METHOD FOR RECYCLING POLE LIQUID, APPARATUS FOR RECYCLING POLE LIQUID, AND ELECTRODEPOSITION COATING APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a method for recycling a pole liquid, which effectively recycles it for various kinds of treatment in an electrodeposition process, without returning the pole liquid to a pole liquid tank and without immediately discarding it; an apparatus for recycling the pole liquid; and an electrodeposition coating apparatus. SOLUTION: The method for recycling the pole liquid in a diaphragm chamber of a diaphragm electrode (1) which is arranged in an electrodeposition tank and is provided with an anionic film and/or a neutral film comprises: arranging a diaphragm electrode (2) provided with an amphoteric membrane, and/or a bare electrode in the electrodeposition tank; controlling the ratio of electrolyzing quantity for the diaphragm electrode (1) to electrolyzing quantity for the diaphragm electrode (2) and/or the bare electrode to 90/10 to 20/80, and electrodeposition-coating an article; removing cation from at least one part of the pole liquid, while circulating the pole liquid between the diaphragm chamber and the pole liquid tank capable of storing the pole liquid; and utilizing the pole liquid in at least one of electrodeposition coating treatment and rinsing treatment. The recycling apparatus and the electrodeposition coating apparatus are used for performing the method of recycling the pole liquid. COPYRIGHT: (C)2005,JPO&NCIPI