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AssigneeKansai Paint Co., Ltd.
InventorsTadamasa Hattori, Masahide Kawaraya, Osamu Isozaki, Naonori Miyata
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Provided is an efficient treating method for coating material waste water which meets a change in a concentration of contaminants contained in waste water and a change in a treating amount by converting scarcely decomposable substances contained in the coating material waste water to easily decomposable substances. The coating material waste water is irradiated with a micro wave to decompose organic substances contained in the above waste water. Further, the coating material waste water before irradiated with a micro wave may be subjected, if necessary, to coagulation treatment by a flocculant or electrolytic treatment. After irradiating with a micro wave to decompose scarcely decomposable substances contained in the waste water to easily decomposable substances, the resulting treated water is preferably fed to a biological reaction bath and subjected to biological treatment under aerobic or anaerobic atmosphere.
A treating method for coating material waste water characterized by irradiating coating material waste water with a micro wave to decompose scarcely decomposable substances contained in the waste water to easily decomposable substances and then feeding the resulting treated water to a biological reaction bath to subject it to biological treatment under aerobic or anaerobic atmosphere.
Dependencies are inferred from the claim text.