Кyrychenko O. Improving the ecological condition of facilities, waste and surface water are contaminated with oil products

Dissertation is dedicated to solution of an urgent task of environmental preserving and recovery by means of sewage and superficial water purification through application of natural and modified sorbents. Expediency of natural sorbents application that is bentonite and shell rock as well as their modified forms for polluted by petroleum products sewage and superficial water purification was substantiated. Technique of their application was approved. Influence of different modifiers on the properties of synthesized clay sorbents was determined. The fact that modifying of the surface of clay mineral by ferric (III) chloride results in an increase of its dispersivity, specific area and purifying ability was shown. It was determined that mechano-chemical hydrophobization by fumed silica with mass fraction 10 % of bentonite and shell rock increases its efficiency for polluted by petroleum products sewage and superficial water purification and decreases the risk level of sewage and superficial water pollution. Basic sorption and operating characteristics of investigated materials were determined. Production technology of natural and modified sorbents was improved that allows providing efficient use of resources and observance of environmental standarts for harmful effect on environment. Methodical approach to environmental risk assessment was presented.