Hollow fiber type Forward Osmosis filtration membrane and the manufacturing method thereby

摘要

The present invention relates to a hollow fiber type forward osmosis membrane and a method for manufacturing the same, and more particularly, a polyamide layer is formed on the inner circumferential surface of a support layer of the hollow fiber type forward osmosis membrane, and the separation membrane is manufactured such that the support layer includes a sponge like structure By doing so, the possibility of cracking in the separation membrane can be reduced and salt removal performance and flow rate can be improved. In addition, as the polyamide layer is formed on the inner surface layer of the hollow fiber, a leak of the polyamide layer can be reduced, and even if a plurality of the separators are included in the module, the polyamide layer is formed by close contact between the hollow fibers. Because there is no fear of being damaged, the durability of the module can be significantly improved by preventing damage to the polyamide layer due to friction caused by compression between the hollow fiber nano-membrane even under high-pressure operating conditions, and thus the use cycle of the module can be increased. .