NOVELTY - A processing apparatus (10) of the metal-plating waste liquid (1) comprises an ozone supply unit (7) to supply ozone, fine bubble generation unit (5) for generating fine bubble using ozone supplied by ozone supply unit in the metal-plating waste liquid and an electrolytic oxidation unit (6) to perform an electrolytic oxidation with respect to the metal-ion removal metal-plating waste liquid. The processing apparatus decomposes the organic substance component in the metal-ion removal metal-plating waste liquid.    USE - Processing apparatus is used for manufacture of phosphoric acid containing fertilizer solution (claimed) and for processing metal-plating waste liquid.    ADVANTAGE - The processing apparatus enables efficient processing of metal-plating waste liquid, and manufacture of phosphoric acid containing fertilizer solution.    DETAILED DESCRIPTION - A processing apparatus of the metal-plating waste liquid comprises an ozone supply unit to supply ozone, fine bubble generation unit for generating fine bubble using ozone supplied by ozone supply unit in the metal-plating waste liquid and an electrolytic oxidation unit to perform an electrolytic oxidation with respect to the metal-ion removal metal-plating waste liquid. The processing apparatus decomposes the organic substance component in the metal-ion removal metal-plating waste liquid while oxidizing the hypophosphite ion and phosphite ion which are contained in the metal-ion removal metal-plating waste liquid obtained by removing a metal ion from a metal-plating waste liquid. An INDEPENDENT CLAIM is included for manufacture of phosphoric acid containing fertilizer solution, which involves decomposing the organic substance component in the metal-ion removal metal plating waste liquid, while oxidizing the hypophosphite ion and phosphite ion which are contained in the metal-ion removal metal-plating waste liquid obtained by removing a metal ion from a metal-plating waste liquid, generating fine bubble of ozone in the metal-ion removal metal-plating waste liquid, and carrying out the electrolytic oxidation.    DESCRIPTION OF DRAWING(S) - The drawing shows schematic view of processing apparatus. (Drawing includes non-English language text)    Metal-plating waste liquid (1)    Fine bubble generation unit (5)    Microbubble (5a)    Electrolytic oxidation unit (6)    Ozone supply unit (7)    Processing apparatus (10)