Abstract
Industrial wastewaters containing high concentrations of chemical substances were treated using a method of thermocatalytic oxidation. A number of selected examples of the application of this method have been presented. Wastewaters containing non-ionic detergents were oxidized in the presence of catalyst. High degrees of oxidation over 97% were obtained. The consumption of electrical energy, was 10 kWh kg COD under optimum conditions. Exhausted cooling oil-emulsions, were treated autothermically in the presence of catalyst. A high degree of oxidation of organic substances over 99% was obtained. Copper was recovered from the wastewaters electrochemically with an efficiency of 90%. The wastewaters from the production of phenol-formaldehyde resins, were treated in the presence of catalysts. High degrees of oxidation over 99% were obtained. In each of examples presented copper-zinc catalyst was used at a temperature of 400–700 °C. The examples testify to very high efficiency of the method for thermocatalytic oxidation of industrial wastewaters hazardous for the aqueous environment.
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