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The decomposition kinetics of sulfonol (surfactant) in water solutions as well as the formation kinetics of decomposition products under the action of an oxygen dielectric barrier discharge (DBD) at atmospheric pressure in the presence or absence of TiO 2 , NiO and Ag 2 O catalysts in the plasma zone was studied. The DBD discharge was shown to have high decomposition efficiency (phenol-up to 98%, sulfonol-up to 80%). In a plasma-catalytic hybrid process, the efficiency of organic substances decomposition was higher than efficiency for the DBD treatment without catalyst. The catalysts application resulted in a change in the ratio and yield of decomposition products.

The catalytic properties of iron ions in the oxidative destruction of the active pharmaceutical ingredient paracetamol, in the presence of hydrogen peroxide have been investigated. It was found that in the presence of a homogeneous catalyst, the oxidation degree reaches more than 98%. The dependence of the oxidation efficiency on the concentration of the catalysts (hydrogen peroxide and ferrous ions) has been determined. A scheme for the treatment of pharmaceutical effluents is proposed, including the stages of homogeneous ozonation, coagulation of oxidative destruction and filtration products, and adsorption on activated carbon. The concentration of paracetamol and the chemical oxygen demand in the model solutions after treatment does not exceed the maximum permissible levels.

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