The operational wear and service life of power equipment is closely related to the efficiency of the feedwater treatment plant. Insufficient degree of purification leads to serious violations not only of the operating mode of the equipment, but also contributes to an increase in the rate of corrosion processes. The paper considers a water treatment plant based on membrane technologies with the inclusion of membrane filtration and a reverse osmosis unit in a circulating mode. During the experimental period, water samples were taken at each stage of purification and the main indicators that affect operational wear were determined. Based on the results obtained, conclusions were made, as well as recommendations on the operation of the water treatment plant in a circulating mode.

Keywords: water treatment plant, membrane processes, operational wear of equipment, quality indicators of process waters

Enterprises of the fuel and energy sector, in search of new environmentally safe and economically feasible processes, are introducing membrane technologies into the water treatment system. The main advantages of these methods are: technological simplicity of design, minimal use of chemical reagents, absence of phase transitions and neutrality of wastewater. But despite the rather significant advantages, the use of these processes for a long time can be aggravated by seasonal changes in the quality of natural water in the water source. In this paper, an analysis of the reverse osmosis plant was carried out based on the results of laboratory experiments on water quality indicators at the inlet to the plant and permeate. The average results for each indicator for the entire time of the experiment are also presented.

Keywords: reverse osmosis plant, permeate, seasonal changes in the quality of natural water, thermal power plants

The capture and disposal of harmful emissions is an urgent task of our time. This article describes various methods of improving the environmental friendliness of industrial enterprises by cleaning flue gases. The most promising purification technology is adsorption. Therefore, the paper presents laboratory studies of the testing of some adsorption materials for the efficiency of carbon dioxide capture. The key formulas of sorption purification methods are displayed, and the results are presented. Based on experimental studies, an adsorption material was selected that has a potentially high absorption efficiency after activation and refinement of a composition that can be regenerated.

Keywords: flue gases, adsorption, absorption, carbon dioxide, greenhouse effect, sorption materials, absorption efficiency

Industrial enterprises place high demands on the quality of demineralized water, the economic feasibility of this process, as well as its environmental friendliness. The water treatment plant begins with pre-treatment, which allows the removal of dissolved suspensions, mechanical impurities and organic substances. Most often, the pre-cleaning process is organized using clarifiers. The type of clarifier used significantly affects both the efficiency of the process and its economic characteristics. The paper presents a comparative characteristic of the operation of vertical cylindrical clarifiers of the Central Research Institute, VTI and high-speed clarifiers with a pulsating column. The main operational characteristics are highlighted, and the cost of clarified water is calculated when using different types of clarifiers.

Keywords: clarifier, pre-cleaning, cleaning quality indicators, thermal power plants

Reducing the loss of thermal energy in heating systems and increasing their reliability is an urgent task for the thermal power industry. The use of polyurethane foam insulation of pipelines is currently considered as the most promising solution to this problem. However, the construction of a durable and economical pipeline with PU insulation requires certain conditions. Despite the advantages of using PU insulation, the experience of implementing such pipelines has revealed problems arising from emergency situations that directly affect the reduction of energy efficiency. To solve these problems, an operational remote control system is being introduced to eliminate accidents and monitor insulation moisture. The paper presents an analysis of the implementation of LoRaWAN-based SDCs on heating networks in the Republic of Tatarstan. The study shows that in the first year of operation, the number of defects was higher due to the establishment of an information collection system and the installation of sensors. However, the second year of the experiment demonstrated a decrease in the number of defects and accidents, which indicates an increase in the efficiency of the system. It is recommended to introduce pipelines with PU insulation and SOD to increase the reliability and efficiency of heating networks.

Keywords: pipelines, heating networks, polyurethane foam insulation, reliability, durability, energy efficiency, operational remote control system