REVERSE OSMOSIS MEMBRANE CLEANING AGENT CLEANING LIQUID AND CLEANING METHOD

摘要

A cleaning agent for RO membranes that effectively removes contaminants that cannot be sufficiently removed with conventional cleaning agents when the RO membrane used for water treatment, especially the aromatic polyamide-based RO membrane, is contaminated and the performance such as the permeate flow rate, differential pressure, and desalination rate is reduced. contains an aliphatic amide and/or an aromatic amide. A method for cleaning RO membranes using this cleaning agent or cleaning solution. Aliphatic amides and/or aromatic amides, especially water-soluble and relatively low molecular weight aliphatic amides and/or aromatic amides, impart a high cleaning effect to contaminants adhering to the aromatic polyamide-based RO membrane.