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    • 7. 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operation wherein feed containing contaminant matter is applied to one side of the membrane wall and filtrate is withdrawn from the other side of the membrane wall, the method including: removing liquid from the feed-containing vessel (3) until the level of liquid in the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。
    • 8. 发明申请
    • Reduced Backwash Volume Process
    • 减少反冲洗体积过程
    • US20080257822A1
    • 2008-10-23
    • US12096279
    • 2006-12-11
    • Warren Thomas Johnson
    • Warren Thomas Johnson
    • B01D65/02
    • B01D65/02B01D61/22B01D2311/16B01D2321/04B01D2321/12B01D2321/185
    • A method of backwashing a membrane filtration module, where the module includes one or more membranes located in a feed-containing vessel. The membranes having a permeable wall which is subjected to a filtration operation wherein feed liquid containing contaminant matter is applied to one side of the membrane wall and filtrate is withdrawn from the other side of the membrane wall.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 includes the steps of suspending the filtration operation; aerating the membrane surface with gas bubbles to dislodge fouling materials therefrom; recommencing the filtration operation while suspending the flow of feed liquid to the feed-containing vessel for a predetermined period; again suspending the filtration operation; performing a liquid backwash of the membrane wall to dislodge fouling materials therefrom; removing at least some of the liquid containing the dislodged contaminant matter from the feed-containing vessel; and then recommencing the filtration operation.
    • 一种反洗膜过滤模块的方法,其中模块包括位于含进料容器中的一个或多个膜。 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液施加到膜壁的一侧,滤液从膜壁的另一侧排出。 该方法包括暂停过滤操作的步骤; 用气泡对膜表面进行充气以从其中去除污垢物质; 重新进行过滤操作,同时将进料液体流入含饲料容器预定的时间; 再次暂停过滤操作; 执行膜壁的液体反冲洗以从其中去除污垢材料; 从含饲料容器中除去含有脱落的污染物质的至少一些液体; 然后重新进行过滤操作。
    • 9. 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。