Paper presents the results of the experimental investigations of the pulp and paper industry’ wood waste processing method into high-quality synthesis gas. The main characteristics of feedstock (moisture and ash content, elemental composition, higher and lower heating values, volatile matter and fixed carbon content) and synthesis gas (yield, chemical composition, heating value and tar content) in dependence of the processing parameters are described. Processing is carried out by the two-stage pyrolytic conversion method, combining pyrolysis and subsequent high-temperature cracking of volatiles in the charcoal fixed bed. The principal scheme and results of the thermotechnical characteristics calculation of the pilot plant capacity of 300 kg/h of raw material (mechanical mixture of wood chips and bark with a moisture content of 48 %) are presented. The obtained results confirm the high efficiency of the method as applied to the processing of this type of waste.

In work processes of sewage treatment of galvanic productions with use of mainly floatation technologies are considered. For check of the developed technology solutions pilot studies of several versions of technological schemes have been conducted. The offered way includes twolevel reagent processing with the subsequent upholding and flotation. Tertiary treatment of sewage is consistently carried out in the filter with a sorbent the AC, and then in the filter with coal loading. The Zakyuchitelny stage of processing of sewage is adjustment рН to neutral value.

A system for automated monitoring of temperature and air pollution in a waste pipe is provided for remote monitoring of the state of the recovered household waste dump, which allows real-time monitoring of the state of the facility and timely eliminating sources of environmental pollution and measuring the concentration of harmful substances near social facilities. The developed system is aimed at solving the following tasks: collection, processing and storage of information from control sensors, environmental analysis of information, development of management decisions to prevent negative consequences in case of increasing concentration of landfill gas or a fire in the body of the landfill.

The issues related to the implementation of the process of depolymerizing of waste polymers, initiated by thermal action of an intense electromagnetic microwave field, are considered. The reactions considered are distinguished by the possibility of reducing the initial monomers or oligomers. The required reaction temperatures are achieved by indirect heating due to the presence of carbon thermal converters in the mixture or the use of liquid reagents characterized by high microwave losses. The results of the study of two different mechanisms of depolymerizing, namely the decomposition of the polymer in a glycol medium and thermal decomposition, are shown. The methods of mathematical modeling of the joint problem of electrodynamics and heat conduction are analyzed to estimate the temperature regimes of the processes of thermal decomposition of polymers. Experimental studies are illustrated by examples of the depolymerizing of polyethylene terephthalate, polystyrene and polymethyl methacrylate, the destruction products of which were esters of terephthalic acid, styrene and methyl methacrylate.

The review of foreign studies devoted to the utilization of polymeric composite materials (PCM) by the solvolysis method is presented. It has been established on the basis of this that two groups of technologies predominate: directed to fiber extraction by destruction of the organic matrix and based on partial destruction of individual bonds while preserving valuable matrix components. The results of experimental studies on the selection of reagents for the recovery of carbon fiber from phenol formaldehyde PCM are presented. The characteristics of the change in the properties of the secondary fiber on the basis of a visual assessment are given, showing the appearance of roughness and irregularities in the fiber swirl and a significant decrease in their thickness. The results of research on fine-dispersed reinforcement of concrete with secondary carbon fiber, which showed an increase in flexural strength by 3–8 %, are described. The problem of dispersion of secondary carbon fiber during its introduction into concrete is considered.

The issues of increasing the nutritional value of waste alcohol, brewing and wine industry by cultivating an assimilating ethanol and the strain of mycophilic fungus Hypomyces odoratus VKPM F-242, which produces a complex of hydrolytic enzymes, are considered. The data obtained may be of practical interest for the disposal of wastes from the fermentation industry with obtaining amino acid-rich and environmentally friendly feed additives for livestock.

The model of ecological rationing of oil-polluted soils is substantiated according to the function of providing the soil with conditions for biological activity according to separate biological indicators sensitive to oil products, in particular, catalase activity and survival of pot worms. Petroleum products were rationed in different types of soils of the Sakhalin region: high-moor peat bog; humus podzolic surface-glue; alluvial meadow acidic; brown forest acid podzolic in model series with different levels of pollution. The establishment of a standard value at which the functioning of the studied soils changes, was carried out according to the criterion of changing the values of selected biological parameters corresponding to the change in the rate of soil functioning with increasing oil concentration according to the dose-effect model. For the standard of soil quality for petroleum products in the regions of oil production, the value of petroleum products was used, leading to a significant deviation of the values of biological indicators from background values determined by the same biological indicators. For the permissible residual content of oil products in soils, in which the soil maintains stable functioning, performs environmental functions, a 30% change in the functioning of the soil from the background analogue according to the studied biological indicators was taken. Calculations on the rationing of oil content in soils can be performed using the non-linear regression model described by the logistic curve.

It is shown that the mechanical remediation of oil-contaminated soil is carried out quickly and radically, and the cost of this method (from 3.8 to 62.4 million rubles/ha) is several times higher than the cost of bioremediation. Soil cleaning by in situ bioremediation can last from 1 to 3 growing seasons, but it does not require the transportation and disposal of hazardous waste and does not destroy the soil cover. Adding sorbents and ameliorants for bioremediation of oil-contaminated soils is often justified, since it significantly expands the capabilities of the method, although it increases the cost of cleaning from 1.0–4.3 to 1.1–18.3 million rubles/ha, depending on the type and dose sorbent.

The conducted researches show that depth of thawing of the seasonally thawing layer (STS) in the conditions of industrial development is influenced by a number of factors: existence of a vegetable cover, moisture content of a surface of the soil, familiarity of the territory. For preservation of natural borders of depth of thawing of STS and prevention of development of a water erosion on tundra lands of the Yenisei North with approach of positive temperatures it is necessary to observe a number of measures: the maximum aspiration to maintaining physical properties of the soil and the modes of a korneobitayemy layer of the tundra; minimizing operation of the caterpillar equipment, use of the special equipment with the facilitated weight (trekola); the ban on drives of the equipment on rekultivirovanny sites; accounting of the steepness of slopes at earthwork and construction of industrial facilities; precautionary measures in case of threat of emergence of prerequisites of a water erosion, timely holding remediation actions, etc.

The article is devoted to the analysis of the basic risks of the Russian Federation environmental policy. Unresolved problems of the environmental policy are considered and analyzed. The main reasons of insufficient scientific and methodological basis of this document, its structure, principles and priorities are investigated. An alternative view on the content of the strategy is substantiated, possible ways of quantitative strategy development based on scenario analysis and Decision Analysis scientific direction are considered in the article. An essential peculiarity of this strategy development approach is the assessment of the decision-making consequences in terms of costs, benefits and risks. This approach fully corresponds to the economy digitalization trend noted in the May presidential decree.

The dynamics of the content of mobile forms of heavy metals (Zn, Cu, Ni) in the soil cover of agricultural land located near the sources of negative anthropogenic impact are considered. These elements have a pronounced cumulative effect, which confirms their concentration during 2000–2017. In the agrocenosis conducted to identify soil microbiota and identified representatives of the genera Agrobacterium and Agrobacter. The revealed features of interaction in the system "soil-microorganisms-plant" allow us to consider one of the tools to increase the productivity of grain agricultural systems by regulating the composition of soil microbocenoses. It is necessary to maintain optimal plant intervals of zinc, copper and nickel concentrations as significant micronutrients. It’s actually for agrobiocenoses formed in the zone of influence of technical objects.

The concept of waste management is proposed, based on the assessment of the utilized potential of waste and on the determination of factors limiting the yield of the final product. An algorithm has been developed for elaboration of strategic decisions on the management of recyclable waste.

The article considers essential factors of improvement of the quality of life of the population related to the influence of environmental situation in the region. Discussion focuses on the nature and unique features of the impact of environmental indicators on social well-being, healthy lifestyle and life expectancy of individuals, as well as their welfare and satisfaction with life. Research method is based on data of a sociological survey conducted by the authors in 2017 in the Volgograd region. An important role in the study is assigned to ecological situation in the region and environmental features viewed as a component of the quality of life. Health problems, environmental pollution, low-quality food, increased number of waste dumps were identified as the most important environmental problems of the regions. The results showed a close connection between the environmental problems and the population quality of life.