METHOD OF MEMBRANE SEPARATION AND MEMBRANE SEPARATION APPARATUS

摘要

A method of membrane separation and a membrane separation apparatus, by means of which not only a supply liquid can be evaluated but also the problems, such as scale, occurring on reverse osmosis membrane can be monitored in a highly straightforward fashion are disclosed. There is provided a membrane separation apparatus equipped with a reverse osmosis membrane module (3) so as to be adapted for feeding of a supply liquid and obtaining of a permeated liquid and a concentrated liquid, and is characterized by comprising feeding-side membrane separation means (10) which include a separation membrane (11) of which the membrane face (11a) can be monitored and guides the supply liquid so as to separate the membrane, and concentrating-side membrane separation means (20) which include a separation membrane (21) of which the membrane face (21a) can be monitored and guides the concentrated liquid so as to separate the membrane separation thereof.