| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a film separation device operation method and an operation system capable of acquiring permeable water having good water quality from a large film separation device having a film element which is large in diameter, the diameter is 20 cm or more.SOLUTION: Provided is the film separation device operation method in which a film element 2 having diameter of 20 cm or more is installed in a cylindrical vessel 1. When a permeable water amount of the film separation device is a(m/h), a minimum aqueous brine amount of the film element 2 is b(m/h), and the number of film elements is n(n is 1 or more), water conduction is performed so that (a/n)/b becomes 0.1 to 0.2.</p> |
