This article presents relevance of distance learning technologies in the current stage of public relations evolution owing to the development level of electronic devices for data transfer, processes of economic integration, the need to “socialize” for people with limited mobility, the need for lifelong learning, and changing conditions of interaction during 2020th pandemic. Based on the analysis of legal as well as organizational and methodological documentation, the available educational experience of general and higher education teachers and our observations, an attempt is made to summarize the challenges of distance learning caused by the imperfection of distance learning regulation, insufficient development of theoretical backgrounds and methodology of distance learning. The mechanism for using ICT technologies in distance learning is also insufficiently developed. This article reveals the decline risks in the quality of education and threats to the health of students in the realization of distance learning. Our own experience in the implementation of distance learning using the “flipped classroom” technology is given.

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Various methods and stages of industrial wastewater treatment from polycyclic aromatic hydrocarbons are estimated in the article. The development of technologies for the removal of toxic compounds from industrial wastewater is one of the key tasks for solving the problems of sustainable development. First of all, it is related to the fact that toxic compounds adversely affect the efficiency of wastewater treatment. They are not neutralized in natural processes, negatively affect the environment and, as a consequence the human health. Toxic compounds deplete nature’s ability to perform self purification and restoration of resources. One one of the most important resources is water. These toxic compounds include polycyclic aromatic hydrocarbons.

The article discusses the issues of construction of a digital model of aluminum electrolysis modes. Target hypotheses identified as priority ones have been worked out: recommendations for AlF3 supply, forecast of the electrolyzer overhaul. For the selected hypotheses, models have been built and studies on an expanded data set have been carried out. The results of the work showed that the models have been trained and are ready for use with the required accuracy of obtaining the results. In addition, prototypes of management systems for influencing tools have been built, control parameters have been determined. The scenarios for use of models in real production have been identified and described. The results at this stage allow starting a full-fledged production experiment, which will make it possible to determine the parameters of models introduction into production processes.

Over the past years, there has been an intensive development of interactive technologies that make it possible to intensify the operational processes of cleaning, transportation, purification from impurities, drying and storage of various products. The agriculture of Russia, as an integral part of the agro-industrial complex, shall be able to use broadband, mobile LPWAN communications, information technologies (Big Data, artificial intelligence, control platforms), radio frequency tags, controllers, sensors, domestic instrumentation controls to significantly increase the efficiency. The potential for modernization of the industry is quite huge. The development and improvement of working bodies make it possible to create machines and working bodies for work in difficult climatic conditions. However, it is quite difficult to set up machines to work within specific climatic conditions, which often limits the effectiveness of the application of innovative developments in different regions of the Russian Federation.