Membrane cleaning control method, membrane cleaning control device, and water treatment system

摘要

PROBLEM TO BE SOLVED: To provide a membrane washing control method that can efficiently wash a membrane filter with a reduced amount of chemical liquid, and to provide a membrane washing control device, and a water treatment system.SOLUTION: The membrane washing control method includes: an acquisition process; and a determination step. The acquisition process acquires a transmembrane pressure difference value of the membrane filter or membrane filtration resistance value immediately after washing the membrane filter with the chemical liquid. The determination step determines washing strength in performing the next chemical liquid washing on the basis of the transmembrane pressure difference value or membrane filtration resistance value.SELECTED DRAWING: None