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    • 8. 发明申请
    • SPIRAL WOUND MEMBRANE ELEMENT AND METHOD FOR CLEANING SPIRAL WOUND MEMBRANE SHEET
    • 螺旋膜元件和清洁螺旋膜片的方法
    • WO2013155682A1
    • 2013-10-24
    • PCT/CN2012/074256
    • 2012-04-18
    • GENERAL ELECTRIC COMPANYWANG, ChangWANG, Chen
    • WANG, ChangWANG, Chen
    • B01D63/10B01D65/02
    • B01D63/10B01D61/12B01D63/103B01D63/106B01D65/02B01D2313/04B01D2313/08B01D2313/12B01D2313/18B01D2313/19B01D2313/23B01D2321/00B01D2321/06
    • A spiral wound membrane element (10) and a method for cleaning a spiral wound membrane sheet (18) are provided. The spiral wound membrane element (10) comprises a perforated central tube (16); one or more membrane sleeves (12), each sleeve (12) including two membrane sheets (18) enclosed at two edges (18a, 18b) around a feed spacer sheet (14) and wrapped around the central tube (16); a permeate carrier sheet (20) attached to the central tube (16) at a first edge (20a) opposite a second edge (20b); and a seal (23) on third and fourth edges (20c, 20d) of the permeate carrier sheet (20). The method comprises introducing two solution with different solute concentration to two sides of the spiral wound membrane sheet (18); establishing a concentration gradient between the first and second sides; communicating a first solvent from the first side to the second side to remove a foulant located on the second side of the membrane sheet (18); and collecting a waste stream that contains the foulant.
    • 提供螺旋卷绕膜元件(10)和清洁螺旋卷绕膜片(18)的方法。 螺旋缠绕膜元件(10)包括穿孔中心管(16); 一个或多个膜套(12),每个套筒(12)包括围绕进料间隔片(14)的两个边缘(18a,18b)封闭并缠绕在中心管(16)周围的两个膜片(18)。 在与第二边缘(20b)相对的第一边缘(20a)处附接到中心管(16)的渗透物载体片(20); 以及在所述渗透物载体片(20)的第三和第四边缘(20c,20d)上的密封件(23)。 该方法包括将具有不同溶质浓度的两种溶液引入螺旋缠绕膜片(18)的两侧; 建立第一和第二侧之间的浓度梯度; 将第一溶剂从第一侧传送到第二侧以除去位于膜片(18)的第二侧上的污物; 并收集含有污垢的废物流。