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Wyszukujesz frazę "biological denitrification" wg kryterium: Wszystkie pola


Wyświetlanie 1-4 z 4
Tytuł:
Assessment of the municipal waste collection process based on irregularities in notifications sent by residents. A case study in Wrocław, Poland
Autorzy:
Dąbrowska, Alicja
Giel, Robert
Plewa, Marcin
Powiązania:
https://bibliotekanauki.pl/articles/207284.pdf
Data publikacji:
2020
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
biological denitrification
temperature
wastewater
glycerol
denitryfikacja biologiczna
temperatura
ścieki
glicerol
Opis:
Socio-economic changes generate the need for the rationalization of economic processes. The risk of failure to achieve the appropriate recycling level by Poland in 2020 required by the EU gives rise to the necessity of the analysis and improvement of processes carried out in the framework of the waste management system. The municipal waste collection comprising transport processes to the indicated locations and processes of waste collection from waste collection points (WCP) has a significant influence on the achieved recycling level. Therefore, the authors attempted to assess the municipal waste collection process in Wrocław. The assessment was carried out based on irregularities in notifications related to waste collection sent by the residents of Wrocław to a company managing the waste collection. The application of the indicator of notifications per resident and the indicator of notifications per WCP as well as carrying out the analysis of time dependences of notifications number enabled the authors to identify the areas in Wrocław characterized by a high intensity of notifications and the reasons for this phenomenon.
Źródło:
Environment Protection Engineering; 2020, 46, 2; 79-92
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of carbon source and nitrate concentration on denitrification of high-nitrate wastewater
Autorzy:
Horová, Dorota
Bezucha, Petr
Růžičková, Iveta
Powiązania:
https://bibliotekanauki.pl/articles/207338.pdf
Data publikacji:
2020
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
activated sludge
biological denitrification
sewage treatment plant
osad czynny
oczyszczalnia ścieków
denitryfikacja biologiczna
Opis:
The aim of the present work was to study the applicability of the activated sludge from a municipal wastewater treatment plant for high strength nitrate denitrification process. A sequenced batch reactor operated at initial nitrate concentration in the range from 750 to 8500 mg NO3 -N/dm3 .The effectiveness of various carbon sources on denitrification rate and nitrite accumulation was studied. The average specific denitrification rate was in the range from 58 to 62 mg NO3 -N /(g VSS·h) for ethanol, glycerol, molasses and whey. The denitrification with methanol was not effective.
Źródło:
Environment Protection Engineering; 2020, 46, 1; 73-89
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Key factors contributing to simultaneous nitrification-denitrification in a biological aerated filter system using oyster shell medium
Autorzy:
Hwang, C.-C.
Weng, C.-H.
Powiązania:
https://bibliotekanauki.pl/articles/208226.pdf
Data publikacji:
2017
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
waste water
dissolved oxygen
oxidation
reactors
anammox
COD
nitryfikacja
ścieki
utlenianie
filtry biologicznie aktywne
CHZt
Opis:
Factors contributing to nitrogen removal in a biological aerated filter (BAF) using oyster shell medium have been investigated. The system was operated in parallel with a bio-ball filter. Both filters were fed with a synthetic domestic wastewater containing approximately 25 mg N/dm3 of total nitrogen (TN). The COD of wastewater was 200 mg O2/dm3. The sizes and dissolved oxygen (DO) of the voids within both filters were measured. Results indicated that the oyster shell system performed better with a nitrogen removal of 64.3%. The two systems exhibited a similar COD removal efficiency of approximated 80%. The oyster shell filter showed higher degree of variability in both sizes and DO levels of its void spaces. The condition provided a favorable environment for nitrogen removal through simultaneous nitrification and denitrification (SND). The release of carbonates from oyster shells were minimal, as judged from mass balance analysis of the system using calcium. It is concluded that the function of a SND reactor can be enhanced by using non-uniform filter media such as oyster shells. On the other hand, alkalinity is not a major concern when treating wastewaters with moderate ammonia concentration, such as that of domestic wastewaters.
Źródło:
Environment Protection Engineering; 2017, 43, 1; 75-86
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Removal of nitrates from wastewater using pond bottom soil
Autorzy:
Erbanová, E.
Palarčík, J.
Slezák, M.
Mikulášek, P.
Powiązania:
https://bibliotekanauki.pl/articles/207872.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
denitrification
dissolved oxygen
lakes
nitrate level
water treatment
biological methods
organic substrate
denitryfikacja
rozpuszczony tlen
jeziora
azotany
uzdatnianie wody
metody biologiczne
podłoże organiczne
Opis:
The possibility of the final treatment of mine water from chemical leaching has been investigated. Despite water purification, high nitrate levels remain in these waters and must be removed. The main requirements are the lowest economic, operating and staffing levels. These requirements are best achieved by the removal of nitrates using biological methods, in our case using the pond bottom soil. Experiments were carried out in a batch mode. The effect of the environment on the denitrification process, the influence of the type and amount of the organic substrate and basic parameters of the denitrification such as redox potential, pH and dissolved oxygen were studied.
Źródło:
Environment Protection Engineering; 2016, 42, 2; 145-154
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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