REVERSE OSMOSIS COMPOSITE HAVING HIGH FOULING RESISTANCE AND MANUFACTURING METHOD THEREOF

摘要

The present invention relates to a stain performance superior composite polyamide reverse osmosis membrane and method of manufacturing. The film within the reverse-to-contamination performance is excellent polyamide compound of the invention (a) a microporous support layer; (B) a polyamide layer on said microporous support layer; And (c) a hydrophilic coating on said polyamide layer; jidoe made of, is formed by a covalent bond between the amide amine compound wherein the hydrophilic coating layer containing residual acid halides and hydrophilic groups of the polyamide layer. Thus, to the hydrophilic coating layer is a polyamide reverse osmosis composite membrane excluded in initial salt upon long-term operation in contaminated condition rate and flow characteristics of the present invention maintain formed thereby, to continuously change the working pressure, or removed from, muljilreul contamination it is possible to omit the step of washing the composite membrane.