METHOD OF TREATING WASHING WATER AFTER COATING SURFACE TREATMENT, AND METHOD OF TREATING COATING SURFACE TREATING LIQUID

摘要

PROBLEM TO BE SOLVED: To provide a method of reusing coating surface treating component particles by separating coating surface treatment particles and floating solid matter from a washing water after a coating surface treatment for producing a coating surface treatment film having a thickness of several tens nm, by using a filter membrane.;SOLUTION: The washing water after coating surface treatment is separated into a concentrated liquid and a permeating liquid by using an ultrafilter membrane to reuse the permeating liquid for a coating surface treating liquid.;COPYRIGHT: (C)2008,JPO&INPIT