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Wyszukujesz frazę "Sludge" wg kryterium: Temat


Tytuł:
Sludge as an agent improving soil properties
Autorzy:
Bartkowska, I
Powiązania:
https://bibliotekanauki.pl/articles/125365.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
sludge
digestion of sludge
sanitation of sludge
natural utilization of sludge
agent improving properties of sludge
Opis:
Sewage-treatment plants generate sludge which needs to be neutralized for legal, esthetical, and practical reasons. Economical and ecological concerns indicate that sludge, as long as it is possible, should be returned to the natural environment. The article presents the process of autothermal thermophilic aerobic digestion (ATAD) as a measure to produce biomass, which can be naturally utilized. The description of theoretical principles of the process in question is accompanied by presentation of an ATAD installation which has been functioning since 2009 at the municipal sewagetreatment plant in Olecko. Results of microbiological and chemical tests carried out in the years 2010–2012 have been analyzed. Examinations embraced sludge which was the final product of the aforementioned sewage-treatment plant.
Źródło:
Journal of Ecological Engineering; 2013, 14, 2; 63-67
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Techniczne i ekonomiczne rozwiązania gospodarki osadami w oczyszczalniach komunalnych
Technical and economical solution in sewage sludge management of the municipal wastewater treatment plants
Autorzy:
Pasterak, N.
Mrowiec, B. M.
Powiązania:
https://bibliotekanauki.pl/articles/400328.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
osady ściekowe
przeróbka osadów
gospodarka osadami
ilość osadów
jakość osadów
sewage sludge
sludge disposal
sludge management
quantity sludge
quality sludge
Opis:
W pracy zaprezentowano porównanie prowadzonej gospodarki osadami ściekowymi w 6 oczyszczalniach ścieków komunalnych o RLM od 50 000 do 400 000. Dla prowadzonej oceny istotnymi zagadnieniami były ilość i jakość oczyszczanych ścieków, funkcjonujący ciąg technologiczny przeróbki osadów, ilość i jakość produkowanych osadów oraz ich ostateczne zagospodarowanie. Znaczącym elementem oceny było również działanie w zakresie wprowadzania nowoczesnych technologii w aspekcie ograniczenia składowania osadów.
The paper presents a comparison of realized wastewater sludge disposal processes in six municipal wastewater treatment plants with a pe of 50 000 to 400 000. For that evaluation, quantity and quality of raw wastewater, functioning line of sludge disposal, the quantity and quality of the produced sludge and their utilization were the important issues. A significant element of the assessment was also action in introducing modern technologies in the aspect of reducing the sludge storage.
Źródło:
Inżynieria Ekologiczna; 2015, 43; 7-14
2081-139X
2392-0629
Pojawia się w:
Inżynieria Ekologiczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Drop in Conductivity of Sewage Sludge in the Process of Autothermal Thermophilic Aerobic Digestion
Autorzy:
Bartkowska, I.
Powiązania:
https://bibliotekanauki.pl/articles/123193.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
autothermal stabilization of sewage sludge
conductivity of sewage sludge
neutralization of sewage sludge
sanitation of sewage sludge
sewage sludge processing
Opis:
The article presents research on the assessment of electrolytic conductivity changes of sludge during the process of its autothermal thermophilic aerobic digestion (ATAD), which takes place in a two-stage installation system, operating in a municipal sewage-treatment plant. In the years 2012–2014 sludge was studied and the results were analyzed. Thickened sludge in the intermediate tank, which was then directed to installation reactors, was examined. Conductivity was measured in each tank. In this manner collected results made it possible to follow the changes of this index at consecutive stages of the system. The results were statistically analyzed and it was determined to what degree, as a result of an objective process, the values of processed sludge conductivity would change. The conclusions from the carried-out studies and from own experiments are also presented.
Źródło:
Journal of Ecological Engineering; 2017, 18, 4; 67-75
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the Quality of Stabilized Municipal Sewage Sludge
Autorzy:
Bartkowska, Izabela
Biedka, Paweł
Tałałaj, Izabela Anna
Powiązania:
https://bibliotekanauki.pl/articles/124921.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
autothermal thermophilic aerobic digestion
digestion of sludge
natural utilization of sludge
sludge
Opis:
The sludge management of many wastewater treatment plants in Poland has not been properly solved yet. The exploiters and designers often have to cope with the dilemma of choosing the method of processing and neutralizing sewage sludge. The method discussed in the article is only one of the options that fully fits in the trends of implementing good practices in the management of sewage sludge. It is a technologically and economically effective as well as environmentally friendly process. It contributes significantly to minimizing the amount of sewage sludge and allows the production of organic fertilizer instead of waste. The work discusses the quality of sewage sludge after autothermal thermophilic stabilization (ATAD). The results of investigations pertaining to the reaction of sludge, dry mass, dry organic matter, content of biogenic substances, calcium and magnesium compounds and heavy metals were analyzed.
Źródło:
Journal of Ecological Engineering; 2019, 20, 2; 200-208
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Changes in hydrogen ion exponent of sewage sludge in the process of autothermal thermophilic aerobic digestion
Autorzy:
Bartkowska, I.
Powiązania:
https://bibliotekanauki.pl/articles/124965.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
activated sludge
hydrogen ion exponent
sewage sludge
sludge processing
thermophilic aerobic digestion
Opis:
This paper presents a study on the evaluation of digested sewage sludge during the process of Autothermal Thermophilic Aerobic Digestion (ATAD), taking place as a three-tank process at a municipal waste water treatment plant in Luban, Poland. ATAD installation was manufactured by FUCHS Enprotec GmbH Mayen-Deutschland. Over the period from June 2006 to February 2010 sewage sludge digested by tha ATAD-Process was examined. The hydrogen ion exponent was measured in every tank. The results obtained indicated changes in the composition of the digesting sludge at successive stages of the process. Over the study period the ATAD-installation was in both a two- and a three-stage process. pH of sludge under study during the process of the thermophilic stabilisation changes and its value grows significantly, with the installation working in a two-stage arrangement from 6,63 to 7,99, and when the installation was operated as a three-stage system from 6,60 to 8,14. The results collected were subject to the statistical analysis. The paper presents conclusions drawn from the study and own experience.
Źródło:
Journal of Ecological Engineering; 2014, 15, 1; 32-37
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of the Influence of Evaporation and Evapotranspiration on the Volume of Sludge Accumulation in the Sludge Drying Beds
Autorzy:
Velychko, Svitlana
Dupliak, Olena
Powiązania:
https://bibliotekanauki.pl/articles/1839097.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
sludge drying beds
evaporation
evapotranspiration
sludge
sewage
Opis:
At present, the sludge drying beds of the Kyiv wastewater treatment plants are operated as a sludge accumulator in an emergency mode, practically without free volume. The purpose of the work was to determine the equation for the evaporation losses calculation from sludge drying beds and the required free volume for sludge accumulation for the next 7 years. The required free volume was calculated using the water budget method which takes into account evaporation from the water surface and evapotranspiration during the vegetation. The total losses from sludge drying beds is 1076 mm/year in normal year and is 920 mm/year in a cold year. The required free volume was calculated considering the trend of increasing average temperature over the last decade and considering the significant environmental risk. A correction was made for one unfavourable year with cold summer and warm winter and an additional rain rate of 1% probability. The additional free volume required is 3.24 million m3 for 7 years if all three sludge drying beds are operated.
Źródło:
Journal of Ecological Engineering; 2021, 22, 2; 63-69
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the Variability of the Composition of Sewage Sludge Before and After Drying Treatment – SEM Studies
Autorzy:
Kiper, Justyna
Głowacka, Anna
Rucińska, Teresa
Powiązania:
https://bibliotekanauki.pl/articles/124107.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
sewage sludge
sewage sludge management
SEM observation
Opis:
The aim of the study was to determine the physical and chemical properties of the sewage sludge from “Pomorzany” and “Zdroje” municipal wastewater treatment plants located in Szczecin, Poland. The paper presents the outcomes of SEM observation of dried and stabilized sewage sludge. The research on the obtained materials was conducted using reference methods; the images from a scanning electron microscope were used. The amount of sewage sludge produced with the methods of its management was presented. The technology of sludge management is based on its dehydration up to dry weight content of roughly 20% and then drying in contact dryers up to 90–92% dry weight, separately in both plants. Dried sewage sludge is subsequently burned in mechanical grid boilers at “Pomorzany” WWTP. The analyzed materials were characterized by the pH of 7.90–8.42, dry mass and average organic matter content were 18.949% and 68.903%, respectively. The elements identified in the largest amount on the surface of analyzed materials included calcium, iron, phosphorus, sulphur and silicon. The amount of phosphorus ranging from 1.82 to 3.44% indicates the possibility of using sewage sludge as organic fertilizer product or an alternative source of phosphorus.
Źródło:
Journal of Ecological Engineering; 2019, 20, 7; 45-52
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zagospodarowanie komunalnych osadów ściekowych metodami termicznymi w obliczu zakazu składowania po 1 stycznia 2016
Utilisation of municipal sewage sludge by thermal methods in the face of storage disallowing
Autorzy:
Bień, J. D.
Bień, B.
Powiązania:
https://bibliotekanauki.pl/articles/399498.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
osady ściekowe
suszenie
spalanie
instalacje termicznego przekształcania
sewage sludge
sludge drying
sludge incineration
thermal methods of sludge utilization
Opis:
Z dniem 1 stycznia 2016 r. zacznie obowiązywać zakaz składowania komunalnych osadów ściekowych na składowiskach odpadów. Modernizacja i budowa nowych oczyszczalni ścieków spowodowała wzrost ilości wytwarzanych komunalnych osadów ściekowych w ostatnich kilkunastu latach. Ich ilość kształtuje się obecnie na poziomie powyżej 500 tys. Mg s.m i zakładany jest dalszy ich wzrost, choć z pewnością nie tak znaczący jak przewidywano jeszcze parę lat temu. Realizując strategię określoną w Krajowym Planie Gospodarki Odpadami (KPGO) polegającą na całkowitym zaniechaniu składowania osadów ściekowych a zdecydowanym zwiększeniu ilości komunalnych osadów ściekowych przetwarzanych przed wprowadzeniem do środowiska oraz osadów przekształcanych metodami termicznymi wielu eksploatatorów oczyszczalni wybrało ten ostatni kierunek. W artykule przedstawiono aktualny stan w zakresie termicznego przekształcania komunalnych osadów ściekowych w Polsce.
According to the data announced by the Central Statistical Office (GUS) in 2014 in Poland, there are more than three thousands municipal wastewater treatment plants. Most of them are relatively new. Modern and highly efficient wastewater treatment systems produce significant amounts of municipal sewage sludge. The amount of sludge starts to create huge problems in their proper management. In addition, from 1st of January 2016 storage of sewage sludge, which so far has been one of the popular methods of sludge management will be impossible. Thermal methods of disposal are currently considered as an interesting option in sludge management. Currently, in Poland there are several plants where sewage sludge is incinerated or dried. The paper presents the status of thermal method of municipal sewage sludge utilization before the date of storage disallowing.
Źródło:
Inżynieria Ekologiczna; 2015, 45; 36-43
2081-139X
2392-0629
Pojawia się w:
Inżynieria Ekologiczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of Selected Technical and Technological Parameters of the Sewage Sludge Stability Process
Autorzy:
Bartkowska, I.
Wawrentowicz, D.
Powiązania:
https://bibliotekanauki.pl/articles/123847.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
autothermal thermophilic stabilization
sewage sludge
dry mass
organic substances
sewage sludge hygienization
sewage sludge in agriculture
Opis:
The article presents the results of the analysis, which was carried out in 2015-2017 on the example of autothermal installation of thermophilic sludge stabilization (ATAD) in a sewage treatment plant in Giżycko. The installation was created in 2003 as the first of its kind and still remains operational. The purpose of the conducted research was to assess the suitability of the analyzed technological parameters as tools that can be used by operators to determine the actual possibilities of changing the operating conditions of the installation or to develop an optimization strategy to reduce the energy demand. The dry mass content and organic dry mass content was used as the assessment indicators. In the analysed period, the sludge from the process contained from 47.47% to 60.80% of organic matter in the dry mass of the sludge. The organic dry matter decrease due to the process was also calculated, and it ranged from 26.4% to 48.7%. The amount of sludge undergoing the process and the amount of electricity consumption were also analysed. On this basis, the energy consumption indicators in the ATAD process were calculated.
Źródło:
Journal of Ecological Engineering; 2018, 19, 4; 69-74
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Liming of Acidic Soils with Belite Sludge
Autorzy:
Isakov, A. E.
Barygina, K. V.
Powiązania:
https://bibliotekanauki.pl/articles/124174.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
belite sludge
nepheline sludge
liming
acidic soils
recycling
metallurgical wastes
Opis:
The metallurgical enterprises are a major source of large-tonnage industrial wastes containing valued components. A significant discrepancy between the volumes of waste formations and its utilisation leads to the necessity of large-scale sludge dumping. The article describes a recycling method for belite sludge that is the waste of the alumina production from nepheline concentrate. The physical and chemical properties of belite sludge were analysed and the conclusions about the possibility and outlook of its using as an ameliorant were drown. The main results show that adding the belite sludge to acidic soils provides a certain positive effect. The main conclusions allow to say that belite sludges are an ecologically safe substance that can be used as a liming material for acidic soils.
Źródło:
Journal of Ecological Engineering; 2017, 18, 6; 95-102
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of respirometric tests for assessment of methanogenic bacteria activity in wastewater sludge processing
Autorzy:
Cimochowicz-Rybicka, M
Rybicki, S
Powiązania:
https://bibliotekanauki.pl/articles/124522.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
sewage sludge
methanogenic activity
sludge digestion
renewable energy
energy recovery
Opis:
Production of a methane-rich gas (‘biogas’) is contemporary popular sludges processing technology which allows to generate thermal and/or electric energy. Formal requirements issued by the European Union to promote so called renewable energy resources made these process more attractive leading to its application in WWTPs which were designed based on different sludge handling processes. Authors (as active design engineers) noted that dimensioning sludge digestion chamber is usually based on SRT assessment without any emphasis on sludge characteristics. Bio-mass characteristics and the estimation of its activity with respect to methane production are of great importance, from both scientific and practical points of view, as anaerobic digestion appears to be one of crucial processes in municipal wastewater handling and disposal. The authors propose respirometric tests to estimate a biomass potential to produce ‘a biogas’ and several years’ laboratory and full scale experience proved its usefulness and reliability both as a measurement and a design tool applicable in sludge handling. Dimensioning method proposed by authors, allows to construct and optimize operation of digestion chambers based on a methanogenic activity.
Źródło:
Journal of Ecological Engineering; 2013, 14, 3; 44-52
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Alternating Aerobic and Anoxic Conditions to Eliminate Sludge Accumulation in the Oxidation Ditch System
Autorzy:
El-Morsy, Ahmed
Ayoub, Mohamed
Powiązania:
https://bibliotekanauki.pl/articles/24201600.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
activated sludge
denitrification
nitrification
oxidation ditch
sludge accumulation
upgrade
wastewater treatment
Opis:
The purpose of the present study is to investigate the performance of an upgraded oxidation ditch (OD) system, which was designed and implemented to solve the problem of sludge accumulation at the bottom as well as to get the best removal efficiency of total nitrogen (TN). The upgrading concept is based on dividing the operating volume of the upgraded OD to achieve interchanging between aerobic and anoxic circumstances in order to provide simultaneous nitrification and denitrification (SND). The obtained results indicated that the average TN removal efficiency was 60%, which could be obtained due to a highly efficient SND approach. In addition, the better TN removal efficiency corresponds to the lower sludge volume index (SVI), which reflects the efficiency of the upgraded OD in preventing the accumulation of sludge at the bottom. Effluent ammonium-nitrogen (NH4+-N) and nitrate (NO3--N) concentrations corresponding to a minimum SVI of 41.9 mL/g were 8.6 mg/L for NH4+-N and 8.6 mg/L for NO3--N, respectively. Furthermore, the upgraded OD successfully removes 5-day biochemical oxygen demand (BOD5), chemical oxygen demand (COD), and total suspended solids (TSS) below the permissible limit for final effluent of 60, 80, and 50 mg/L respectively.
Źródło:
Journal of Ecological Engineering; 2023, 24, 3; 304--314
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact of Aerobic Stabilization of Sewage Sludge on PAHs Concentration in Reject Waters
Autorzy:
Kozak, Jolanta
Włodarczyk-Makuła, Maria
Popenda, Agnieszka
Powiązania:
https://bibliotekanauki.pl/articles/1839628.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
PAHs
municipal sewage sludge
coking sewage sludge
reject water
aerobic stabilization
Opis:
In the paper, the results of studies on changes in the concentration of selected polycyclic aromatic hydrocarbons (PAHs) in the reject water coming from aerobic stabilization of sewage sludge process were given. The sewage sludge samples originating from a treatment of municipal wastewater treatment plant and an industrial coking wastewater treatment plant were investigated. A technological study was conducted using a municipal sewage sludge (control sample) and a mixture of municipal and industrial sewage sludge simultaneously. Aerobic stabilization of sewage sludge process was carried out for 21 days. The concentration of PAHs was determined at the beginning of the experiment (day 0) and in seven-day intervals: after 7, 14 and 21 days. The initial concentration of PAHs in the reject water coming from the municipal sewage sludge was over 44 g/dm3. Industrial sewage sludge was heavily loaded with polycyclic aromatic hydrocarbons. In a reject water of the mixture of municipal and industrial sludge, the initial content of PAHs reached over 5200 g/dm3. During aerobic stabilization of sewage sludge, a decrease in PAHs concentration in reject water was observed. After 21 days of the experiment, the decrease of the sum of analyzed PAHs was in the range of 62–98%.
Źródło:
Journal of Ecological Engineering; 2021, 22, 4; 27-35
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermodynamic Analysis and Mathematic Modeling of Waste Sludge from Drinking Water Treatment Plants
Autorzy:
Azeddine, Fantasse
El Khadir, Lakhal
Ali, Idlimam
Powiązania:
https://bibliotekanauki.pl/articles/2026746.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
drinking water sludge
sludge valorization
wastewater management
thermodynamic analysis
isosteric heat
Opis:
Water treatment annually produces a huge amount of Drinking Water Treatment Sludge (DWTS) wastes. The latter causes environmental problems in Morocco in terms of energy and pollution. Therefore, cost-effective and eco-friendly solutions for managing them should be proposed in order to reduce the frequency of storage along with transportation costs. In this paper, a thermodynamic analysis of DWTS wastes was conducted based on the isosteric heat and compensation theory. Different results concerning the mineralogical identification of sludges were established. Findings revealed that the by-product of water purification was mainly composed of aluminum, silica and iron hydroxides, with pH varying between 6.23 and 6.85. The suspended matter was between 18.3 and 19.6 m/l. The volatile matter of the three sludge samples was between 18 and 21%. The measured dry matter content was between 13.41 and 15.23%. The experimental tests were performed under temperatures from 45 and 60 °C, the experimental data of the sorption curves were fitted by using several models of correlation. Furthermore, the analysis showed that the Peleg’s model perfectly described the isotherm curves in the activities ranging from 0 to 90%. The net isosteric heats of sorption of the three hydroxide sludge from the Moroccan treatment station: $S_k$, $S_m$ and $S_s$, were determined for desorption and adsorption. Moreover, it was revealed that the equilibrium water content rising lead contributed to the reduction of the net isosteric heat and the entropy of sorption. Finally, the enthalpy-entropy compensation showed that the sorption mechanism involved was enthalpy driven.
Źródło:
Journal of Ecological Engineering; 2022, 23, 2; 140-149
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of Untreated, Lime-Stabilised and Composted Wastewater Sludges from a Pulp, Board and Paper Mill Integrate as a Fertiliser Product
Autorzy:
Oksanen, Juha
Pöykiö, Risto
Dahl, Olli
Powiązania:
https://bibliotekanauki.pl/articles/1838421.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
pulp sludge
paper mill sludge
fertiliser
forest industry
BCR sequential extraction
Opis:
In this study, the physical and chemical properties of untreated, lime-stabilised and composted wastewater sludges from a Finnish pulp, board and paper mill integrate were compared in order to assess their fertiliser properties based on the requirement of the Finnish Fertilizer Product Decree. Furthermore, the extraction properties of heavy metals in the sludges were assessed by the three-stage sequential extraction procedure of the Community Bureau of Reference (BCR) and the solubility indices for heavy metals were calculated in order to evaluate the release potential of elements from the sample (sludge) matrix. The results of this study indicated that the total heavy metal (As, Cd, Cr, Cu, Hg, Ni, Pb and Zn) concentrations in all sludges were lower than the statutory Finnish limit values for fertiliser products. However, the untreated sludge required either lime-stabilisation or composting in order to fulfil the Finnish maximum concentrations of pathogens (coliforms and Escherichia coli) for fertiliser products.
Źródło:
Journal of Ecological Engineering; 2021, 22, 5; 47-58
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł

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