A new technological scheme of water treatment is proposed, combining reagent methods with hydrodynamic activation of coagulation, flocculation and sorption processes, with baromembrane methods of purification. A method of organizing the process of filtering water after treatment with reagents using a tangential filter made using self-propagating high-temperature synthesis technology is proposed. Jet agitators – ejectors were developed and investigated, the efficiency of using ejectors as devices for dosing and mixing of reagents with treated water was shown. An experimental model of the installation was created and it was successfully tested on model as well as real polluted waters. Purified water obtained on an experimental sample of the installation fully complies with the hygienic requirements and standards established for drinking water.

One of the most promising areas for the use of waste production is ─ involving them recycled as raw materials for the production of ceramic bricks. The use of waste fuel and energy complex (inter-shale clay) and chemical wastes (alumosilicate sludge) in the production of ceramic bricks promotes recycling of industrial waste, environment, expansion of raw materials base for production of ceramic building materials. Developed innovative proposals for reducing negative impacts of toxic waste processing on environmental objects, which novelty is confirmed by Patents of the Russian Federation.

Aluminum-, iron- and titanium-containing metal-organic frameworks based on terephthalic acid was prepared and was characterized using BET, XRD, TGA and FT-IR techniques. Sorption of food dyes Indigo carmine, Tartrazine and Ponceau 4R with synthesized metal-organic frameworks was investigated in wide range of pH. It was established that the sorption of all dyes is better in acid media. It is found that the used metal-organic frameworks can be easily recycled at least five times, via ethanol washing. Metal-organic frameworks can be used as effective and easy regenerable sorbents for wastewater treatment from organic dyes of food industry.

The research of a spent kieselgur obtained during beer filtration as a sorbent for cleaning of waste waters from oil. The thermal processing of a spent kieselgur influences over its ability to remove oil in the process of cleaning of waste waters. It has been discovered that the highest degree of removing oil from standardized test solutions of waste waters is provided by a spent kieselgur modified at a temperature of 400 °C. Modifying a spent kieselgur with sulphuric, hydrochloric and phosphoric acids at different temperatures increases its sorption properties in relation to oil. The maximum removal of oil from standardized test solutions of waste waters is achieved by using a spent kieselgur modified with 20 % sulphuric acid at 100 °С for cleaning them. Using a modified spent kieselgur allows increasing the degree of cleaning of waste waters contaminated with oil.

The method of obtaining new sorbents on a natural carrier is described. It is shown that surface modification of granulated green earth with iron-potassium ferrocyanide and iron hydroxide compounds allows synthesizing materials with higher specificity and sorption capacity with respect to cesium and strontium radionuclides, respectively. The resulting sorbents are suitable for water treatment in both static and dynamic modes. The maintaining of good hydrodynamic characteristics after conducting experiments under dynamic conditions confirms the possibility of using them as filter loading in water purification and water treatment. Radionuclide-saturated sorbents can be considered as reliable matrices for immobilizing radionuclides. The promising areas for the use of modified green earth are the treatment of radionuclide-contaminated drinking water and the rehabilitation of natural water bodies in radioactively contaminated areas.

The content of polycyclic aromatic hydrocarbons (PAHs) in Betula nana L. was studied in the background area and at different distances from the coal mining enterprise. A close correlation was found between the content of polyarenes in coal, snow cover and plants. It was established that the content of PAHs in plants in polluted areas exceeds background values by 2 times and slightly decreases with distance from the mine. The largest multiples of exceedances are noted for heavy polyarenes. The contribution of surface contamination to the total PAH content in the plant was about 20 %. The distribution of PAHs in the organs of Betula nаna is uneven: light PAHs actively penetrated the leaves and branches of Betula nаna in the range of up to 1 km from the mine; In the stems of birch PAH penetrated in small quantities. Betula nana can be used as an indicator species characterizing the degree of pollution of the territory of the PAH coal industry enterprises. When assessing short-term contamination, plant leaves can be used, for analysis of long-term exposure – the bark of Betula nana.

A brief analysis of the thermal networks in the Russian Federation with evidence of upgrading necessity of the existing pipeline system is presented. A comparison of the various existing and promising materials of pipelines and thermal insulation from the point of view of their thermal-hydraulic characteristics are presented. It’s estimated an economic effect for the reduction of thermal and hydraulic losses in the comparison of composite and metal piping length of 1000 meters. It is shown that the optimum thickness of thermal insulation composite piping can be taken smaller than for the metal tube 4-5 mm.

The possibility of using sewage sludge (WWS) as an organic fertilizer has been studied. The Sludge is formed after the wastewater treatment of the meat industry production with actinomycetes Str. chromogenes s.g. 0832. This microorganism is adapted to specific protein contamination of wastewater. The sludge is characterized by a high content of organic matter (57.3-62.5%). Free amino acids make up 70% of the total protein. The share of essential amino acids in WWS accounts for 41.44%. Of the heavy metals, only Zn and Cu were detected in it. At the same time, Zn content is 7.9 times lower than permissible, Cu - 3.8 times. WWS is not toxic in doses applied to the soil. Marked a significant increase in the biomass of spring rapeseed on all experimental samples. The highest yield increase of 187.6% is observed at the dose of WWS 10t/ha. Evaluation of rapeseed seed products showed a high increase of seeds on soils with addition.

The optimal parameters of catalytic purification of flue gases from SO2 and CO2 in trifluoroacetic acid solutions are determined. It is shown that flue gas cleaning from carbon dioxide and sulfur dioxide using trifluoroacetic acid solutions as a catalyst is carried out at room temperature and atmospheric pressure with an efficiency of 100%. The process of gas purification from sulfur dioxide and carbon dioxide is carried out in a non-aggressive medium of trifluoroacetic acid (TFA) solutions. The possibility of increasing the absorption capacity of the reaction medium by pumping the exhaust gases through trifluoroacetic acid solutions has been established. At the same time, polluting waste gases — toxic sulfur and carbon oxides — are converted into higher oligomers (oxides), and then, as a result of their interaction with water, present directly in the reaction medium — TFA aqueous solution, into the corresponding acids. The formation of trifluoroacetic acid esters to a lesser extent leads to an increase in the absorptivity of the reaction medium, a reduction in the number of regeneration stages, a simplified separation of by-products, and, consequently, a simplification of their utilization process due to the absence of the need to purify the latter from these esters.

The sorption characteristics of aluminosilicate microspheres of fly ash from thermal power plants with respect to heavy metal ions were studied with a view to their subsequent use for integrated treatment of household and industrial wastewater. The mechanism and kinetics of the sorption of total iron ions from aqueous solutions are studied, quantitative characteristics of the sorption capacity and adsorption equilibrium constants are obtained. It has been established that aluminosilicate microspheres of fly ash possess sorption properties with respect to common iron ions. The sorption isotherm of iron ions from water by the material under study is characteristic of microporous sorbents. The quantitative characteristics of the sorption process allow us to conclude about the possibility of using aluminosilicate fly ash microspheres without any additional treatment for the purification of waste water from heavy metal ions.

The ecological condition of the soil cover of technologically disturbed areas was studied. It has been established that the general soil-ecological state of the plots with agricultural re-cultivation and self-restoration is characterized, as a good one, with the forest re-cultivation — as satisfactory. Communities of carabid beetles at the dumps of the forest-steppe zone of Siberia are formed according to the meadow type. In the surveyed dumps, in 30 years, the carabid beetles communities are gradually restored, but not in full strength. In the area with forest remediation, forest species begin to be settled, however, representatives of the meadow cenosis are also preserved. From this it follows that the forest direction of remediation requires more time to restore the population of carabid beetles, corresponding to the established biocenosis.

At present, in Russia, the main way to handle the snow falling on the territory of urban development is its storage at snow polygons. It is shown that the arrangement of snow polygons on unprepared sites increases the risks of the development of dangerous exogenous geological processes, including, may lead to flooding of urban areas and infrastructure. The Russian and foreign experience in handling waste from street winter cleaning is considered. The analysis of the existing Russian regulatory framework in the field of placement of snow. The negative consequences arising from the operation of snow polygons are considered.

The results of studying the effect of the growth stimulants Verva and Verva-El on the growth qualities of pine ordinary seedlings grown under the pre-sowing soil preparation using the roundup (glyphosate) herbicide are presented. The necessity of the presented experiments is connected with the establishment of the impact of the joint effect of new growth-promoting drugs and pesticides traditionally used in forestry on woody plants. It was shown that under laboratory conditions, the simultaneous presence of the roundup herbicide in the growth medium (agaragar) and seed treatment with the growth stimulants Verva and Verva-El leads to an inhibition of the growth of two-week-old pine seedlings, due to a decrease in the size of the roots. In the small-plot field experiment, an increase in the stem height was found in the variants using stimulants relative to this indicator in the variant where the pine was grown only with the use of roundup.