Review article

At present, the problem of pollution of discharged atmospheric waters with oil products and suspended solids has become more acute. The disperse composition of impurities in such effluents is practically not studied, the local treatment facilities proposed for them are imperfect, and the methods of their calculation are poorly developed. The purpose of this study is to analyze the dispersion composition of surface wastewater from the territory of a motor transport enterprise for the calculation of coalescent separators included in the treatment facilities. There has been performed an experimental study of the size distribution of petroleum product droplets and solid suspensions in storm water and melt water. It is shown which sizes of droplets of petroleum products and solid particles prevail in wastewater. Numerical experiments according to the previously proposed mathematical model and our laboratory studies have been carried out, the results of which allow us to expect high values of the degree of effluent purification from emulsified oil products in the coalescent separator.