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    • 1. 发明申请
    • METHOD OF CLEANING FOULED AND/OR SCALED MEMBRANES
    • 清洗和/或定尺寸膜的方法
    • WO2008137663A1
    • 2008-11-13
    • PCT/US2008/062399
    • 2008-05-02
    • NALCO COMPANYMUSALE, Deepak A.
    • MUSALE, Deepak A.
    • B01D65/02B01D61/14
    • B01D65/02B01D2321/04B01D2321/08B01D2321/168B01D2321/28B01D2321/32
    • A method of cleaning a fouled and/or scaled UF or MF membrane with a solution containing one or more thermo-responsive polymers is disclosed. More specifically, the method comprises: (a) treating the membrane in a membrane separation system with a solution containing one or more TRP, wherein said TRP is soluble in said solution and at least an effective amount of said TRP diffuses into a foulant layer that is present on the surface and/or in pores of said membrane; (b) making insoluble said TRP diffused into said foulant layer; (c) optionally rinsing the membrane; (d) optionally backwashing the membrane with air and/or liquid between the steps (b) and (c); and (e) optionally backwashing the membrane with air and/or liquid after the membrane is rinsed in step (c).
    • 公开了一种用含有一种或多种热响应性聚合物的溶液清洗污垢和/或缩放UF或MF膜的方法。 更具体地说,该方法包括:(a)用含有一种或多种TRP的溶液处理膜分离系统中的膜,其中所述TRP可溶于所述溶液中,并且至少有效量的所述TRP扩散到污垢层中, 存在于所述膜的表面和/或孔中; (b)使不溶性的所述TRP扩散到所述污垢层中; (c)任选地冲洗膜; (d)任选地在步骤(b)和(c)之间用空气和/或液体反洗膜; 和(e)在步骤(c)中冲洗膜后,任选地用空气和/或液体反洗膜。