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    • 3. 发明授权
    • Cleaning in membrane filtration systems
    • 膜过滤系统清洗
    • US08496828B2
    • 2013-07-30
    • US11722411
    • 2005-12-19
    • Warren Thomas JohnsonThomas William BeckRebecca Yeo
    • Warren Thomas JohnsonThomas William BeckRebecca Yeo
    • B01D65/02C02F1/44
    • B01D65/02B01D63/02B01D2315/06B01D2321/16B01D2321/162B01D2321/164B01D2321/168C02F1/444
    • A method of cleaning permeable, hollow membranes is disclosed. In one embodiment, the membranes are immersed in a liquid suspension. A pressure differential is applied across the walls of the membranes. During filtration, liquid suspension passes through the walls of the membranes to be drawn off as permeate, and at least some solids are retained on or in the membranes. The steps of cleaning include: applying a cleaning solution to one side of the membrane walls; applying a pressure differential across the membrane walls to cause flow of the cleaning solution through the walls from the one side of the membrane walls to the other side of the membrane walls; and, applying a reverse pressure differential across the membrane walls to cause flow of the cleaning solution through the wall from the other side of the membrane walls back to the one side of the membrane walls.
    • 公开了一种清洁可渗透的中空膜的方法。 在一个实施方案中,将膜浸入液体悬浮液中。 在膜的壁上施加压力差。 在过滤期间,液体悬浮液通过膜的壁以作为渗透物排出,并且至少一些固体保留在膜上或膜中。 清洁步骤包括:将清洁溶液施加到膜壁的一侧; 在所述膜壁上施加压力差使得所述清洁溶液流过所述壁从所述膜壁的所述一侧到所述膜壁的另一侧; 并且跨过所述膜壁施加反向压差以使所述清洁溶液从所述膜壁的另一侧通过所述壁流回所述膜壁的所述一侧。
    • 4. 发明授权
    • Backwash
    • 反洗
    • US08268176B2
    • 2012-09-18
    • US10569565
    • 2004-08-27
    • Warren Thomas JohnsonThomas William BeckFufang ZhaHuw Alexander LazaredesZhiyi Cao
    • Warren Thomas JohnsonThomas William BeckFufang ZhaHuw Alexander LazaredesZhiyi Cao
    • B01D65/02
    • B01D65/08B01D61/14B01D63/02B01D2321/185
    • A method of backwashing a membrane filtration module (4), said module (4) including one or more membranes (5) located in a feed-containing vessel (3), the membranes (5) having a permeable wall which is subjected to a filtration operation wherein feed containing contaminant matter is applied to one side of the membrane wall and filtrate is withdrawn from the other side of the membrane wall, the method including: removing liquid from the feed-containing vessel (3) until the level of liquid in the feed-containing vessel (3) falls to a first level (L2) below an upper level of the membranes; suspending the filtration operation; performing a liquid backwash of the membrane wall until liquid level within the feed-containing vessel (3) rises to a second predetermined level (L1) above said first level; aerating the membrane surface with gas bubbles to dislodge fouling materials therefrom; performing a sweep or drain down of the feed-containing vessel (3) to remove the liquid containing the dislodged contaminant matter; and recommencing the filtration operation.
    • 一种反洗膜过滤模块(4)的方法,所述模块(4)包括位于含进料容器(3)中的一个或多个膜(5),所述膜(5)具有可渗透壁,所述膜 过滤操作,其中将含有污染物质的进料施加到膜壁的一侧,并且滤液从膜壁的另一侧排出,该方法包括:从含进料的容器(3)中除去液体,直到液体的液面 含饲料容器(3)在膜的上层下方落入第一水平(L2); 暂停过滤操作; 进行所述膜壁的液体反冲洗,直到所述含饲料容器(3)内的液面上升到高于所述第一水平的第二预定水平(L1) 用气泡对膜表面进行充气以从其中去除污垢物质; 进行含有进料的容器(3)的扫掠或排出以除去含有移出的污染物质的液体; 并重新进行过滤操作。
    • 5. 发明授权
    • Filtration monitoring and control system
    • 过滤监控系统
    • US6077435A
    • 2000-06-20
    • US913901
    • 1998-01-12
    • Thomas William BeckHumphrey John Jardine DrummondIan Andrew MaxwellWarren Thomas JohnsonBrett Kensett-Smith
    • Thomas William BeckHumphrey John Jardine DrummondIan Andrew MaxwellWarren Thomas JohnsonBrett Kensett-Smith
    • B01D37/04B01D61/22B01D65/02B01D65/10B01D35/143G01N15/08
    • B01D65/102B01D37/046B01D61/22B01D65/02B01D2321/04B01D2321/185
    • A method and apparatus for determining the fouling effect of a feedstream on a filter having known characteristics disclosed. The method comprises passing the feedstream through a filter (5) having known characteristics; determining the change in resistance to flow of the feedstream across the filter, either continuously or over a number of time intervals and from this data, calculating a feed fouling index (FFI) representative of the fouling characteristics of the feedstream with respect to the filter. A method and apparatus for monitoring the operation of a filtration system is also disclosed the method comprising sampling system parameter values at selected locations within the filtration system at a predetermined sampling rate; generating a parameter profile characteristic from the sampled parameter values at predetermined intervals of time; and analysing the parameter profile characteristic to determine correct operation of the filtration system. A further method and apparatus of monitoring and controlling a filtering system based on backwash efficiency is also disclosed, the method comprising determining resistance values of filtering elements used in the filtering system at predetermined times during the backwash cycle of the system by monitoring a number of operating parameters of the system; calculating a backwash efficiency value representative of the efficiency of the backwash cycle of the filtering system using the resistance values determined; and controlling the operation of the filtering system in dependence on the value of the backwash efficiency calculated.
    • PCT No.PCT / AU96 / 00144 Sec。 371日期:1998年1月12日 102(e)日期1998年1月12日PCT 1996年3月15日PCT公布。 WO96 / 28236 PCT公开号 日期1996年9月19日一种用于确定进料流对已知特征的过滤器的污垢效应的方法和装置。 该方法包括使进料流通过具有已知特性的过滤器(5); 确定进料流通过过滤器的流动阻力的变化,连续地或超过多个时间间隔,并从该数据中计算代表进料流相对于过滤器的结垢特性的进料污染指数(FFI)。 还公开了一种用于监测过滤系统的操作的方法和装置,该方法包括以预定采样速率在过滤系统内的选定位置取样系统参数值; 以预定的时间间隔从采样的参数值生成参数分布特征; 并分析参数分布特征以确定过滤系统的正确操作。 还公开了一种基于回洗效率来监测和控制过滤系统的方法和装置,该方法包括:在系统的反冲洗循环期间的预定时间,通过监视多个操作中确定在过滤系统中使用的过滤元件的电阻值 系统参数; 使用确定的电阻值计算表示所述过滤系统的反冲洗循环的效率的回洗效率值; 并根据所计算的回洗效率的值来控制过滤系统的操作。
    • 7. 发明授权
    • Cleaning of hollow fibre membranes
    • 清洁中空纤维膜
    • US6159373A
    • 2000-12-12
    • US809679
    • 1997-08-08
    • Thomas William BeckHumphrey John Jardine DrummondMatthew Brian LeeClint Virgil KoppWarren Thomas Johnson
    • Thomas William BeckHumphrey John Jardine DrummondMatthew Brian LeeClint Virgil KoppWarren Thomas Johnson
    • B01D29/11B01D61/18B01D61/20B01D61/22B01D63/02B01D65/00B01D65/02B01D65/08B01D61/00
    • B01D65/02B01D29/115B01D2321/04B01D2321/185B01D2321/2066
    • A method and apparatus for recovering fine solids from a liquid feed suspension is disclosed. The apparatus has an operating cycle including a concentration part of the cycle in which solids present in the feed suspension are concentrated and a backwash part of the cycle in which supply of feed suspension to the concentrator is interrupted, the concentrator comprises a shell (11), and a plurality of elastic, hollow, microporous, polymer fibers (12) being fixed at their ends within the shell (11). Pressurized feed suspension is supplied to the outside of the fibers during said concentration part of the cycle and the filtrate may be withdrawn from the fiber lumens during the operating cycle. During the backwash cycle the concentration part of the cycle is terminated by ceasing supply of feed to said exterior surface of the fibers (12). The shell (11) is then sealed and the remaining filtrate removed from the lumens. A source of fluid under pressure is then applied to said lumens before, at the same time as, or just after opening the shell (11) to atmosphere, to cause explosive decompression through the walls of the fibers (12) whereby the fluid under pressure passes through said walls. The pressure level in said lumens is maintained at a predetermined value for a sufficient time following said decompression to cause substantial portions of solids lodged within and/or on the fiber walls to be dislodged. The dislodged contaminant matter is then washed away by the application of a flow of liquid over the surface of the fiber walls; and the concentration part of the operating cycle is recommended by introducing the supply of feed suspension to said exterior surface of said fibers (12).
    • PCT No.PCT / AU95 / 00587 Sec。 371日期:1997年8月8日 102(e)日期1997年8月8日PCT提交1995年9月8日PCT公布。 公开号WO96 / 07470 日期:1996年3月14日公开了一种从液体进料悬浮液中回收细小固体的方法和装置。 该装置具有操作循环,其包括循环的浓度部分,其中进料悬浮液中存在的固体浓缩,并且在循环中的反冲洗部分,其中供给浓缩器的进料悬浮液被中断,所述浓缩器包括壳体(11) ,以及多个弹性中空微孔聚合物纤维(12),其端部固定在壳体(11)内。 加压进料悬浮液在循环的所述浓缩部分期间供应到纤维的外部,并且在操作循环期间可以将滤液从纤维流体中排出。 在回洗循环期间,循环的浓缩部分通过停止向纤维(12)的所述外表面的供给供给来终止。 然后将壳体(11)密封,并将剩余的滤液从管腔中移出。 然后在将壳体(11)打开到大气之前,同时或刚刚打开壳体(11)之后,将压力下的流体源施加到所述内腔,以通过纤维(12)的壁引起爆炸性减压,由此压力下的流体 穿过所述墙壁。 在所述减压之后,所述内腔中的压力水平保持在预定值足够的时间,以使得在纤维壁内和/或纤维壁上的大部分固体被移出。 然后通过在纤维壁的表面上施加液体流将洗脱的污染物质洗掉; 并且通过将进料悬浮液的供应引入所述纤维(12)的所述外表面来推荐操作循环的浓度部分。
    • 9. 发明授权
    • High solids module
    • 高固体模块
    • US07018533B2
    • 2006-03-28
    • US10802691
    • 2004-03-16
    • Warren Thomas JohnsonThomas William Beck
    • Warren Thomas JohnsonThomas William Beck
    • B01D65/02
    • B01D63/024B01D65/02B01D2321/04B01D2321/185
    • A method of cleaning a membrane filtration module is disclosed. The module comprises at least one or more longitudinally extending membranes located in a feed-containing vessel. The membranes have a permeable wall which is subjected to a filtration operation wherein feed containing contaminant matter is applied to one side of the membrane wall and filtrate is withdrawn from the other side of the membrane wall. The method comprises the steps of suspending the filtration operation; performing a cleaning process on the membrane wall to dislodge contaminant matter from the membrane wall into liquid surrounding the membrane: performing a sweep of the feed-containing vessel substantially parallel to the longitudinally extending membranes to remove the liquid containing the dislodged contaminant matter, at least in part, through an opening in a header or other part of the module, and then recommencing the filtration operation.
    • 公开了一种清洁膜过滤组件的方法。 模块包括位于含进料容器中的至少一个或多个纵向延伸的膜。 膜具有可渗透的壁,其进行过滤操作,其中将含有污染物质的进料施加到膜壁的一侧,并且滤液从膜壁的另一侧排出。 该方法包括悬浮过滤操作的步骤; 在膜壁上执行清洁过程以将污染物质从膜壁移走到围绕膜的液体中:执行基本上平行于纵向延伸的膜的含饲料容器的扫描,以除去含有脱落的污染物质的液体,至少 部分地通过头部或模块的其他部分中的开口,然后重新开始过滤操作。