Noise pollution of the air is considered to be an excess of the natural level of the background noise or a sharp fluctuation and change in such sound characteristics as the frequency of the sound wave and the strength of the sound stream. The article considers noise levels in the mainline territories in a linear city.

Keywords: linear city, traffic noise, highways, air environment, landscaping, equivalent noise level, row of planting, arboretum composition

This article describes methods for measuring the characteristics of drinking water using microwave technologies, provides their comparative characteristics, advantages and disadvantages. The advantages of research by resonance methods are shown, the prospects for their application for further research are shown. Dielectric constant of substances, its influence on resonance.

Keywords: microwave technologies, resonant and non-resonant methods, water purification, drinking tests, dielectric constant

The paper analyzes the features of the spread of flare emissions from precisely identified sources of atmospheric emissions in the Irkutsk region using the trajectories of air mass transfer according to calculations using the HYSPLIT model and the "Fire Map" service from SCANEX. Estimates of the movement of flare emissions were made, the dominant directions of air mass transfer and their distribution in the regions of the Irkutsk region were noted. The impact of the natural and geographical features of the region on the spread of flare emissions was also assessed.

Keywords: HYSPLIT, flare emissions, PM2.5, PM10, atmospheric air pollution, black carbon, settled dust, Irkutsk region

The article analyzes the influence of an air cushion vehicle as a source of dust on the general and local picture of the dust situation in an industrial premises and assesses the significance of the increase in the concentration of dust particles in the dust and gas environment. A model for measuring the dustiness of the working area of industrial premises using a special set of high-frequency bandpass filters and a PC is proposed. Determination of dust content in industrial premises is carried out by the received spectrum of the acoustic signal, which is a "frequency portrait" of the concentration of dust particles in the dust and gas environment.

Keywords: industrial premises, transport vehicle, concentration of dust particles, measuring complex, ultrasonic signal, dustiness spectrogram

The reliability of assessing the amount of accumulated waste in the context of an imperfect scientific and methodological base for standardizing MSW, in the absence of generally accepted calculation methods, is not high enough. The possibility of using cluster analysis in the formation of a statistical sample of objects of a stationary trade network in setting standards for the accumulation of municipal solid waste is shown. A methodology for the formation of a representative statistical sample of objects of a stationary trading network has been developed when setting standards for the accumulation of solid municipal waste based on cluster analysis.

Keywords: waste accumulation, municipal solid waste, MSW generation standard, stationary trade network object, cluster analysis, representative sample

The problem of developing an optimal waste management system is very relevant in many countries. To solve it, it is necessary to study the processes of waste accumulation, to systematize the factors and conditions that affect the generation of waste, to determine the features of establishing waste accumulation standards for various objects. The article discusses the features of the accumulation of municipal solid waste and the establishment of standards for their accumulation for stationary objects of the distribution network.The volume and mass values ​​of daily indicators of accumulation of MSW from a trading area of ​​a certain type and the total value of accumulation indicators (over the entire trading area) are found. The formats of retail facilities with the maximum average daily indicators of MSW accumulation have been established. Standards for the accumulation of MSW for the category under consideration have been established for 1m2 of retail space with food products, 1m2 of retail space with non-food products.

Keywords: waste accumulation, municipal solid waste, MSW generation standard, stationary trade network object, volume indicator, mass indicators

The article discusses the process of applying a radio-absorbing coating to the surface of plastic. Vacuum plasma methods make it possible to effectively apply thin films to various surfaces. The main parameters affecting the quality and effectiveness of the properties of the applied coatings are considered.The result of the studied coatings obtained by the vacuum-plasma method showed that a sample coated with aluminum nitride, the transmission coefficient through which has not changed compared to the case of free space, is not shielding, and a sample coated with titanium metal, introducing additional attenuation of the order of 5 dB indicates the presence of absorption.

Keywords: electromagnetic radiation, thin films, application technology, radio-absorbing coating, radiation protection, magnetron.

An overview of methods for assessing the state of the environment is presented. The study of methods for assessing the state of the environment and the impact of production facilities is the most important factor contributing to reducing the negative impact on the environment. An example of a comprehensive assessment of atmospheric air in the Motovilikhinsky district of Perm using the Jobs-Decon software package is considered.

Keywords: ecology, environment, subject-oriented management, production facilities, assessment, Jobs-Decon, environmental pollution

The wastewater generated by the pulp and paper industry contains diverse contaminants such as organic substances, fine suspended powders, and dissolved solids. Currently, integrated treatment technologies are employed, utilizing thin-layer settling tank modules to eliminate solid contaminants. This study presents the outcomes of a comparative analysis of the efficacy of a conventional thin-layer module with flat plates and a modified thin-layer module consisting of two levels of plates, positioned in opposing directions, facilitating the rotation of water flow within the module. Through computer simulation techniques, it is demonstrated that the modified module design can enhance the cleaning efficiency by 8-30% for wastewater flow velocities ranging from 0.0025 to 0.0125 m/s. Additionally, particle trajectories and velocity fields were obtained, which clearly illustrate the direction of the dictating flow and circulation zones within the structure.

Keywords: Wastewater, pulp and paper industry, thin-layer module, module with rotation of water flow, computer simulation of particle deposition.

The stability of three-phase foams stabilized by particles and surfactants (surfactants) of various nature has been studied. The varying degree of hydrophobization of particles by short-chain surfactant hexylamine may be accompanied by a change in the properties of the dispersed system from high-strength and low-stability foams to structured low multiplicity. A decrease in the stability of foams stabilized by hydrophobized titanium oxide particles at a concentration of long-chain surfactant - cetylammonium bromide Cпав≥Сккм may be due to a decrease in the edge angle of wetting of solid particles.

Keywords: foams, solid particles, surfactants, stability

Experimental studies of the effect of the intensity of mixing of mineral coagulants with water on the efficiency of water treatment in different periods of the year have been carried out. The studies were conducted in June-August - low-turbidity water with relatively low color and high temperature; November-December - low-turbidity and low-color water with low temperature; flood in April-May - increased turbidity and color of water with low temperature and alkalinity. The results obtained allow us to evaluate the effectiveness of the use of concentrated coagulation, high-gradient mixing in water purification with mineral coagulants. The possibility of separate and joint use of mineral coagulants in different periods of the year was assessed.

Keywords: natural water, coagulant, concentrated coagulation, high gradient mixing, mixed coagulant, velocity gradient

In the article, the object of the study is the spread of pollutants from the sources of their release. During the calculations, the sources of atmospheric pollution were combined with the allocation of groups taking into account the height of the mouth of the emission source. To reduce time-consuming calculations using the method of combining sources of atmospheric pollution, the program has been created that provides fast processing of a large amount of information. A data bank on the main sources of pollution of the Rostov region has been compiled; systematization and reduction of these sources to a single coordinate system has been carried out. A trial estimation calculation of the regional transport of pollutants from the combined sources of emissions with the construction of maps of pollution isolines was made.

Keywords: harmful emissions, sources of pollution, the method of unification, data bank, maps of pollution isolines

The guarantee of ensuring the safety of people and material assets in the event of a fire requires a careful approach to the design and installation of smoke ventilation. In order to evacuate people from the smoke zone in a timely manner, technical devices with a normalized limit of resistance to fire are installed – smoke valves. To determine the distribution of the pressure of the air flow in the smoke control valve over its cross-sectional area, the method of mathematical modeling is used. With the help of a mathematical model, visual modeling of the distribution of the gas-air mixture flow is carried out, a detailed analysis of hazardous factors is carried out, an assessment of the possible temperature and time of flame propagation, determination of the probable degree of smoke in the interior space and the ways of smoke movement.

Keywords: smoke, fire, ventilation system, smoke protection, smoke valve, mathematical model

The article considers the problem of continuous monitoring of the concentration of dust flow in air ducts at enterprises in the production of building materials. A spectral-timbre methodology for estimating dust concentration based on the analysis of acoustic emission signals is proposed. Two stages of adaptation of the simplified assessment of dust concentration on the bench model and in production conditions were carried out. In the process of adaptation, a piezoceramic sensor is used, an acoustic signal from which using a preamplifier is fed to a recording device called potentiometer with a circular daily diagram . The reference weight method was used to measure the actual dust concentration and simultaneously record the readings of an adapting dust meter.

Keywords: building materials, dust concentration, dust measuring equipment, acoustic methodology, acoustic emission signals, Fourier spectrum

The article considers the possibilities of using a large fraction of coal industry enrichment waste in road construction. The use of waste rock as a large aggregate in the composition of road concrete is proposed, because the enrichment waste is not disposed of properly, but is sent to the tailings dump. These dumps occupy large areas of land, thereby causing damage to the environment. The fractional composition of coal waste from the enrichment of the Gukovo-Zverevsky coal-bearing area is analyzed. From the results of sieving, it was seen that the structural composition satisfies the size of the fractions of a large aggregate for the concrete mixture. Analytical studies of the composition of the concrete coating were carried out. Based on the analysis of the composition of the concrete mixture, we came to the conclusion that tailings waste can be used as a major substitute. A comparative characteristic of the requirements put forward for the resulting mixture is presented. In our work, one of the main qualities of the road concrete pavement was tested - strength. The results of experimental strength tests of control samples of concrete with various types of aggregate are presented. Based on the results obtained, it is possible to draw a positive conclusion about the possibility of using enrichment waste as a large aggregate of concrete mixture in road construction according to technical and economic criteria.

Keywords: road construction, concrete mix, enrichment waste, coal rock

The Sustainable Development Goals are becoming increasingly important indicators of the success of investment and construction projects. This is the result of the implementation of various planning and regulatory standards, especially in relation to sustainable development issues, which are currently used to control and monitor the construction process. Moreover, due to the need, construction participants also require its adoption as the main goal of investment and construction projects. In this regard, this article explains value management as a tool to ensure the sustainability of construction in the development and implementation of urban development projects. Various factors that need to be considered before starting a sustainable value management study are discussed.

Keywords: sustainable construction, sustainable development, sustainable cost management, environmental safety, urban development, construction management

This article is devoted to the study of the effect of photocatalytic oxidation together with successive layers of sorbents (shungite, celite) on the efficiency of cleaning the supply air of premises from pollutants of motor vehicles. The studies were carried out with the help of a developed supply ventilation valve with air purification.

Keywords: intensity of ultraviolet radiation, shungite, zeolite, titanium dioxide, adsorption limit, supply air, ventilation valve

The increase in the population of large cities leads to the need for residential buildings, office space, leisure facilities, etc. leads to an increase in new construction. The city cannot constantly develop in terms of space as it is limited by the territory allocated to it in the framework of the cadastral division of the territory and it cannot grow indefinitely in breadth. That is why there are various programs for urban development, such as renovation, redevelopment of industrial areas and reconstruction of existing buildings. Also in recent years it has become popular to use different environmental standards in the design and construction of new or reconstructed buildings. This article will focus on the redevelopment of industrial areas with the development of underground space from the perspective of Fitwel ecological standard.

Keywords: Fitwel, green standard, redevelopment, industrial areas, renovation, industrial buildings, industrial facilities, new construction, development of underground space, integrated development of the territory

The article considers the potential of atmospheric pollution by a combination of certain average annual values of microclimatic parameters and the range of their changes. Numerical methods for solving the turbulent diffusion equation are used in the construction of research models of various scales. An important place among them is occupied by methods of component-by-component splitting. With their help, it is possible to solve not only direct, but also inverse (conjugate) problems. The presented program allows calculating one-time concentrations of impurities under various meteorological conditions based on data on sources of impurity emissions and local conditions and provides for the possibility of constructing a topo-base of the settlement platform.

Keywords: microclimatic parameters, pollution, surface concentrations, topo bases of the settlement platform, methods of component-by-component splitting

The purpose of the full-scale investigations under the conditions of a pipe electric-welding production in operation was to obtain the necessary amount of actual data characterizing the features of the formation of aerosol emissions, their localization and treatment. During the investigation, the three main groups of factors were considered: the technological factors specifying the features of the technological process of pipe production, the technological conditions factors reflecting the power, frequency and composition of aerosol emissions, the operational aerodynamics of the ventilation systems for localization, removal and treatment of emissions.

Keywords: installations for plasma arc cutting and welding of pipes, gas-air mixture, dust particles size distribution, measuring section, dust density, concentrations of gaseous impurities

The increasing problem of the formation of ash dumps in the Rostov region dictates the need to search for environmentally friendly methods of waste disposal in the heat and power sector. In this article, the ash and slag waste of the Novocherkassk GRES is considered. We analyzed the chemical and fractional compositions of the ash-slag mixture formed at a coal-fired thermal power plant and proposed the use of ash waste with a size of 10-100 microns in road construction as a micro-filler. To study the strength of the road surface using ash microparticles, we manufactured and tested cubes of modified concrete mixture for compression using a press machine. The obtained result showed that the use of ash as a micro-filler in concrete does not affect its strength in any way. The tests of control samples with the use of ash wastes showed an improvement in the water resistance and frost resistance of concrete while maintaining its strength.

Keywords: ash and slag waste, micro-filler, concrete mix, road construction

The article discusses the selection and evaluation of energy-saving technologies for metallurgical production. Alternative energy sources are ordinary natural phenomena, inexhaustible resources that are produced naturally. Such energy is also called regenerative or "green". The article assessed the climatic characteristics, landscape, level of development of the territory of the location of the research object, analyzed the possibility of using solar and wind energy, hydropower, waste energy, low-potential energy using secondary energy resources. An engineering system based on the use of regenerative heat exchangers or economizers was proposed, which converts the heat of the exhaust gases from the electric steelmaking production into energy used for heating or hot water supply.

Keywords: metallurgical industry, electric steelmaking, alternative energy, energy saving, engineering systems, low-potential energy, secondary energy resources, heat of exhaust gases, regenerative heat exchangers, economizers

The radiation-temperature dependence for fresh water in the temperature range of 30-50 degrees Celsius is experimentally investigated. It is established that the radiation temperature of the water surface on the waves of the millimeter range is determined exclusively by the effective temperature of the skin layer.

Keywords: radiation temperature, skin layer, water, emissivity,radiation temperature, skin layer, water, emissivity, heat exchange, atmosphere, air

The problem of atmospheric air pollution in the regions is considered. Attention is paid to the development and implementation of automated air pollution control systems. The developed information and analytical system has a two-level system and consists of two subsystems: a city information system and a regional information system. The proposed software allows you to perform calculations of surface concentrations of pollutants with the formation of a data bank, as well as the construction of maps of pollution in the region and histograms of the distribution of the level of adverse effects of atmospheric pollution on humans.

Keywords: atmospheric air, pollution, monitoring, information and analytical system, maps of the pollution of the region

The dependence of the radio brightness temperature of water on the kinetic temperature in the temperature range of 50-90 degrees Celsius in the gigahertz frequency range has been experimentally investigated. It is established that the change in the radio brightness temperature of the water surface, depending on the kinetic temperature, is essentially nonlinear. The radiocontrast in the studied temperature range makes it possible to effectively detect thermal contrasts of the surfaces of hydro-objects.

Keywords: nonlinearity, kinetic temperature, radiation temperature, water, emissivity, radiocontrast, gigahertz range