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master's thesis
Uklanjanje dušika iz otpadne vode membranskim bioreaktorom
Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology, 2010. urn:nbn:hr:159:676831
Vidić, Bože
University of Zagreb
Faculty of Food Technology and Biotechnology
Department of Food Engineering

Institutional repository: Repository of the Faculty of Food Technology and Biotechnology

Cite this document

Vidić, B. (2010). Uklanjanje dušika iz otpadne vode membranskim bioreaktorom (Master's thesis). Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:159:676831

Vidić, Bože. "Uklanjanje dušika iz otpadne vode membranskim bioreaktorom." Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2010. https://urn.nsk.hr/urn:nbn:hr:159:676831

Vidić, Bože. "Uklanjanje dušika iz otpadne vode membranskim bioreaktorom." Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2010. https://urn.nsk.hr/urn:nbn:hr:159:676831

Vidić, B. (2010). 'Uklanjanje dušika iz otpadne vode membranskim bioreaktorom', Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, accessed 25 January 2025, https://urn.nsk.hr/urn:nbn:hr:159:676831

Vidić B. Uklanjanje dušika iz otpadne vode membranskim bioreaktorom [Master's thesis]. Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology; 2010 [cited 2025 January 25] Available at: https://urn.nsk.hr/urn:nbn:hr:159:676831

B. Vidić, "Uklanjanje dušika iz otpadne vode membranskim bioreaktorom", Master's thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, Zagreb, 2010. Available at: https://urn.nsk.hr/urn:nbn:hr:159:676831

Metadata
TitleUklanjanje dušika iz otpadne vode membranskim bioreaktorom
Title (english)Removal nitrogen from wastewater by membrane bioreactor
AuthorBože Vidić
MentorMarin Matošić (mentor)
GranterUniversity of Zagreb
Faculty of Food Technology and Biotechnology
(Department of Food Engineering)
Zagreb
Defense date and country2010-12-21, Croatia
Scientific / art field,
discipline and subdiscipline		BIOTECHNICAL SCIENCES
Food Technology
Abstract
Kroz 60 dana obrađivana je sintetska otpadna voda na bazi glukoze, amonijevog klorida i peptona biološkom razgradnjom u membranskom bioreaktoru s uronjenim membranama. Kod starosti mulja od 25 dana brzina nitrifikacije iznosila je 0,69 mg N/g MLSS/h, a brzina denitrifikacija 0,96 mg N/g MLSS/h, dok je kod kod starosti mulja od 250 dana brzina nitrifikacije bila 1,88 mg N/g MLSS/h, a brzina denitrifikacija 1,31 mg N/g MLSS/h. Uz naizmjeničnu aeraciju bilo je moguće smanjiti koncentraciju dušika s 80 mg/L na vrijednosti manje od zakonski propisanih. Vođenjem procesa uz starost mulja od 25 dana primijećen je gubitak nitrifikacijske aktivnosti, koja je ponovo uspostavljena povećanjem starosti mulja i dodatkom mikroelemenata u otpadnu vodu. Upotrebom strujanja suspenzije aktivnog mulja preko membrane u fazi bez aeracije uspješno je usporeno začepljivanje membrane. Obradom uz kontinuirani protok sintetske vode te uz prekid filtracije u fazi bez aeracije dobivena je izlazna voda slične kvalitete, a filtracija je u oba slučaja bila stabilna.
Abstract (english)
The experiment of biological wastewater treatment was carried out during 60 days on synthetic wastewater based on glucose, ammonium chloride and peptone in membrane bioreactor with submerged membranes. With sludge retention time (SRT) of 25 days specific nitrification rate was 0.69 mg N/g MLSS/h and specific denitrification rate was 0.96 mg N/g MLSS/h, respectively, while with SRT of 250 days specific nitrification rate was 1.88 mg N/g MLSS/h and specific denitrification rate was 1.31 mg N/g MLSS/h, respectively. With intermittent aeration it was possible to reduce nitrogen concentration from 80 mg/L to values less then required by legislation. While performing the treatment process with SRT of 25 days a loss of nitrification activity was observed and nitrification activity was re-established by increasing the SRT and by including trace elements in the wastewater. By using flow of the mixed liquor over the membrane surface during the anoxic phase, membrane fouling was successfully mitigated. Treatment with continuous flow of synthetic wastewater as well as with stoppage of filtration during the anoxic phase gave effluent of similar quality and the filtration in both cases was stabile.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:159:676831
Study programmeTitle: Food Engineering
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka prehrambenog inženjerstva (magistar/magistra inženjer/inženjerka prehrambenog inženjerstva)
Type of resourceText
File originBorn digital
Access conditionsAccess restricted to students and staff of home institution
Terms of useLicence In copyright icon
Created on2017-08-29 11:45:21