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    pH stable activated carbon
    3.
    发明公开
    pH stable activated carbon 有权
    pH稳定剂Aktivkohle

    公开(公告)号：EP2286886A1

    公开(公告)日：2011-02-23

    申请号：EP10180987.9

    申请日：2001-11-30

    申请人： Siemens Water Technologies Corp.

    发明人： Roodman, Robert G. ,  Smiley, Jack ,  Havelka, J. Michael ,  Scherrer, Robert

    IPC分类号： B01D15/00 ,  B01J20/20 ,  C01B31/12 ,  C02F1/28 ,  B01J20/22

    CPC分类号： B01J20/3204 ,  B01J20/20 ,  B01J20/22 ,  B01J20/3242 ,  B01J2220/46 ,  C02F1/283 ,  C02F1/285 ,  C02F1/288 ,  C02F2209/06

    摘要： An activated carbon composition is disclosed, which includes an activated carbon and a carboxylic acid containing compound. The activated carbon composition is prepared by immersing an activated carbon in an aqueous solution of a carboxylic acid containing compound. The activated carbon composition is used for purifying aqueous solutions by providing a bed of the activated carbon composition and passing the aqueous solution through the bed of the activated carbon composition. The aqueous solution is passed through the bed such that the flow of the aqueous solution to be purified into the bed and the flow of purified aqueous solution from the bed has a pH differential less than ± 1 pH.

    摘要翻译： 公开了一种活性炭组合物，其包括活性炭和含羧酸的化合物。 通过将活性炭浸渍在含羧酸化合物的水溶液中来制备活性炭组合物。 活性炭组合物用于通过提供活性炭组合物床并使水溶液通过活性炭组合物床来净化水溶液。 使水溶液通过床，使得要净化的水溶液流入床中，并且从床中纯化的水溶液的流量具有小于±1 pH的pH差异。

    METHOD OF CLEANING MEMBRANE MODULES
    4.
    发明授权
    METHOD OF CLEANING MEMBRANE MODULES 有权
    程序对清洁膜组件

    公开(公告)号：EP1420874B1

    公开(公告)日：2011-01-19

    申请号：EP02753913.9

    申请日：2002-08-08

    申请人： Siemens Water Technologies Corp.

    发明人： ZHA, Fufang ,  STUBBS, Anthony, James

    IPC分类号： B01D65/02

    CPC分类号： B01D65/02 ,  B01D2321/04 ,  B01D2321/12 ,  B01D2321/185

    摘要： A method of cleaning a membrane filtration module (6), the module (6) including at least one membrane (8) located in a feed-containing vessel (7), the membrane (8) 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operation wherein feed containing contaminant matter is applied to one side of the membrane wall and filtrate is withdrawn from the other side of the membrane wall.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 comprising the steps of: suspending the filtration operation; performing a cleaning process on the membrane wall to dislodge contaminant matter therefrom into liquid surrounding the membrane (8); performing a high velocity sweep of the feed-containing vessel (7) to remove the liquid containing the dislodged contaminant matter; and recommencing the filtration operation. An improved gas scouring method is also disclosed.

    CLEANING METHOD FOR SIMPLE FILTRATION SYSTEMS
    6.
    发明公开
    CLEANING METHOD FOR SIMPLE FILTRATION SYSTEMS 审中-公开
    清洗过程EASY过滤

    公开(公告)号：EP2158026A1

    公开(公告)日：2010-03-03

    申请号：EP08757004.0

    申请日：2008-06-25

    申请人： Siemens Water Technologies Corp.

    发明人： ZHA, Fufang ,  CAO, Zhiyi

    IPC分类号： B01D65/02 ,  B01D65/08

    CPC分类号： B01D65/02 ,  B01D2321/02 ,  B01D2321/185 ,  C02F1/444 ,  C02F2303/16

    摘要： A method of cleaning a permeable, hollow membrane (6) in an arrangement of the type wherein a pressure differential is applied across the wall of the permeable, hollow membrane (6) immersed in a liquid suspension provided in a vessel (5), said liquid suspension being applied to the outer surface of the permeable hollow membrane (6) to induce and sustain filtration through the membrane wall. The method of cleaning comprising the steps of: suspending the filtration process; while continuing to supply the liquid suspension to the vessel (5); aerating the membrane (6) by flowing gas into the vessel (5) to produce a flow of gas bubbles around the membrane (6) to dislodge at least some of the retained particulate material from the membrane surface; removing liquid containing dislodged particulate material from the vessel (5) during the aerating step and recommencing the filtration process.

    BIOLOGICAL PHOSPHOROUS REMOVAL
    10.
    发明公开
    BIOLOGICAL PHOSPHOROUS REMOVAL 审中-公开
    生物除磷

    公开(公告)号：EP1937604A1

    公开(公告)日：2008-07-02

    申请号：EP06760993.3

    申请日：2006-08-14

    申请人： Siemens Water Technologies Corp.

    发明人： ZHA, Fufang ,  JORDAN, Edward, John

    IPC分类号： C02F3/30 ,  C02F9/14

    CPC分类号： C02F3/1268 ,  C02F1/20 ,  C02F3/06 ,  C02F3/308 ,  C02F9/00 ,  C02F2101/105 ,  Y02W10/15 ,  Y10S210/903 ,  Y10S210/906

    摘要： A process for treating waste water to remove phosphorous and nitrogen in a treatment system including an anaerobic zone (5) containing an anaerobic mixed liquor having organisms which release phosphorous into the anaerobic mixed liquor; an anoxic zone (7) containing an anoxic mixed liquor having organisms which uptake phosphorous and denitrify the anoxic mixed liquor and an aerobic zone (9) containing an aerobic mixed liquor having organisms which uptake phosphorous and nitrify the aerobic mixed liquor; the process including the steps of providing wastewater to be treated into the anaerobic zone (5) and communicating anaerobic mixed liquor from the anaerobic zone (5) to the anoxic zone (7). The anoxic mixed liquor is then communicated from the anoxic zone (7) to the anaerobic zone (5) and the anoxic mixed liquor from the anoxic zone (7) to the aerobic zone (9). The aerobic mixed liquor is applied to a feed side of a membrane filter (10) to produce a treated effluent from a filtrate side of the membrane filter (10). Oxygen-containing gas bubbles is flowed past the feed side of the membrane filter (10) to remove accumulated solids. At least some of the material rejected by the membrane filter (10) is communicated to a degassing device (20) to remove some or all of any dissolved oxygen contained in the rejected material and the degassed material is communicated to the anoxic zone (7).