MEMBRANE WITH A PATTERNED SURFACE, METHOD FOR MANUFACTURING SAME, AND WATER TREATMENT PROCESS USING SAME

摘要

The present invention provides a membrane in which the surface in contact with a fluid to be treated has repetitive convex-concave patterns. Further, the present invention provides a method for manufacturing a membrane, comprising the steps of (i) impregnating a mold, one surface of which has repetitive convex-concave patterns, with a polymer solution to form a mold-polymer layer laminate in which a polymer layer having a surface with image patterns inverse to the patterns of the mold is formed onto the patterns of the mold; and (ii) removing the mold from the mold-polymer layer laminate. As the membrane of the present invention has a patterned surface, the filtering area in contact with water to be treated is increased, and the membrane is protected from a cake layer which might otherwise stick to the membrane to cause a contamination of the membrane. Therefore, the membrane of the present invention significantly improves filtering performance when applied in water treatment processes.