| 摘要 |
PROBLEM TO BE SOLVED: To provide a high-strength polymer porus flat film sheet for an MBR which maintains a hydrophilic property, high water permeability, and fouling-resistance of a surface of a polymer porus film for a long period of time.SOLUTION: A polymer porus flat film sheet for an MBR is structured of a polymer porus film which forms a net-like network structure, and a sheet-like base material for supporting the polymer porus film. The polymer porus film is formed of polyvinyl chloride and/or chlorinated polyvinyl chloride. A surface of the polymer porus film is coated and fixed with hydroxypropyl cellulose which is not heat-denatured. A ratio of the coating hydroxypropyl cellulose to the polymer porus film is 0.4-1.0 wt.%. |
