The synthesis of a complex adsorbent with magnetic properties and a method for removing emulsified oil products from wastewater using a magnetic field were proposed. Fine iron ore concentrate in the form of magnetite obtained by wet magnetic separation of crushed iron ore was introduced as a magnetic load. Breaking steelmaking slag obtained by dry air cooling was chosen as an adsorbing component. Process diagram for treatment of wastewater containing used up cutting-oils was detailed.

It is shown that the disposal of spent complex chemical power sources (CPS) leads to severe environmental pollution. An environmentally safe technology for their disposal has been developed, including the stages of mechanical processing, leaching and extraction. The article discusses the combined processes of processing spent CPS with the use of mechanochemical destruction. The work of opening the CPS on a shredder in an argon atmosphere, knife and ball mills is analyzed. The grinding of model media with different morphology in a drum mill and a toroidal vibrating mill (TVM) was studied, and the operating parameters of the drum mill in a waterfall mode were determined. A narrowing of the granulometric composition from a particle diameter of 2–3 mm to a diameter of 10–40 microns was revealed. It is shown that when CPS particles are ground in a ball mill at a ratio of balls and ground phase of 5:1, the content of cobalt in the powder increases to 19.0 wt %. The time for the complete cycle of CPS processing, including the stages of opening in an argon atmosphere, grinding, grinding, leaching and extraction, was established to be 7 hours.

The synthesis of a nanosized heterogeneous catalyst ZnFe₂O₄ by the microwave method and by the method of citrate combustion has been carried out. Chemical homogeneity, size, dispersion, and morphological features of nanopowders were characterised. Zinc ferrite synthesized by the citrate combustion method was chosen to study the catalytic properties in the processes of destruction of industrial toxicants. It was found that nanosized ZnFe₂O₄ (average particle size of about 50 nm) is an effective catalyst for the oxidation of organic dyes: methyl orange (destruction degree 46 %) and methylene blue (destruction degree 77 %) in Fenton processes without additional heating and ultraviolet irradiation. The results of the study can be used in the development of new systems for water treatment and ensuring the environmental safety of industrial enterprises using organic dyes in production cycles.

A comprehensive analysis of the state of a specially protected natural area disturbed by the disposal of waste — alcohol stillage is presented. The choice of a method for restoring the disturbed territory is presented and a technology for carrying out reclamation work has been developed, including the treatment of alcohol stillage waste, is developed.

The features of the impact on the natural environment of the gold-processing plant tailing dump are considered. The factors that slow down the natural recovery of disturbed areas have been revealed. Attention is drawn to the fact that it is necessary to carry out a biological stage of land recultivaiton with respect to the natural-geographical and socio-economic conditions of the area where the gold-processing plant is located in order to restore the productivity of disturbed lands. An algorithm of plants selection for biological recultivaiton is presented. The factors that can affect the successful reforestation of the area are specified.

Experimental data on the neutralization of soils contaminated with fuel oil, a complex encapsulated material, which includes quicklime and industrial animal fat were presented. Technical issues of the proposed technology implementation are highlighted, that is data on the characteristics and principle of operation of a mobile multifunctional installation for collecting and neutr alizing contaminated soils.

The results of dosimetric measurements which were carried out on the territory of the former Novotroitsk mining department quarry (Baley, Zabaykalsky region) are obtained. The map of radioactive contamination of the quarry territory is presented. A number of objects on the explored area where the gamma ray dose ambient equivalent is exceeds the maximum permissible level of 0.60 mSv/h were identified. The specific effective activity and chemical composition of a soil sample taken at one of the contaminated sites were determined. It is detected that the main source of radioactivity is ²³²Th nuclide, which is part of the mineral monazite. The possibility of effective concentration of thorium-containing minerals by gravitational separation was shown. The main factor of the spread of radioactive contamination is water erosion of soils from the walls of the quarry.

It is shown that it is necessary to switch from the nominal measurement scale used for assessing the quality of fresh water to a relative one, classifying objects in proportion to the degree of severity of the measured property. A modified Harrington desirability function is proposed, asymptotically tending to zero as the controlled indicator deviates from the nominal value, but still remaining different from zero and beyond the limits of the permissible interval within the limits of insignificant violations. The use of methodology for quantitative assessment of water quality by the content of non-ferrous metals in the river is considered. Iseti (g. Yekaterinburg).

A system of principles defining emergency response is proposed. The boundary conditions of emergency response are formulated. The consequences arising from the proposed principles are worked out. The significance of the emergency response principles is substantiated. A system of priorities for the implementation of the strategy of risk reduction and mitigation of the emergency consequences, arising from these principles, is proposed. Special attention is paid to the large university emergency response.

The data on the identification of differences in the reactions of the human cardiovascular system in the North of the Russian Federation in response to the action of industrial electromagnetic fields are presented. The reactions of female male organisms depending on the influence of the studied fields and age-related changes have been established.

Vehicle noise modeling on the territory of a multi-storey residential buildings was carried out using specialized Predictor software. The article presents the results of traffic noise propagation modeling for the areas of the Vernadsky and Lomonosovsky avenues of Moscow in the in the South-West Administrative District of Moscow, compared data with measurement at control points demonstrate a high convergence of calculated and measured values. The noice propagation within a residential area was analyzed. It was shown that multi-entrance houses located close to the roadways act as acoustic screens reducing the sound level by about 20 dBA. Zoning of the study area was performed according to the level of noise impact.

The fundamental problems of statutory and technical regulation of oil and gas facilities explosion safety in Russia are considered. The main tasks that need to be solved by companies operating facilities with explosive zones to ensure safety are identified.