The characteristics of fine fluorocarbon-containing waste from aluminum production are given and the influence of changes in aluminum production technology that have occurred in recent years on the formation structure, composition and properties is analyzed. The currently proposed methods for processing these wastes are reviewed. An assessment of the method for processing fine fluorocarbon-containing waste from aluminum production was carried out on the example of coal foam flotation tailings using the method of causticization with lime milk to produce a product containing synthetic fluorite, used as a mineralizer for the preparation of straight cement. The influence of operating parameters (temperature, process time, dilution) on the completeness of causticization of raw materials has been determined. The greatest influence on the extraction of fluorine into fluorite and sodium into solution is exerted by the liquid to solid ratio (L:S), at that, the yield of fluorite reaching 220 kg per ton of supplied raw material. It has been found that the high alkalinity of the solution allows sodium hydroxide to be extracted from it and used after causticization as a gas cleaning solution.

A review of scientific and technical literature devoted to the issues of recycling industrial waste from condensed energy systems, which is wastewater sludge from sludge reservoirs of the production facilities, containing cellulose nitrates, has been carried out. Waste sampling was carried out at one of the industry facilities. Using X-ray fluorescence analysis and IR spectroscopy, the chemical composition of the waste has been determined and its environmental hazard class was calculated. Reagents for the destruction of the main component of the waste, as well as the conditions for its recycling, were experimentally selected. Nine compositions of mineral additives based on waste sludge have been obtained, their hazard class and their chemical composition were determined, as well as their effectiveness when applied to podzolic soils.

The following sources of UV radiation used for photochemical wastewater treatment are considered: medium and low pressure mercury lamps, KrCl and KrBr excimer lamps, and a pulsed xenon lamp. On the example of photolysis of terephthalic acid (TPA), various parameters were calculated that allow quantitative comparison of UV sources: radiation efficiency, quantum output of the process, specific energy and operating costs for the destruction of the target pollutant.

A method is proposed for producing a powdered combined reagent, including an aluminum-silicon coagulant-flocculant, a sorption material and an acidity regulator of treated wastewater, as well as using this reagent in the treatment system of multi-component urban wastewater treatment plants. It has been shown that the use of powdered reagents of various compositions ensures purification efficiency for suspended solids in the range from 66.1 to 94.1 %, and for COD – from 70.1 to 78.0 %.

Sorptive mineral materials have been analyzed for their suitability for purifying the hydrogen-containing gases from non-flammable components (carbon dioxide) with the possibility of use on an industrial scale. The sorption capacity of the following adsorbents has been revealed: activated carbon, zeolite, bentonite, silica gel, slaked- and quicklime, highly basic anion exchange resin. It has been concluded that the highest adsorption capacity is possessed by: quicklime and slaked lime, as well as zeolite soaked in a solution of sodium hydroxide.

The environmental situation has been analyzed in the context of the emergence of environmental risks in the territories of construction sites in the city of Rostov-on-Don. In order to effectively regulate the environmental risks, it has been recommended to introduce the rating management in as per the characteristics of each existing facility.

Research and assessment of soil contamination with heavy metals and arsenic in Komsomolsk-on-Amur have been carried out. High levels of soil contamination with heavy metals have been found — toxicants of hazard classes 1 and 2, among which the largest participation of zinc, lead, copper and cadmium has been recorded. It has been noted that the high content of arsenic in soils may be due to both technogenic influence and natural features of the area under study. A comparison has been made of the contents of heavy metals and arsenic in the soils of the city of Komsomolsk-on-Amur with the local natural background and technogenic background concentrations of other industrial cities in Russia and China. Two main technogenic geochemical anomalies (zones of increased pollution levels) associated with the main industrial hubs of the city have been identified.

Analysis of the composition and transformation of organic compounds in water obtained at a surface water intake of a large urban agglomeration (by the example of the city of Ufa) and used to arrange water supply for the population and the industrial sector has been carried out. Using gas and liquid chromatography with various types of detection, more than 250 organic compounds in the supplied water have been determined. It has been revealed that when transporting water, the concentration of organic compounds of technogenic nature (phthalates, polyaromatic hydrocarbons, alkylbenzenes, etc.) does not change. It has been concluded that in remote, dead-end and stagnant zones of the urban water distribution network, the presence of additional organic pollutants not identified in drinking water leaving water treatment facilities, has not been detected.

An analysis of the requirements of regulatory documents of the Russian Federation for measurements carried out to determine the values of quality indicators of natural environments (atmospheric air, soil, water) has been presented. It has been shown that when determining the true value of the content of a pollutant in environmental components, as well as when comparing measurement values with each other or with limit values (including when establishing the excess of a certain content of a controlled indicator in relation to the established standard), it is necessary to take into account the measurement range and limits of permissible error. The conclusion has been illustrated with specific examples that in case of violation of the requirements of regulatory documents and neglect of the measurement error range, the results obtained from laboratory tests cannot be objective, reliable and justified.

Analysis of the budget expenditures of the entities of the Arctic zone of the Russian Federation on environmental protection has been presented. In this region, a special impact of the mining and fuel and energy industries on the environment has been noted, as well as significant accumulated damage and an increase in anthropogenic impact on it at a rate exceeding the growth of investment. The imbalance in the structure of the state environmental protection program in terms of its content has been displayed using the example of the Republic of Sakha (Yakutia). It has been concluded that the contribution of the consolidated budgets of the constituent entities of the RF in financing environmental protection measures has been increasing over the past few years, however, existing sources of financing are not enough to implement the transition to sustainable development.