Preparation method of catalytic particles for device for composite catalytic oxidation treatment on organic wastewater

The invention discloses a preparation method of catalytic particles for a device for composite catalytic oxidation treatment on organic wastewater. The method takes ceramic particles as carriers and comprises the steps of boiling the ceramic particles in 0.1mol/l hydrochloric acid and 0.1mol/l sodium hydroxide solution in turn for 30 minutes respectively; repeatedly flushing and soaking; draining the cleaned carriers, and drying at 105 DEG C for 10 hours; preparing a mixture from Mn(NO3)2, Ce(NO3)3 and RuCl3 at a molar ratio of 100:10:1; adding absolute ethyl alcohol into the mixture to obtain mixed liquid, wherein the content of metal salt in the mixed liquid is 5-10% by mass; adding 0.1mol/l hydrochloric acid solution accounting for 5% of the mixed liquid by volume to obtain impregnation liquid; putting the pretreated ceramic particles into the impregnation liquid, and dynamically soaking in a shaking table for 3 hours; filtering out the particles, and impregnating the ceramic particles with impregnation active components; drying and roasting for activation: drying the ceramic particles impregnated with the impregnation active components at 105 DEG C for 4 hours, and roasting for activation at 550 DGE C in a muffle for 3 hours; repeating the steps B3 and B4 for five times.