chlorination

The results of research on physical and chemical methods for the preliminary treatment of wastewater of a cardboard and paper factory in Khmelnytskyi region of Ukraine are presented. At the cardboard and paper factory, wastewater is treated at a sewage treatment plant, which includes sand traps, primary radial sedimentation tanks, aeration tanks with activated sludge regenerators, secondary radial sedimentation tanks, and bioponds. The use of coagulation and chlorination methods before biological treatment in aeration tanks was proposed.

The structure of CuCl2, CuCl catalyst active centres on the surface of γ-Al2O3 has been investigated on the basis of X-ray diffraction analysis. The influence of the catalyst structure on the mechanism of ethylene oxidative chlorination has been determined. Using mass spectroscopy the difference in the structure of active centers and the mechanism of the deposited and impregnated types of CuCl2, CuCl/γ-Al2O3 catalysts in the process of ethylene oxidative chlorination into 1,2-dichlorethane has been studied.