042
摘要： A degassing apparatus for removing bubbles from a liquid has a treatment channel adapted to conduct a flow of liquid containing entrained bubbles, and at least one bubble removal screen in the channel and through which the flow of liquid is directed to pass. The screen is adapted to provide a contact surface to which at least a portion of the entrained bubbles adhere as the flow of liquid passes through the screen, and on which the adhered bubbles grow in size to create enlarged bubbles as the adhered bubbles merge with other entrained bubbles, and from which the enlarged bubbles break free under their buoyant force and travel in a direction different from that of the liquid flow.
摘要翻译：用于从液体中除去气泡的脱气装置具有适于导入含有夹带气泡的液体流的处理通道，以及通道中的至少一个气泡去除筛，并且液体流通过该筛。屏幕适于提供接触表面，当液体流过屏幕时，夹带气泡的至少一部分粘附在该接触表面上，并且当粘附的气泡与其它物体合并时，附着的气泡大小增大以产生扩大的气泡夹带的气泡，其膨胀的气泡在其浮力下破裂并沿与液体流不同的方向行进。

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