The features of utilization of low-pressure gas emissions from reactors of a delayed coking installation are considered. A technical solution has been proposed for the compression and purification of low-pressure hydrocarbon gases from hydrogen sulfide by using a liquid-ring compressor with an amine solution mixed with a hydrocarbon fraction taken in a certain ratio as a working liquid. Gasolines, kerosene, diesel fuels and any other hydrocarbon mixtures with low viscosity can be used as the hydrocarbon fraction. Preferably use gaseous gasoline obtained during the compression of gas or distillate in the main distillation column. Test results and computational studies confirm the advantages of using a binary working fluid compared to using the components separately.

The most promising and demanded development lines of the present-day production are its intellectualization and robotic automation. The processing of organic agricultural waste traditionally features the least application of robots. One of the most advanced technologies for solid organic waste treatment is its aerobic solid-state fermentation. The intellectualized control system of a fermenter contributes to the final product quality enhancement: the self-heating rate of the fermented material is 44% higher and the temperature dispersion at the measurement points is 87% lower. The resulting reduction in energy consumption improves the profitability of this processing technology by 10% or more. Higher efficiency may be achieved by further refinement of the intellectualized control system of a fermenter.

The use of nanotechnogenic petrochemical raw materials-spent IM-2201 catalyst containing more than 70 % Al₂O₃, and as a clay binder-lowmelting clay from the Ilek Deposit in the Aktobe region allows you to get a ceramic brick that corresponds to the M150 brand. It is possible to build load-bearing walls of the lower floors of high-rise buildings (more than 10 floors) from M150 ceramic bricks. Innovative proposals for the use of waste from production and spent catalyst in the production of ceramic high-strength earthquake-resistant bricks with increased strength and frost resistance have been developed. The absolute advantage of using multi-tonnage waste and spent catalyst IM-2201 is to relieve the environmental situation.

The results of studies of obtaining road-building materials based on drill cuttings sampled from the fields of Western Siberia are presented. It was found that there is no excess of the standards for the content of heavy metals in a mobile form in the samples of drill cuttings. The possibility of obtaining cement-soil based on drill cuttings has been studied. In terms of physical and mechanical properties, cement soil samples are characterized by sufficient strength and belong to the M20 brand (the value of the ultimate compressive strength Rz = 3.99 MPa). The strength limit has been reduced to 0.88 MPa after freezing/thawing cycles, which indicates a lack of frost resistance to the resulting material. The use of such cement is possible only in countries characterized by a warm climate with positive temperature values.

The statistically significant geochemical dependences of the dynamic behavior of petroleum products in urban soils in the fuel filling station zone are considered, the areal of their distribution are determined. The techniques used make it possible not only to identify laterally manmade modules of environmental hazard (laterally module) when oil products come from fuel filling stations, but also to determine additional factors of unaccounted environmental risk, for example, the process of accumulation of heavy metals in the soil profile in excess of the standards on the resulting geochemical barrier in the form of oil products. The risk assessment of oil product supply facilities should be carried out taking into account the specifics of the distribution of toxicants in technogenically altered soils.

The results of the study of ecological and geochemical features and assessment of the water quality of water sources located on the territory of the Semipalatinsk test site are presented. The studied waters are diverse in chemical composition: 14 % of the samples had hydrocarbonate, 69 % – sulfate, and 17 % – chloride types of waters. On the basis of the revealed features of the elemental composition of the underground waters of the Semipalatinsk test site, decreasing series of excess of the average concentrations of elements in water in relation to the composition of waters of the zones of hypergenesis and continental salinization were constructed: U₁₄ > Mo₈ > Sr₈ > V₃ (hypergenesis zone), U₅ > Mo₃ > Sr₃ > V₂ (zone of continental salinization). For the groundwater of the Semipalatinsk test site, specific elements were identified, such as U, Mo, Sr and V. The water quality was assessed for the studied chemical components based on comparison with the standards of the Republic of Kazakhstan and the World Health Organization (SaNPiN No. 209, WHO 2011).

The possibility of using a sorption material based on apricot kernels for the extraction of methylene blue (MG) dye from aqueous media is considered. The maximum sorption capacity of the material was established – 0.58 mmol/g (185.6 mg/g). The obtained isotherm was processed within the framework of monomolecular and polymolecular adsorption models. The equations that most accurately describe the isotherm are determined, and the correlation coefficients are calculated. It has been shown that the sorption isotherm of the MG dye by the crushed apricot kernel (CCA) is best described by the Langmuir (R² = 0.9724) and Dubinin-Radushkevich (R² = 0.9818) models. However, when comparing the plots of the function A = f(C_e) of the sorption processes of the dye by the CCA sorbent according to the models under study with the experimental dependence, it was found that the sorption process is most accurately described by the sorption models of Dubinin-Radushkevich and Temkin. Using the equations of the Langmuir and Dubinin-Radushkevich models, the thermodynamic parameters of the process were calculated: the sorption energy (E = 8.066 kJ/ mol) and the Gibbs energy (∆G^o = -8.597 kJ/mol).

The results of studies of sea and river waters, soils of the territory adjacent to the Vanino transport and industrial hub are presented. Iron, manganese, copper and zinc have been identified as common priority pollutants of sea and river water. The quality of river waters of the Toki and Aya rivers, estimated by 14 hydrochemical indicators, is classified as "polluted". Local areas of peat-bog soil and brown soils belonging to the Toki river catchment area were identified as background areas in the studied territory.

The article presents results of a case study aimed at the analysis of environmental and technological modernization of an integrated pulp and paper mill. The peculiarities of technological industrial regulation based on the Best Available Techniques in the European Union and the Russian Federation are considered. The data on the resource efficiency and environmental performance indicators are provided for the pilot enterprise. The key role of the Best Available Techniques in developing new modern production processes and minimizing losses, waste generation and negative environmental impacts is shown. The contribution of the pilot enterprise towards achievement of the sustainable development goal (SDG) 12 “Ensure sustainable consumption and production patterns” is traced.

The species and ecological composition, production potential (phytomass) and spatial and temporal sustainability of phyto-fouling of the coastal hydraulic engineering structure have been studied. Macroalgae of 30 species, 20 genera, 12 families, 11 orders, 4 classes, 3 departments were found in the fouling formation. Taxonomic leaders of the community are Chlorophyta, Rhodophyta, Ulva, Cladophora, Ceramium, ecological leaders are marine, leading, annual and oligosaprobe species. Species with high rate of occurrence prevail in the fouling formation. Spatial variability of species’ composition and phytomass is moderate. Analysis of phyto-fouling in different years and seasons allowed to identify features that are stable in time and space or capable of transformation.

The article considers the method of assessing the ecological and economic potential according to the stochastic criterion model of ranking waste by useful (consumer) properties. The waste ranking algorithm presented in the work makes it possible to simplify the process of their involvement in secondary economic circulation, and therefore to increase the depth of waste disposal.

The aim of the study is to analyze the results of ecological monitoring of the aquatic biota of the river. Vychegda and their practical use on the example of water-intensive pulp and paper production. The availability of the results of our own studies of the actual values of the monthly biomasses of phytoplankton and zooplankton made it possible to assess the difference between the use of actual and literary data. According to actual data, the damage from the death of phytoplankton is 4.5 times lower, and of zooplankton – 97 times lower, compared with the results of calculations using literature data.