Significant oil losses in oil-containing wastes and their adverse impact on the region environmental setting bring about the need to develop an oil-containing wastes treatment technology. To tackle this issue, the authors have set an aim of designing a helio device and creating an oil-containing wastes treatment method based on it to extract oil products. Considering a widespread in the composition and properties of potential oil sludge raw materials and their tendency for either formation of stable emulsions or phase separation, we have conducted in-depth modern physical and chemical studies and defined the need to develop a commercial oil-containing wastes purification method. We have designed the device, in which oil product hydrocarbons undergo thermal treatment using solar energy. Following oil-containing wastes purification using solar energy, the particulate load in soil does not exceed 6.65–6.79 % and the absolute molecular weight of hydrocarbons approaches that of bitumen. The developed oil-containing wastes purification method solves an important environmental issue of oil-containing wastes recycling, promotes recovery, and prevents degradation of natural complexes, and reduces soil and water pollution.

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The article describes in detail the complex oil-containing waste treatment by applying solar energy. The developed Helio devices are equipped with concentrating elements to extract oil in the purification of dump oil. The questions of practical application of pre-treated oil-contaminated soils and oil sludge to strengthen road surfaces are considered. The results of the experimental study on the production of soil concrete is based on oily dump. The structures of the soil concrete made on the basis of oil-contaminated soils and oil sludge are investigated and relevant proposals are made.

Abstract. Possible solutions of this problem and environmental security are considered in this article, solutions are based on a scientific study on recovery and recycling of oily waste. The method of oil extraction in the purification of oil-containing wastes using solar energy is worked out, given method based on alternative methods of influencing the hydrocarbon structure. The experimental setup to extract oil in the purification of oil-contaminated waste is developed and described in detail. The results of experimental studies are given on the purification of waste oil in Helio device equipped with concentrating elements. Physical and chemical researches of the petropolluted waste before and after thermal treatment with application of solar energy are also conducted.

Soil degradation and, as a result, desertification is a global phenomenon, but in Kazakhstan it is felt most acutely. The main causes leading to desertification and adverse environmental changes include chemical contamination of the soil. Local and regional chemical pollution of soils is observed near cities and industrial enterprises, open-pit mining of mineral resources. The dominant group of chemical pollution will be oil itself, gas accompanying it, waste and underground mineralized water. The problem of detoxification, cleaning and restoring the properties and fertility of soils polluted with oil and oil products in order to prevent soil degradation is an important and most pressing issue at present. The main idea of the work is to create a solar complex for processing oil and gas waste with the development of fundamentally new solutions in the technological scheme for processing oily waste. In world practice, various methods of cleaning soil and water from oil pollution are applied: mechanical, physicochemical and biological. Not all of them are safe and effective. To solve the problems of anthropogenic pollution by oil and petroleum products, photothermal methods during cleaning to remove the hydrocarbon portion of the soil. The authors have created a solar system and developed a way to prevent soil degradation with the production of petroleum products. The scientific novelty of the work lies in the use of various types of solar constructions in the recycling and utilization of oily wastes, ensuring maximum separation of hydrocarbons from oil wastes, without prejudice to their chemical structure, in the manufacture of modern composite building materials, ensuring the intensification of hardening processes. The results show that an environmentally friendly method has been developed for cleaning oilpolluted soils, soils and oil sludge. This method solves an important environmental problem of cleaning oil-polluted soils, soils and oil sludge, helps restore and prevent the degradation of natural complexes, reduces pollution of the soil layer and water bodies. This will allow utilizing oil barns and sludge collectors in all oil-producing regions using solar energy.