The problem of testing equipment designed for the treatment of surface wastewater contaminated with oil products is considered. The current level of development of installations for testing treatment equipment is shown. The possible methods of treatment of surface wastewater from oil products are highlighted, and the features of the treatment process depending on their phase state are described. The main requirements for the technical device and characteristics of the testing equipment for the treatment of surface wastewater contaminated with oil products are identified. The design of the developed full-size FOPS^® filter test bench is presented, the procedure for working on it is described, the results of studies on modeling the process of treatment surface runoff contaminated with emulsified and truly dissolved oil products are presented.

An approach is presented that allows to choose the facilities of geoengineering protection of accumulated environmental damage. This approach is based on taking into account the peculiarities of the hydrogeological, hydrological, geomorphological situation of territories where the objects are located, as well as their ranking depending on the environmental burden. A practical example of arrangement of a large storage of hazardous waste of the chemical industry is considered. Such protection with a perimeter waterproofing curtains combines the anti-filtration functions, bank protection and strengthening the bearing capacity of soils. For the first time, a curtain based on soil-cement piles was used as alternative to the well-known sheet pile technologies to protect the geological environment and watercourse during lateral filtration of contaminants of slurry body.

The first steps have been taken to study microplastics in the beach areas of the Arctic seas and the southern part of the Far East. Researches have shown that the average concentration in the areas studied is about 1 particle per kilogram of beach ground which is significantly lower than in other regions of the world. However due to the difficult access and irregular nature of the work an objective situation cannot be presented yet.

The research results are presented – chemical properties (evaluation of the detoxifying ability of silica sol), physical (determination of the required concentration of silicon dioxide), and physico-mechanical (strength tests of samples) – the properties of silicas. Transport construction technologies are proposed in which the use of a new binder allows achieving higher strength indicators of fortified structures, as well as ensuring the fulfillment of the geoecological function and recycling of roads by using silica sol.

A quantitative analysis is carried out of such factors as electrostatic intensity, surface area of particles, dielectric permittivity, size polymer particles, and the type and concentration of surfactants, by the amount of electric charge of the polymer surface, obtained in the electrostatic field after their pre-treatment of surfactants. Dependencies of the maximum charge of polymer waste particles from the basic technological parameters of the drum electrostatic separator and physical-chemical properties of polymers and surfactants are shown. It has been found that degradation of polymeric waste in a surfactants aqueous solutions is an effective preliminary step of technology of electrostatic separation of a mixture of crushed polymer wastes that positive effect on their charging in an electrostatic field. The obtained data allows to develop the technological process precision selective separation of mixed polymer materials in an electrostatic field.

The results of research of the sorption behavior of non-ferrous metal ions (Zn²⁺, Co²⁺, Cd²⁺ и Pb²⁺ ions ) on amorphous titanium phosphate, with TiO(OH)(H₂PO₄)₂·H₂O chemical composition are presented. According to the adsorption isotherms the maximum sorption capacity was found to be (mg/g): Co²⁺ –66.1; Zn²⁺ –73.5; Cd²⁺ –179.1; Pb²⁺ –403.6. Mesoporous structure of the sorbent provides the high sorption kinetics and uptake of studied ions occurs up to 15 min. The presents of strongly acid functional groups in the sorbent matrix governs its successful operation under acid conditions. Simulated and real sewage multicomponent solution were tested and shown that titanium phosphate is a promising material for toxic metal removal. The chemical composition of purified water meets the requirements of the MPC for natural water.

There are presented the results of physicochemical studies of the composition and thermal transformations og large-tonnage wastes of beneficiation of scarnified-magnetite ores from Kazakhstan. To determine the composition of materials and thermal transformations, the following methods were used: X-ray phase analysis, differential-thermal analysis, Mцssbauer and infrared spectroscopy. There was revealed the stepwise nature of the transformation of anthropogenic material during roasting, due to polymineral composition of ore beneficiation. It has been established that the chemical-mineral characteristics of natural silicates determine the formation processes and properties of clinker phases. An integrated approach to the study of technogenic raw materials allowed not only to substantiate the possibility and expedience of using scarnified-magnetite ore beneficiation wastes in cement production, but also to determine the preference for the phase composition of cement clinker. Research result from the basis for the development of low-energy cement clinkers with a high content of belite phase.

The main causes of drying out and loss of forest stands in the Irkutsk region are identified, the dynamics of losses of forest territories over a tenyear period from 2007 to 2017 is presented. It was revealed that the main causes affecting the state of forest plantations are fires, diseases of woody plants, in particular coniferous bacteriosis (bacterial dropsy of Siberian cedar pine (Pinus sibirica)) and dendrophage insects (Siberian cocoonworm (Dendrolimus superans Butler)). Suggestions have been made to improve the organization and conduct of forest protection and forestry activities.

A methodological approach to assessing the level of environmental safety of the water ecosystems of the Republic of Crimea is presented. Using the proposed methodology to assess the sustainability of the functioning of water ecosystems in the future will allow to rank river natural and technical systems on the level of environmental safety of their functioning, highlight the most vulnerable components of the water ecosystem and the main causes of increasing the likelihood of damage to both the water facility itself and its water users.

The article discusses The methodological aspects and presents the results of the assessment of territorial risks for socio-natural-technogenic (S-N-T) systems are discussed. In work have presented the calculations of individual and material risks emergencies in the Krasnoyarsk territory and the Republic of Sakha (Yakutia). The main techno-dangerous objects of territories are allocated and possible technogenic dangers with an assessment of the main indicators of pollution of natural environment are shown. As an example, the production associated with the production of petroleum products and minerals, reservoirs and tailings. Territorial technogenic risks of emergencies for the Krasnoyarsk territory and the Republic of Sakha (Yakutia) are analyzed.

The problems of pollution of agricultural land in the region have been considered, the main sources and types of pollution have been analyzed, legal, methodical and environmental documents on land reclamation have been studied. Activities on the reclamation of disturbed agricultural land are presented on the example of land-use facilities of natural monopolies in the Samara region.

The results of analysis of heave metals concentration in soil and subsoil of large urbanized area are presented. The dates of observation from 2014 to 2016 are presented. The 108 soil samples from 12 monitoring areas were analyzed. The distribution of mobile forms of heavy metals in the soil cover within Krasnoyarsk city are considered. The rate of soil pollution was studied. It was discovered soil pollution with Pb, Cu, Ni, Zn, Mn, Cd, Co exceeds maximum acceptable concentration (MAC). Geochemical associations of heavy metals for functional specialization areas were established. The indices of accumulation of heavy metals can be used to the monitoring to urban territories.