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undergraduate thesis
Obrada otpadne vode iz konzerviranja ribe - učinak slanosti na aktivnost adaptiranog aktivnog mulja
Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology, 2020. urn:nbn:hr:159:398049
Ugrina, Marina
University of Zagreb
Faculty of Food Technology and Biotechnology
Department of Food Engineering
Laboratory for the Biological Waste Water Treatment

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

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Ugrina, M. (2020). Obrada otpadne vode iz konzerviranja ribe - učinak slanosti na aktivnost adaptiranog aktivnog mulja (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:159:398049

Ugrina, Marina. "Obrada otpadne vode iz konzerviranja ribe - učinak slanosti na aktivnost adaptiranog aktivnog mulja." Undergraduate thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2020. https://urn.nsk.hr/urn:nbn:hr:159:398049

Ugrina, Marina. "Obrada otpadne vode iz konzerviranja ribe - učinak slanosti na aktivnost adaptiranog aktivnog mulja." Undergraduate thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2020. https://urn.nsk.hr/urn:nbn:hr:159:398049

Ugrina, M. (2020). 'Obrada otpadne vode iz konzerviranja ribe - učinak slanosti na aktivnost adaptiranog aktivnog mulja', Undergraduate thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, accessed 18 February 2025, https://urn.nsk.hr/urn:nbn:hr:159:398049

Ugrina M. Obrada otpadne vode iz konzerviranja ribe - učinak slanosti na aktivnost adaptiranog aktivnog mulja [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology; 2020 [cited 2025 February 18] Available at: https://urn.nsk.hr/urn:nbn:hr:159:398049

M. Ugrina, "Obrada otpadne vode iz konzerviranja ribe - učinak slanosti na aktivnost adaptiranog aktivnog mulja", Undergraduate thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, Zagreb, 2020. Available at: https://urn.nsk.hr/urn:nbn:hr:159:398049

Metadata
TitleObrada otpadne vode iz konzerviranja ribe - učinak slanosti na aktivnost adaptiranog aktivnog mulja
Title (english)Fishcanning wastewater treatment - the effect of salinity on activitiy of adapted activated sludge
AuthorMarina Ugrina
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 country2020-07-10, Croatia
Scientific / art field,
discipline and subdiscipline		BIOTECHNICAL SCIENCES
Biotechnology
Abstract
Učinak soli na učinkovitost uklanjanja organskih i anorganskih sastojaka iz otpadne vode iz procesa konzerviranja ribe istražen je u SBR-u procesom nitritacije/denitritacije pomoću aktivnog mulja adaptiranog na slanost. U pokusu obrade sintetske otpadne vode u kojem nije dodana sol postignuta je učinkovitost uklanjanja KPK 96%, NH₄-N 99% i PO₄-P 97%. S povećanjem slanosti narušava se kakvoća obrađene otpadne vode iz procesa konzerviranja ribe, u smislu uklanjanja C i N, te značajno u smislu uklanjanja P. Slanost se nije odražavala na proces denitritacije. U pokusima obrade otpadne vode iz konzerviranja ribe uz postupno povećanje slanosti od 15 g NaCl/L do 30 g NaCl/L uz povećanje slanosti od 2,5 g NaCl/L aktivni mulj je održavao stabilno visoku učinkovitost uklanjanja KPK> 96% i NH₄-N 98% (<20 g NaCl/L), odnosno 70% uklanjanje KPK i 64% uklanjanje NH4-N (20 g NaCl/L), a daljnje povećanje slanosti je imalo učinak na smanjenje učinkovitosti uklanjanja i KPK i NH₄-N. Postignuto je 63% uklanjanje PO₄-P pri 15 g NaCl/L, odnosno 25% uklanjanja PO₄-P pri 20 g NaCl/L, dok pri koncentraciji soli od ≥22,5 g NaCl/L do 30 g NaCl/L gotovo potpuno je narušeno uklanjanje PO₄-P.
Abstract (english)
The effect of salt on the efficiency of organic and inorganic compound removal from fish canning wastewater was investigated in SBR by the nitritation/denitritation process using activated sludge adapted to salinity. In the synthetic wastewater treatment experiment with no salt added, the removal efficiency of COD 96%, NH₄-N 99% and PO₄-P 97% was achieved. The quality of treated fish canning wastewater is disrupted, in terms of C and N removal, and significantly in term of P removal, with salinity increasing. Salinity was not affected in the denitritation process. Fish canning wastewater treatment with a gradual increasing of salinity (2,5 g NaCl/L) from 15 g NaCl/L to 30 g NaCl/L resulted in stable efficiency removal of > 96% COD and 98% NH₄-N (< 20 g NaCl/L), and 70% COD and 64% NH4-N removal at 20 g NaCl/L, and a further increase in salinity had the effect of reducing both COD and NH₄-N removal efficiency. Results for PO₄-P removal was 63% PO4-P removal at 15 g NaCl/L, 25% PO₄-P removal at 20 g NaCl/L, while at a salt concentration of ≥ 22,5 g NaCl/L to 30 g NaCl/L the removal of PO₄-P is disrupted almost completely.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:159:398049
Study programmeTitle: Biotechnology
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka biotehnologije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka biotehnologije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence Attribution-NoDerivatives 4.0 International (CC BY-ND 4.0) icon
Created on2020-07-22 10:04:46