Abstract: Degradation of sodium mnitrobenzene sulfonate was investigated by the catalytic wet peroxide oxidation (CWPO), and the removal effectiveness of the degradation were compared under conditions of different catalysts (Co/Bi, Mn/Ce, Cu/Mn/Ce, Cu(NO₃)₂, and activated carbon) and oxidants (peroxide and oxygen). Meanwhile, the effects of the reaction conditions, including reaction temperature, amounts of peroxide and catalyst, oxygen partial pressure and the initial concentration on the removal efficiencies were also discussed. The results show that sodium mnitrobenzene sulfonate was more efficiently decomposed by CWPO with Cu(NO₃)₂ as catalyst; the reaction temperature, am ounts of peroxide and sodium mnitrobenzene sulfonate have significant influence on the degradation reaction. Besides, the addition of oxygen and catalyst can enhancethe degradation efficiency. Otherwise, the temperatureincreasing process has important influence on the degradation of sodium mnitrobenzene sulfonate through CWPO.

Key words: catalytic wet peroxide oxidation, electroplating waste water, sodium mnitrobenzene sulfonate, peroxide