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master's thesis
Uloga mikrofaune u smanjenju organskog opterećenja aktivnog mulja
Zagreb: University of Zagreb, Faculty of Science, 2013. urn:nbn:hr:217:899504
Colnar, Andreja
University of Zagreb
Faculty of Science
Department of Biology

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Colnar, A. (2013). Uloga mikrofaune u smanjenju organskog opterećenja aktivnog mulja (Master's thesis). Zagreb: University of Zagreb, Faculty of Science. Retrieved from https://urn.nsk.hr/urn:nbn:hr:217:899504

Colnar, Andreja. "Uloga mikrofaune u smanjenju organskog opterećenja aktivnog mulja." Master's thesis, University of Zagreb, Faculty of Science, 2013. https://urn.nsk.hr/urn:nbn:hr:217:899504

Colnar, Andreja. "Uloga mikrofaune u smanjenju organskog opterećenja aktivnog mulja." Master's thesis, University of Zagreb, Faculty of Science, 2013. https://urn.nsk.hr/urn:nbn:hr:217:899504

Colnar, A. (2013). 'Uloga mikrofaune u smanjenju organskog opterećenja aktivnog mulja', Master's thesis, University of Zagreb, Faculty of Science, accessed 18 April 2024, https://urn.nsk.hr/urn:nbn:hr:217:899504

Colnar A. Uloga mikrofaune u smanjenju organskog opterećenja aktivnog mulja [Master's thesis]. Zagreb: University of Zagreb, Faculty of Science; 2013 [cited 2024 April 18] Available at: https://urn.nsk.hr/urn:nbn:hr:217:899504

A. Colnar, "Uloga mikrofaune u smanjenju organskog opterećenja aktivnog mulja", Master's thesis, University of Zagreb, Faculty of Science, Zagreb, 2013. Available at: https://urn.nsk.hr/urn:nbn:hr:217:899504

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Metadata
TitleUloga mikrofaune u smanjenju organskog opterećenja aktivnog mulja
Title (english)The role of microfauna in organic load reduction in activated sludge treatment
AuthorAndreja Colnar
MentorMaria Špoljar (mentor)
Committee memberMaria Špoljar (predsjednik povjerenstva)
Committee memberJasna Hrenović (član povjerenstva)
Committee memberBožena Mitić (član povjerenstva)
Committee memberZlatko Mihaljević (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Science
(Department of Biology)
Zagreb
Defense date and country2013-02-01, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Biology
Abstract
Aktivni mulj je biomasa mikroorganizama vezana uz organsku tvar u uređajima za biološko pročišćavanje otpadnih voda. Organska tvar predstavlja glavninu sastava otpadnih voda, stoga je u ovom radu analiziran utjecaj mikrofaune na smanjivanje organskog opterećenja s obzirom na veličinu čestica aktivnog mulja. U laboratoriju je tijekom 72 h praćen sastav mikrofaune u različitim koncentracijskim omjerima usitnjenog i neusitnjenog aktivnog mulja. Mikrofauna je značajno utjecala na smanjivanje mutnoće i ukupnih suspendiranih tvari u svim koncentracijskim omjerima. Najbrojnija skupina mikrofaune bili su trepetljikaši, a dominantna vrsta Vorticella convallaria. Sitnije čestice aktivnog mulja značajno su doprinijele hranjenju i povećanju stope rasta mikrofaune. Najveću brojnost u mikrofauni prema načinu života imali su pričvršćeni trepetljikaši, a s obzirom na način prehrane filtratori. Rezultati rada ukazuju da je za smanjene organskog opterećenja na uređaju važno uspostaviti zajednicu pričvršćenih filtratora trepetljikaša i kolnjaka koji najviše pridonose smanjenju suspendiranih organskih tvari.
Abstract (english)
Activated sludge is a biomass of organisms associated with organic matter used in biological treatment of wastewater. Organic matter is the main component of the wastewater, therefore, this thesis analyzes the effect of microfauna in organic load reduction due to size of particles of the activated sludge. The structure of microfauna community in different concentration ratios of disintegrated and normal active sludge was analyzed in laboratory during the period of 72 h. The impact of microfauna on decreasing turbidity and total suspended solids was significant in all concentracion ratios. The most abundant group were ciliates and the dominant species was Vorticella convallaria. Smaller particles of activated sludge have significantly contributed to feeding and increasing growth rate of microfauna. The most abundant according to life forms were attached ciliates and according to the feeding guilds the most abundant were filtrators. Results of this study suggest that for the property functioning of wastewater treatment plant is necessary to establish a community of attached filtrator ciliates and rotifers that contribute the most in decreasing of suspended organic matters.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:217:899504
Study programmeTitle: Ecology
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra ekologije i zaštite prirode (magistar/magistra ekologije i zaštite prirode)
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 Science
Created on2017-04-25 12:45:04

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