Method for manufacturing polyamide hollow fiber membrane, hollow fiber membrane module, and polyamide hollow fiber membrane

Abstract

The purpose of this invention is to provide a polyamide hollow fiber membrane, a hollow fiber membrane module, and a method for manufacturing a polyamide hollow fiber membrane. The filtration performance of the polyamide hollow fiber membrane remains relatively stable even after prolonged storage in a storage solution. The polyamide hollow fiber membrane of this invention is formed from polyamide resin and satisfies at least one of the following characteristics (1) to (5): (1) Fe content is less than 4.30 ppm; (2) Cr content is less than 1.00 ppm; (3) Cu content is less than 0.20 ppm; (4) Mg content is less than 0.60 ppm; (5) Zn content is less than 0.30 ppm.

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