Taikisha Ltd.

Yasuhiko Sakota

Toshihiko Koike

Yoshikazu Hayashi

The amount of wash water to be consumed in an electrodeposition coating facility and the amount of used wash water to be discharged that requires post-treatment are reduced. To achieve this object, an electrodeposition coating facility that includes a degreasing process section A, a post-degreasing rinse section B, a chemical conversion process section C, a post-chemical-conversion rinse section D, an electrodeposition coating section E, and a post-electrodeposition rinse section F is provided with a filtration process apparatusand a wash water recycling line. The filtration process apparatusperforms a filtration process on wash water W after being used to wash an object to be coatedin the post-electrodeposition rinse section F. The wash water recycling linefeeds, to the post-chemical-conversion rinse section D, the wash water W after being subjected to the filtration process in the filtration process apparatusas wash water W to be used to wash an object to be coated in the post-chemical-conversion rinse section D.

Electrodeposition coating facility

In a coating pretreatment facility using microbubbles, an arrangement is made to make it possible to form the facility compact and to reduce the initial cost and the running cost of the facility. A preliminary cleansing water supplying passageis provided for supplying cleansing waters W, Wused in cleansing of a coating subject article B in flushing sectionsfollowing a degreasing sectionas preliminary cleansing water Wfor use in preliminary cleansing of the coating subject article B in a preliminary cleansing section. A microbubble generator deviceis provided for causing the preliminary cleansing water Wused in the preliminary cleansing of the coating subject article B in the preliminary cleansing sectionto contain microbubbles.

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Tokyo, Japan

Yasuhiko Sakota