scholarly journals Determination of Anthropogenic Changes in Urbanized Territories Using GIS Technology

2017 ◽  
Vol 63 (1) ◽  
pp. 8-14
Author(s):  
Igor Patrakeyev ◽  
Victor Ziborov ◽  
Nadia Lazorenko-Hevel
Keyword(s):  
Nuclear Power ◽  
Power Plants ◽  
Thermal Structure ◽  
Thermal Power ◽  
Infrared Range ◽  
Gis Technology ◽  
Thermal Anomalies ◽  
Power Stations ◽  
Thermal Power Stations ◽  
Anthropogenic Systems

Abstract The research aim is to obtain a cartographic model of an urbanized territory by means of thermal survey in an infrared range. With this cartographic model, it will be then possible to reduce the zones in the urbanized territories differing in the level of superficial heat. Further, we will be able to reduce the proof thermal anomalies and thermal structures of the localities that are related to the natural and anthropogenic systems. On the examples of the cities of Ukraine – Energodar and Nikopol, we defined the sources of caloradiances from major industrial concerns as well as from thermal and nuclear power plants. For comparison, we built the model of thermal structure of the city of Tokai and the nuclear power plant with the same name Tokai (Japan). The sources of caloradiances can be, for example, pipes of thermal power stations, ponds-coolers, corps of steel-making production, and other similar objects. If the sizes of such source are known, then we are able to get the absolute values of temperatures.

The Latest Research in Mongolia on the Utilization of Coal Combustion By-Products

2021 ◽  
Vol 323 ◽  
pp. 8-13
Author(s):  
Jadambaa Temuujin ◽  
Damdinsuren Munkhtuvshin ◽  
Claus H. Ruescher
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Coal Combustion ◽  
Power Plants ◽  
Thermal Power ◽  
Thermal Power Plants ◽  
Power Stations ◽  
Thermal Power Stations ◽  
Coal Ashes ◽  
By Products

With a geological reserve of over 170 billion tons, coal is the most abundant energy source in Mongolia with six operating thermal power stations. Moreover, in Ulaanbaatar city over 210000 families live in the Ger district and use over 800000 tons of coal as a fuel. The three thermal power plants in Ulaanbaatar burn about 5 million tons of coal, resulting in more than 500000 tons of coal combustion by-products per year. Globally, the ashes produced by thermal power plants, boilers, and single ovens pose serious environmental problems. The utilization of various types of waste is one of the factors determining the sustainability of cities. Therefore, the processing of wastes for re-use or disposal is a critical topic in waste management and materials research. According to research, the Mongolian capital city's air and soil quality has reached a disastrous level. The main reasons for air pollution in Ulaanbaatar are reported as being coal-fired stoves of the Ger residential district, thermal power stations, small and medium-sized low-pressure furnaces, and motor vehicles. Previously, coal ashes have been used to prepare advanced materials such as glass-ceramics with the hardness of 6.35 GPa, geopolymer concrete with compressive strength of over 30 MPa and zeolite A with a Cr (III) removal capacity of 35.8 mg/g. Here we discuss our latest results on the utilization of fly ash for preparation of a cement stabilized base layer for paved roads, mechanically activated fly ash for use in concrete production, and coal ash from the Ger district for preparation of an adsorbent. An addition of 20% fly ash to 5-8% cement made from a mixture of road base gave a compressive strength of ~ 4MPa, which exceeds the standard. Using coal ashes from Ger district prepared a new type of adsorbent material capable of removing various organic pollutants from tannery water was developed. This ash also showed weak leaching characteristics in water and acidic environment, which opens up an excellent opportunity to utilize.

scholarly journals COMPARATIVE STUDY OF MORPHOLOGY OF VARIOUS FLY ASHES AND POND ASHES FROM DIFFERENT THERMAL POWER STATIONS IN MONGOLIA

2016 ◽  
pp. 5-10 ◽  
Author(s):  
Uyat Bayanzul ◽  
Jadambaa Temuujin ◽  
Amgalan Minjigmaa ◽  
Amgalan Bekhbaatar ◽  
B Battsetseg ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Specific Surface ◽  
Power Plants ◽  
Thermal Power ◽  
Bottom Ash ◽  
Area Measurement ◽  
Chemical Compositions ◽  
Fly Ashes ◽  
Power Stations ◽  
Thermal Power Stations

In Mongolia coal fired thermal power stations produce over 90% of the country’s electricity. Three thermal power stations located in Ulaanbaatar city produce more than 80% of all electricity produced in Mongolia. The annual output of fly ash and bottom ash from these thermal power stations is about 600,000 tons. The thermal power plants in Ulaanbaatar city use coal from Baganuur and Shivee-Ovoo deposits. This research was conducted to compare morphologies of various fly ashes and pond ashes from TPS in Mongolia. Fly ashes from TPS4 and pond ashes from TPS3 and TPS4 of Ulaanbaatar city were characterized by x-ray fluorescence (XRF), transmission electron microscopy (TEM), laser particle size distribution analyzer, specific surface area measurement (BET), and scanning electron microscopy (SEM). The chemical compositions of the fly ashes and pond ashes indicate that they are class C ashes. Specific surface areas of the fly ashes and pond ashes varied from 1.04 to 25.2 m2/g. Radiation measurements that were performed by γ-spectroscopy indicate that the radium equivalent changed from 292 to 761 Bq/kg in the various ashes.  

scholarly journals Radioactive Pollution Generated by the Electric Powers Using Coal as Combustible

2018 ◽  
Vol 24 (3) ◽  
pp. 59-65
Author(s):  
Petru Mursa ◽  
Florin Vocheci ◽  
Răzvan-Olimpiu Dumitrescu ◽  
Laurenţiu Daniel Nicolae Şufaru
Keyword(s):  
Power Plants ◽  
Building Materials ◽  
Thermal Power ◽  
Radioactive Pollution ◽  
Multiplication Factor ◽  
Radionuclide Concentration ◽  
Radioactive Materials ◽  
Power Stations ◽  
Knowing That ◽  
Thermal Power Stations

Abstract A type of NORM (Normally Occurring Radioactive Materials) category is coal used as a fuel in power plants. The ash resulting from their burning is stored in the heaps near the thermal power stations and has a multiplication factor of the radionuclide concentration between 2 and 10, compared to the coal from which it originates. Even if in this case the radioactive pollution does not represent a significant danger for the population, this ash can be used in the construction of building materials, and thus through radon disintegration products emanating from these materials, can contribute to increasing the dose of ionizing radiation of the population, knowing that most of their lives and spend it inside buildings

Adaptation of Algorithms for Diagnostics of Steam Turbine Unit Equipment to Specific Conditions at Thermal Power Stations

2020 ◽  
Vol 67 (11) ◽  
pp. 800-804
Author(s):  
K. E. Aronson ◽  
B. E. Murmansky ◽  
V. B. Novoselov ◽  
Yu. M. Brodov ◽  
A. Yu. Sosnovsky ◽  
...  
Keyword(s):  
Steam Turbine ◽  
Turbine Unit ◽  
Thermal Power ◽  
Steam Turbine Unit ◽  
Power Stations ◽  
Thermal Power Stations
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