TREATING METHOD FOR WASTE PLATING-WATER

摘要

A completely closed-systemized method for treating a metal surface treatment soln. and a wash liquid from the metal surface treatment was described. Effective ingredients of the treatment soln. contained in a process soln. having a countercurrent flow to a surface-treated article which was transported to a treatment bath(b) and more than one washing bath(C) sequentially were sepd. and recovered by introducing the process soln. into a concentration process.