The process of liquid-phase oxidation of sulfide-containing wastewater by oxygen over porous graphite material "Sibunite" used as a catalyst and adsorbent has been studied. The purification process consists of two consecutive stages. The use of "Sibunite" as a catalyst in oxidation reactions and adsorbent for extraction of organic substances from wastewater allows to carry out oxidation of sulfide ions to sulfates at T=110-130°C (stage 1) and oxidation of organosulfur and organic components at T=200-240°C (stage 2) and completely solve the problem of neutralization of toxic substances contained in alkaline hydrogen sulfide wastewater.
On the basis of analysis of methods of wastewater and solution purification by catalytic method and modeling of reactions of oxidation of solutions containing oxygen, chlorine and nitrogenous substances using various catalysts, catalytic systems of utilization and processing of aqueous wastewater and solutions are recommended for use in the main and auxiliary technological processes of many industries. The study of carbon, platinum-palladium-carbon materials for gas-phase oxidation provides wastewater treatment from organic and inorganic substances by their transformation into nitrogen, carbon dioxide and water. The final products of oxidation of organic compounds containing nitrogen, ammonia and chlorine, depending on the process parameters and type of catalyst are found.
