methyl orange; azo dye; hydrogen peroxide; potassium metaperiodate; advanced oxidation processes; the “Sonoperoxate” process; degradation.

The efficiency of application of advanced oxidation processes for removal of methyl orange mono azo dye from wastewater is considered. For intensive oxidative degradation of methyl orange, it was proposed to use a combination of ultrasonic cavitation and “Peroxate” process – the “Sonoperoxate” process.