Geomatics and Environmental Engineering
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ISSN 1898-1135
e-ISSN: 2300-7095
Issue Date
2019
Volume
Vol. 13
Number
No 3
Description
Journal Volume
Geomatics and Environmental Engineering
Vol. 13 (2019)
Projects
Pages
Articles
Professor Ginter Klein - alumnus of Faculty of Mining Surveying at AGH University of Science and Technology in Krakow - biographical note
(Wydawnictwa AGH, 2019) Bernasik, Jerzy
Analytical assessment of power of composite flash geothermal systems
(Wydawnictwa AGH, 2019) Barbacki, Antoni
Analytical formulas make it possible to observe thermodynamic processes without using advanced numerical procedures, as the relationships between the physical parameters become clearly visible. While less accurate, these formulas enable students at the academic research level to quickly and easily model the phenomena using simple calculation programs.For a single-flash system, the linear approximation makes it possible to obtain the expression for the optimum flash temperature and maximal specific power in the assumed temperature interval of geothermal fluid (100-250°C). These formulas were presented in the author's previous works. Now, this procedure was used in example analyses for double-flash, combination single & second, and combination single & ORC systems. It was shown that, in the assumed temperature interval of geothermal fluid, the percentage of the additional power of composite-flash geothermal systems is almost a linear function of geothermal fluid temperature as related to a single-flash plant and that the single-flash & ORC cycle gives the highest additional specific power.
Increase of organic carbon pool in reclaimed soils under forest stand
(Wydawnictwa AGH, 2019) Gruszczyński, Stanisław; Sroka, Katarzyna; Wojtanowicz, Piotr
This paper contains the results of the studies on the content of organic carbon in the initial soils formed from soilless formations reclaimed for forest management. The obtained data allowed for the assessment of the carbon resources in the organic layer and in the mineral layers close to the surface. It also allowed us to make models that enabled us to determine the main factors influencing the rate of the increase. The strongest influence on the carbon sequestration during the forest reclamation of soilless formations has their lithology (granu-lation) and species composition of the planted trees. The time and situation (on aslope or ahorizontal surface) are less important. The calculated annual increase of carbon indicates that the period necessary to store carbon in reclaimed soils in the quantities similar to the ones occurring in the soils of anatural forest is more than 100 years.
Effect of different disinfection methods on quality of tap water
(Wydawnictwa AGH, 2019) Jachimowski, Artur
This paper specifies the effect of using strong oxidants in water treatment technologies on the formation of disinfection by-products. The study was developed by collecting water samples from four water treatment plants of the Municipal Water and Sewerage Company (MPWiK) in Krakow and at select-ed sampling points within the water supply networks. The analysis was comprised of selected indicators of water quality after the treatment process during the years of 2011-2017. From the carried-out investigation, it was concluded that the concentration of free chlorine in the water supply network concurrently decreased with increases in the distance from the treatment plant. This dependence was found in 19 out of 28 water supply points. While analyzing the annual average concentrations of free chlorine in the municipal water, it was noted that the highest values at the study points occurred in 2011. During the other years, decreases in this indicator were observed. This follows from the analysis that the water disinfection by-products did not exceed permissible limits.
Effect of contact time of gaseous phase in multi-stage contact columns in intermediate ozonation process on reduction of bromate concentration
(Wydawnictwa AGH, 2019) Muszański, Robert
This article describes research on the application of ozone technology for the purification of surface water in the presence of bromides. The pilot system used multistage contact columns for water-ozonation processes with stabilized contact time. The research has shown that the basis for limiting the formation of bromates is the optimum amount of residual ozone after the ozonation process and the constant time of ozone contact with the water. This solution allows us to reduce the formation of harmful compounds and apply ozone technology with water containing carcinogenic precursors.