The issues of extraction of complex organic substances from wastewater using physico-chemical methods of coagulation, flotation, adsorption. At the same time, flotation combines of the KBS type are used at the flotation stage, which make it possible to effectively treat wastewater from suspended pollutants and complex organic substances. At the stage of sorption treatment, a deep extraction of complex organic substances occurs up to trace amounts, which allows to achieve the normative quality of water treatment with the possibility of discharge into an open reservoir.

The effect of a stepwise increase in the load of organic matter on methanogenesis in the continuous process of anaerobic bioconversion of biomass, carried out in an anaerobic bioreactor of the first generation, is studied. Pretreatment of the initial substrate in the vortex layer apparatus under laboratory conditions led to a 14 % increase in the specific biogas yield during the continuous process of anaerobic bioconversion of organic matter as compared to the untreated initial substrate with the same load on the organic matter. It was found that with a load of organic matter equal to 6.4 kg of ODM/m³·day, the maximum specific biogas yield was ensured, and at a load of 12.8 kg of ODM/m³·day, the maximum degree of decomposition of organic matter was achieved. It was shown that preliminary processing of the initial substrate increases the resistance of the anaerobic bioreactor to overloads in organic matter.

It has been shown that in the electrolysis production of RUSAL Bratsk OJSC in recent years significant technological changes have occurred: the electrolyzers are switched to “the dry” anode technology, the current strength is increased, and the chemical composition of the petroleum coke used in the production of the anode mass has changed. The above facts led to a change in the chemical and physical composition of the exhaust gas, as well as to a change in the volume of their formation, which forced the modernization of the evacuation system of the exhaust electrolysis gases by changing the design of the burner devices.

The study results of complex technology for arsenic extraction from dumps, which consist of such process steps as sludge soda roasting, water leaching and precipitation of arsenic sulfide from the solution are presented. The testing on unit of waste hydrochemical recycling is conducted. The technological cheme for recycling Tuvacobalt combine was proposed. The results showed that under optimal calcination and leaching conditions the arsenic content decreases from 3 wt.% in the starting material to 0.3 wt.% in the cake, and the degree of arsenic extraction into the solution rises to 92 %. According to the developed technology, products were obtained: arsenic sulfide, silicon dioxide and leaching cake.

The results of the study of the water-chemical and microbiological regime of operation of the cooling water recycling systems of TPP-25 and TPP-26 are presented. According to the results of the microbiological analysis of the additional and circulating water, the sources of microorganisms entering into its composition are classified and identified, the previously unknown function of the technology for deep water softening in an alkaline medium is established, which is proposed to be used to remove sediment-forming components from additional water. It is shown that for the fight against microorganisms immobilized on the inner surfaces of pipelines transporting circulating water and in turbine condensers, a biocidal treatment of circulating water is required. The results of the entire range of studies form the basis of the technology that allows to prevent precipitation of any nature on the heat transfer surfaces of turbine condensers.

The "Ecological and energy criterion for the effectiveness of the introduction of BAT" is proposed. This indicator expresses the ratio of the unit cost of the consumption of fuel and energy resources to the difference in the values of nitrogen emissions in the base technology and the compared technology. The option of using this coefficient is considered on the example of comparing poultry manure disposal technologies. The environmental and energy criterion for the effectiveness of the introduction of BAT will be useful for evaluating technologies at the same time both in terms of energy and environmental indicators.

A method has been developed for the operational determination of the strength of industrial emissions of a pollutant by an APS without direct measurements of concentrations and parameters in it, which relates to industrial ecology and can be used in the state environmental control or monitoring system to increase its effectiveness and responsiveness. The essence of the method is to use the information provided by public authorities. An information base is being created for all organized APS located in the observed urbanized area, which contains information about the sources of pollutant emissions and their characteristics; establishes the fact of unauthorized pollutant release by detecting elevated concentrations of various pollutants in the observed area according to the results of quantitative chemical analysis of atmospheric air samples and determines their ratio; the inverse dispersion problem is solved and the area of the location of sources of unauthorized pollutant emissions is identified, the source of unauthorized pollutant emissions is determined, and then the strength of this pollutant emission is estimated (Mi, g/s).

The possibility of neutralizing galvanic effluents containing hexavalent chromium ions and associated metal ions using the ATM-1 sorbent, together with the use of secondary carbon fibers, is considered. The experimental results showed that the ATM-1 sorbent together with a carbon filter provide effective neutralization of GHP effluents.

The paper presents the analysis of the information collected during visits to European MSW processing facilities in the last two decades. Having considered this data, official statistics and data of technical reports of environmental and industrial associations, the authors have done the analysis of the developments of MSW treatment technologies and of the industry in general. There have been discussed traditional and alternative approaches to waste processing. Furthermore, there have been proposed recommendations on the possibility of application of different technologies to Russian Federation.

In this article, the authors assessed the sustainability of environmental components when placing drill cuttings on the basis of the research performed. A system of restrictions has been developed for road-building mixtures based on drill cuttings and parameters have been determined, the regulation of which will ensure the production of geo-environmentally sustainable products. Compression tests of slime-sand mixtures and slimesand mixtures of Polybond soils treated with an acid stabilizer within the framework of ensuring structural stability showed that using only sand as an input component, it is impossible to obtain products that meet the requirements for deformation indicators of soils used for earthen construction road canvases. At the same time using the acid soil stabilizer, you can get products with the required strength characteristics.

The possibilities of high and medium resolution optical satellite imagery to monitor and control of sewer discharges in the coastal zone of the Black Sea nearby the towns of Sevastopol and Balaklava are examined. Based on the results of the satellite image analysis, the locations of waste emissions in the waters adjacent to the Golubaya Bay (Sevastopol region) and Balaklava were identified, the areas of water pollution and their occurrence reasons in a narrow coastal zone were determined. It is shown that untreated sewer discharges can be unambiguously identified on images acquired from space, and in case of volley emissions, satellite imagery can quickly determine the real situation in the sea, control the dynamics of wastewater in the coastal zone and finally assess the risks of seashore pollution.

Monitoring data on gas-liquid chromatography (GCH) and chromato-mass spectrometric (HMS) qualitative and quantitative composition of organic pollutants in the snow cover of working zones and in the zones of influence of oil depots of the Republic are considered Sakha (Yakutia).However, the toxological activity of the snow cover of the working areas of the tank farms under study, determined by benzo(α)pyrene equivalent, is low and lies in the 2x10^-3 area. t has been established that the content of polyaromatic hydrocarbons (PAH) in the snow cover of the zone of influence of enterprises does not exceed 150 micrograms/m², the area of distribution of organic pollutants is directly related to the rose of winds in the area of the oil depot.