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master's thesis
Denitrifikacija i uklanjanje fosfora iz otpadne vode u anoksičnim uvjetima
Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology, 2014. urn:nbn:hr:159:173351
Andrašec, Fran
University of Zagreb
Faculty of Food Technology and Biotechnology
Department of Food Engineering
Laboratory for the Biological Waste Water Treatment

Cite this document

Andrašec, F. (2014). Denitrifikacija i uklanjanje fosfora iz otpadne vode u anoksičnim uvjetima (Master's thesis). Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:159:173351

Andrašec, Fran. "Denitrifikacija i uklanjanje fosfora iz otpadne vode u anoksičnim uvjetima." Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2014. https://urn.nsk.hr/urn:nbn:hr:159:173351

Andrašec, Fran. "Denitrifikacija i uklanjanje fosfora iz otpadne vode u anoksičnim uvjetima." Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2014. https://urn.nsk.hr/urn:nbn:hr:159:173351

Andrašec, F. (2014). 'Denitrifikacija i uklanjanje fosfora iz otpadne vode u anoksičnim uvjetima', Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, accessed 19 April 2024, https://urn.nsk.hr/urn:nbn:hr:159:173351

Andrašec F. Denitrifikacija i uklanjanje fosfora iz otpadne vode u anoksičnim uvjetima [Master's thesis]. Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology; 2014 [cited 2024 April 19] Available at: https://urn.nsk.hr/urn:nbn:hr:159:173351

F. Andrašec, "Denitrifikacija i uklanjanje fosfora iz otpadne vode u anoksičnim uvjetima", Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, Zagreb, 2014. Available at: https://urn.nsk.hr/urn:nbn:hr:159:173351

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Metadata
TitleDenitrifikacija i uklanjanje fosfora iz otpadne vode u anoksičnim uvjetima
Title (english)Denitrification and pfosphorus removal from wastewater under anoxic conditions
AuthorFran Andrašec
MentorTibela Landeka Dragičević (mentor)
GranterUniversity of Zagreb
Faculty of Food Technology and Biotechnology
(Department of Food Engineering)
(Laboratory for the Biological Waste Water Treatment)
Zagreb
Defense date and country2014-09-30, Croatia
Scientific / art field,
discipline and subdiscipline		BIOTECHNICAL SCIENCES
Biotechnology
Abstract
U ovom radu istražena je denitrifikacija i uklanjanje fosfora iz otpadne vode u anoksičnim uvjetima. Kao izvor ugljika korišten je natrijev acetat pri omjerima (i) C/NOx-N = 2 početne koncentracije 77,4 mg NO3-N/L, 0,4 mg NO2-N/L i omjera NO3-N/NO2-N = 194; (ii) C/NOx-N = 3 početne koncentracije NO3-N = 58,2 mg/L, NO2-N = 5,3 mg/L, NO3-N/NO2-N = 11 i (iii) C/NOx-N = 3 početne koncentracije NO3-N = 21,6 mg/L i NO2-N = 9,8 mg/L i NO3-N/NO2-N = 2,2. Pokazano je da aktivni mulj provodi proces denitrifikacije i uklanjanja P u anoksičnim uvjetima, pri koncentraciji otopljenog kisika 0,2 mg/L. Natrijev acetat se pokazao kao dobar izvor ugljika za biološku denitrifikaciju i uklanjanje P. Omjer C/NOx-N = 3 dostatan je za potpunu denitrifikaciju, a omjer C/NOx-N = 2 nije dostatan za potpunu denitrifikaciju u istraživanim uvjetima. Pokusi denitrifikacije su trajali kraće pri većem KPK/N omjeru. Količina asimiliranog fosfora je pri istraživanim uvjetima otopljenog kisika 0,2 mg/L i pri omjerima C/NOx-N = 2 i C/NOx-N = 3, iznosila 74-75%.
Abstract (english)
In this paper denitrification and phosphorus removal from wastewater under anoxic conditions was evaluated. Sodium acetate was used as the carbon source, at ratios: (i) C/NOx-N = 2 initial concentration 77.4 mg NO3-N/L, 0.4 mg NO2-N/L and ratio NO3-N/NO2-N = 194; (ii) C/NOx-N = 3 initial concentration NO3-N = 58.2 mg/L, NO2-N = 5.3 mg/L, and ratio NO3-N/NO2-N = 11 and (iii) C/NOx-N = 3 initial concentration NO3-N = 21.6 mg/L, NO2-N = 9.8 mg/L and ratio NO3-N/NO2-N = 2.2. The obtained results showed that activated sludge carried out processes of denitrification and phosphorus removal under anoxic conditions, at a dissolved oxygen concentration of 0.2 mg/L. Sodium acetate was a good carbon source for biological denitrification and phosphorus removal. Ratio C/NOx-N = 3 was sufficient for complete denitrification, however, ratio C/NOx-N = 2 was insufficient under investigated conditions. At higher COD/N ratio the experiments lasted shorter. The amount of assimilated phosphorus under investigated conditions of dissolved oxygen concentration of 0.2 mg/L and ratios C/NOx-N = 2 and C/NOx-N = 3, was 74-75%. With ratio C/NOx-N = 3 complete denitrification was achieved and with C/NOx-N = 2 it wasn't achieved.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:159:173351
Study programmeTitle: Bioprocess Engineering
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka bioprocesnog inženjerstva (magistar/magistra inženjer/inženjerka bioprocesnog inženjerstva)
Type of resourceText
File originBorn digital
Access conditionsAccess restricted to students and staff of home institution
Terms of useLicence In copyright icon
RepositoryRepository of the Faculty of Food Technology and Biotechnology
Created on2017-05-02 08:10:27

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