An assessment of the technical and economic indicators of the reconstruction of operating sewage conduits and channels using polymer concrete blocks is given. A real example shows that the best option for the reconstruction of sewage channels and ensuring environmental safety is the reconstruction using lining with polymer concrete blocks (segments).

The work is devoted to the development of an assessment of existing methods of utilization of lithium chemical current sources. Modern types of lithium-ion current sources are analyzed. It is shown that the cathode and electrolyte materials are most valuable for the process of separating commercial lithium. A modern technological disposal scheme is proposed, where mechanical activation processes are used using ball mills and baromembrane technologies (ultrafiltration and reverse osmosis). The results of experimental studies on the pilot plant.

The paper considers the issues of effective protection of the environment, which is under intensive technological impact by creating an artificial ecological system along the path of pollutant flow, as well as issues of utilization of this ecological system with subsequent extraction of useful raw materials. This work is relevant for countries with a developed mining and metallurgical and industrial complex, as well as for the development of the "green economy" of these countries.

The ways of processing large-tonnage coal mining waste – oxidized coal into technical and agricultural products – are presented based on the rational and efficient use of some modified physico-chemical properties of original coal materials. Studied ways of rational use of oxidized coal in agriculture, based on effective use of coal derived humic acids: as an additive of its crushed fractions on the fields for growing grain and tuberous plants, as well as for the production of humic preparations (fertilizes, biological active additives based on humic acids for arable farming and animal husbandry). Proposed new methods of reclamation of disturbed lands with the help of microbiological destructors of oxidized coal.

The studies on water softening using sorbents based on modified sunflower husk and buckwheat are given. It is shown that these crop wastes can be raw materials for sorption materials for softening groundwater. The sorption capacity of the materials obtained under static and dynamic conditions for hardness salts was studied, a regeneration solution was selected, regeneration was carried out. The time of the protective action of the filter and the achievement of its full dynamic capacity by the method of GOST and the author's method are determined.

The problem of recovery of highly toxic, corrosive sludge oil refining waste based on formalin-containing reagents is considered. Based on the results of laboratory studies, promising areas for the recovery of this type of sludge as bioinhibitors of the decomposition of solid municipal waste in conditions of landfills with minimal environmental impact on ecosystem components are proposed.

It is proposed to use a sorbent based on polyurethane foam and natural raw material chitosan for water purification from oil pollution. Traditionally, chitosan and materials with its use are mainly used as purifiers of water and other media from heavy metal ions. This paper provides information on the use of chitosan, which is preliminary isolated from the waste from processing f various beetles, dead bees, etc. Sorbent synthesis occurs by mixing the components of polyurethane foam and chitosan in a very short time, which allows you to produce and use it directly on site.

The results of the analysis of melt water (94 samples), taken on the territory of the city of Tyumen, are discussed. The patterns of distribution of the water-soluble (most toxic) form of copper in the city are established. The information obtained, presented in the form of maps, allowed us to identify areas with varying degrees of load on this indicator. A method for estimating background concentrations is proposed, since previously proposed method in modern conditions was not applicable.

A method for analyzing the stability of the chemical composition of wastewater in the manufacture of printed circuit boards using statistical methods of process control is proposed. The correlation and normal distribution of the monitored indicators is evaluated. Types of control charts are selected that provide control of both the average level of the process and its dispersion. To control the stability of independent indicators, Shewhart charts are used. Monitoring of correlated indicators is carried out using the Hotelling control chart. If it is necessary to control the multidimensional dispersion of the process, generalized variance charts can be used. The proposed approach ensures the detection of process violations before the monitored indicators are out of tolerance.

On the example of various approaches to waste recovery and recycling of garbage existing in different countries, the role of ecological culture in solving environmental problems is analyzed. Based on the analysis of problems associated with landfills, features of the Russian environmental consciousness are presented. The importance of the transition from the widespread burial of waste to their treatment and disposal on the basis of resource-saving technologies that are effectively used in the global economy is emphasized.

Complex chemical-analytical and microbiological studies of the state of water, soil grounds and bottom sediment of the industrial zone of city of Khabarovsk were carried out. It was found that petroleum prodacts are the main environmental pollutant of the study area. The impact of runoff from the industrial zone on the quality of water and bottom sediments of the Amur river is manifested in an increase in their content and number of indicator groups of bacteria in the zone of impact of the small river Kurcha-Murcha draining the territory of the industrial zone. The oil content in the Kurcha-Murcha river at the exit from conduit is 20 MPC. The degree of soil contamination varies from “increased-background” to “strong”. The amount of oil products in the bottom sediments of the Kurcha-Murcha and the Amur river (below the mouth of the Kurcha-Murcha river) is defined as "dangerous" and "strong", respectively.

As a result, the study using the method of x-ray fluorescence analysis with synchrotron radiation (SRX RF), for the first time obtained reliable data on the content of 20 elements in the above-ground (leaves) and underground (rhizome) plant organs Hemerocallis hybrida (sort Regal Air) growing in an urban environment in the Novosibirsk oblast. It is shown that the maximum concentration of most elements falls on the organs of plants that live in a man-made environment. The high content of heavy metals – lead, zinc, iron, manganese, copper – in the leaves was noted. The increased concentration of chemical elements in the organs of plants Hemerocallis hybrida, which suggests that they are bioindicators of the ecological state of industrial transport zones.

The analysis of domestic and foreign sources on the methodology of construction and use of integral indices of quality of the urban environment and sustainable urban development was carried out. It is shown that these indices can be represented as urban-ecological in a broad sense. A method developed by the authors for the formation of a dynamic quality index of the urban environment, which allows the dynamics of the index and its components to evaluate both the quality of the urban environment and the direction of its change, is presented. Using the example of Kirov, the environmental characteristics of the urban environment, taken into account when calculating the index, and the problems of their measurement and presentation are described in detail. The prospects of the developed methodology for solving problems of urban ecological development are shown.