DEFORMED POROUS HOLLOW FIBER MEMBRANE, PRODUCTION METHOD OF DEFORMED POROUS HOLLOW FIBER MEMBRANE, AND MODULE, FILTRATION DEVICE, AND WATER TREATMENT METHOD IN WHICH DEFORMED POROUS HOLLOW FIBER MEMBRANE IS USED

摘要

A porous hollow fiber membrane that is suitable for treatment of liquid containing an inorganic substance and/or an organic substance, is obtained at a low cost performance, and has high water permeability performance, fretting resistance, and drying resistance. A deformed porous hollow fiber membrane according to the present invention is composed of a thermoplastic resin and includes a continuous asperity provided on the periphery in the longitudinal direction of the membrane, in which the periphery of the hollow fiber membrane in the circumferential direction includes continuous projected and depressed parts.