The article presents the results of researches of zeolite modification in order to create sorbents for wastewater treatment from heavy metal ions. Zeolitive tuffs of deposit of the Zabaikalye Territory are considered as raw materials. It is proposed to modify zeolites with highly organosilicon compounds hexamethyldisilazane [(CH₃)₃Si]₂NH and tetraethoxysilane (С2H5O)4Si, which leads to hydrophobization of the surface and an increase in adsorption capacity. A method for modifying the structure of natural zeolite with a sulfur-containing polymer obtained from waste products of epichlorohydrin, the main component of which is 1,2,3-trichloropropane, is described in more detail. A sulfur-containing polymer network is formed by using sulfur dissolution at room temperature in the monoethanolamine – hydrazine hydrate system and condensation with 1,2,3-trichloropropane. The result of applying a sulfur-containing polymer network is not only hydrophobization of the zeolite surface, but also the appearance of sulfur atoms in its composition, which increases the selectivity to heavy metal ions. Based on the obtained experimental data, the method of improvement the existing technologies for wastewater treatment at enterprises (railway transport) by introducing a deep post-treatment into the sorption unit scheme is proposed.

A study of the possibility of using Electrodialysis for the simultaneous separation of multicomponent solution of deactivated vat residues of the ion-selective cleaning plant (ISCP) NPP for three chemical reagents is presented. A prototype of chemical component recycling plant with a capacity of 5 liters per hour was designed and built. Studies have been carried out confirming the possibility of obtaining acid and alkali from deactivated vat residues (VR) of NPP using Electrodialysis. It is proposed use results of work when developing a compact pilot plant for processing of deactivated vat residues of NPP with WWER. The use of Electrodialysis to separate of multicomponent deactivated solution VR ISCP NPP allow effectively remove boron components for reuse.

The possibilities of obtaining porous fillers based on carbonate sludge and liquid-glass composition are considered. One of the issues of industrial waste disposal is the creation of waste-free technologies. The use of nanotechnology-based carbonate sludge in the production of porous aggregates increases environmental safety. A porous aggregate with high physical and mechanical properties was obtained. The use of carbonate sludge in the production of porous aggregate contributes to: a) recycling of industrial waste; b) environmental protection; C) expanding the raw material base for obtaining ceramic materials for construction. A patent of the Russian Federation was obtained for the obtained method of producing a porous aggregate using a liquid-glass composition.

The results of studies of the sorption of EDTA complexes with ions Co(II) and Fe(III) on anion exchange resin AB-17-8 used in mixed filters of special water treatment apparatus of NPP are presented. The character of the sorption process of complexes Co(II)-EDTA and Fe(III)-EDTA in acidic media depending on the pH and salt background of solutions simulating deactivating solutions formed after the dissolution of iron oxide compounds containing cobalt radionuclides was studied. It has been shown that upon deactivation of spent ion-exchanged resins with acid solutions of EDTA salts, the secondary sorption of EDTA complexes with cobalt radionuclides on anion exchange resin can be reduced by lowering the pH of the deactivating solutions and increasing the concentration of competing inorganic anions, with no noticeable competing effects of the complexes Fe(III)-EDTA.

The article considers the possibility of reduction of anthropogenic impact on ecosystems of various levels of waste of mining complex by their largetonnage direct using in the construction industry. The methods of utilization of waste crushed production modified with natural zeolites and stabilizing additive in the composition of soil concrete are studied. The chemical and phase compositions of the inital mineral raw materials and soil concrete based on them are studied by a complex of modern methods. Optimal mass fractions of clinoptilolite rock (5–15 wt. %) and a polymeric stabilizing additive (1 wt. %) allowing to obtain composites with a maximum strength grade of 100 (М 100) are established. The increase of strength characteristics of soil concrete modified with zeolite-containing rock is associated with an increase of their density by the presence of crystalline calcium and magnesium silicates in the structure as well as the filling of the interparticle space with mineral and polymer additives.

New methods is described for assessing the resistance of packaging and other materials to destruction caused by the action of various factors (such as mechanical stress, moisture, and the vital activity of microorganisms etc.). This method include comparing the strength of samples of the studied materials (SSM), determined before and after 9-day incubation of SSM in liquid nutrient medium (NM) with and without test microorganisms (TM) by day-to-day replacement of 40 vol. % NM on steril medium. Resistance to various types of degradation of a number of new polymer materials based on polyvinyl chloride (PVC) with the addition of 0 to 30 mass. % starch, pectin, polyhydroxybutyrate and bentonite was investigated by the method described. The effect of SSM on the growth and metabolic activity in liquid NM of Lactobacillus acidophilus was also studied (according to the dynamics of changes in the elastic light scattering intensity, pH, and electrical conductivity of NM during the first 9 hours of its incubation in the presence of SSM and TM). As a result, it was shown that if it is necessary to increase the overall degradability of such materials (including biodegradability), it is better to use from 5 to 10 mass. % starch as additives to their PVC base. If it is necessary to increase the biodegradability of such materials, it is better to use from 5 to 10 mass. % polyhydroxybutyrate as additives to their PVC base. Аnd if it is necessary to increase the biostability of constructed PVC-materials, it is better to use from 5 to 15 mass .% bentonite as additives to their PVC base.

A method of disposal of landfill leachate based on lithification – changing the state of aggregation of a liquid into a solid product without using cement as a binder is presented. The resulting solid product is analyzed for the content of gross and mobile forms of heavy metals. X-ray phase analysis was carried out to identify crystalline phases formed in a new product. The IR-spectra of the lithificate were recorded in the range of 500 to 5000 cm-1. The surface of the samples was studied using a scanning electron microscope. Several options for the use of the lithificate obtained by stabilizing the leachate of the MSW landfill using chemical reagents.

The shell of the Soil database was developed on the basis of the 1C: Enterprise 8.2 software. Designed to combine information and systematize field research data, indicating on the interactive map the points of laying sections and soil sampling. The subsystem “Soil data” includes the subsections: “Sampling locations”, “Soil pollution”, “Physicochemical properties” and “Phytotoxicity”. All of them are presented in the form of hyperlinks to selected points on the city map. The database is constantly updated according to the results of research conducted at the Pacific National University. Information is the basis for the adoption of environmentally oriented management decisions on the development of the urban environment and environmental monitoring. Used in the educational process in the preparation of bachelors, undergraduates and graduate students.

The results of studies of three sites of agrocenoses are presented: wheat (seed cereals), soybeans (legumes) and legume-cereal (rumpgoatskin) perennial grass mixtures to identify the peculiarities of the transition of stable and radioactive pollutants (including substances of hazard classes 1 and 2 and ¹³⁷Cs) in the system "agro-chernozems – agricultural plants" with soil testing and quality control of aerial and underground plant phytomass. In this radioactively contaminated area, the elemental composition of wheat, soybean, rump and goatskin does not differ from the composition of the corresponding species in the background. Legumes have an increased need for alkaline earth metals (Ca, Mg, Sr) and also contain more Ni and Mn, cereals – in Si. Within the studied part of Plavsky radioactive spot, the quality of agricultural products meets the relevant standards for the content of heavy metals and ¹³⁷Cs.

A comprehensive assessment of the degree of degradation of light gray forest soils and their environmental sustainability to natural processes and regimes, anthropogenic stresses occurring in the soil profile is presented. Toxicological study shown soil conditions in the areas of technogenic impact of dump slag of industrial aluminum casting waste in the Oryol region. Studies of the impact of slag dumps on the environment, in particular the effect on soil, water and vegetation cover, are given.

The article discusses the consequences of the development of the economy, processes and services, expressed in a sharp increase in the number of operating electronic equipment, which directly leads to an increase in the generated volumes of waste electrical and electronic equipment (WEEE) and the problems of their disposal. Various types of electronic equipment containing substances that constitute a serious threat to the ecology and human health, especially with improper disposal, are analyzed. The existing foreign and domestic experience in the field of electronic waste disposal is considered. The system of recycling electronic waste adopted in the EU countries and regulatory documents operating abroad and in the Russian Federation was studied. Practical recommendations are proposed for creating a real WEEE management system taking into account the actual situation in Russia and world experience in this area.

The experience of disturbed lands forest reclamation on mountain slopes near copper-melting (works) has been analysed in the paper. It has been established experimentally that reclamation could be carried out by the method of slope terracing and creating cultures of hanging birch (Betula pendula Roth.) and scotch pine (Pinus sylvestris L.) on the terraces. Forest reclamation effectiveness can be increased by applying a soil layer or a sewage sludge on the terrace surface as well as by Russian broom sowing (Chamalcytisus ruthenicus (Fisch. Et Woloszcz) Klaskova), seabuckthorn (Hippophaл rhamnoides L.) and honeysuckle (Lonicera caerulea L.).