REVERSE OSMOSIS MEMBRANE WATER PURIFICATION APPARATUS WITH REGENERABLE REVERSE OSMOSIS MEMBRANE

摘要

PROBLEM TO BE SOLVED: To provide a reverse osmosis membrane water purification apparatus in which the capacity of a used reverse osmosis membrane can be regenerated.;SOLUTION: A direct reverse osmosis membrane water purification apparatus 100 for producing purified water 63 from raw water 61 comprises: a reverse osmosis membrane module 20; a raw water supply line 25a connected to a raw water supply port 25 of the reverse osmosis membrane module 20; a permeate line 24a connected to a permeate port 24; and a concentrated water line 23a connected to a concentrated water port 23. The concentrated water line 23a is provided with a flow adjustment valve 64 (valve 64 with a resistance 64a), and a rinsing water line 54 through which first rinsing water (55) such as RO water or tap water passes is connected to the permeate port 24 of the reverse osmosis membrane module (20). The raw water supply line 25a serves also as a flushing line through which second rinsing liquid containing a chelating agent passes.;SELECTED DRAWING: Figure 9A;COPYRIGHT: (C)2016,JPO&INPIT