Određivanje TOC-a, KMnO4 i BPK 5 u površinskim vodama

master's thesis

• Title (english): Determination of TOC, KMnO4 and BOD5 in surface waters
• Author: Mladen Šiljeg
• Mentor: Anita Ptiček Siročić (mentor)
• Committee member: Sanja Kovač (predsjednik povjerenstva)
• Committee member: Anita Ptiček Siročić (član povjerenstva)
• Committee member: Dragana Dogančić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Geotechnical Engineering; Varaždin
• Defense date and country: 2024-09-30, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Interdisciplinary Technical Sciences; Environmental Engineering

Abstract

Površinske vode obuhvaćaju rijeke, jezera, potoke i druge vodene tokove koji su izloženi različitim izvorima onečišćenja, uključuju i otpadne vode, poljoprivredne aktivnosti i
atmosferske padaline. Kakvoća vode ima značajan utjecaj na zdravlje, životne uvjete i op u kvalitetu života ljudi te također potiče socioekonomski razvoj zajednice. S ciljem osiguravanja zdravstveno ispravne vode za vodoopskrbu, industrijske potrebe i
poljoprivredu, kakvo a vode procjenjuje se pomoću fizikalno-kemijskih, bioloških i
mikrobioloških pokazatelja. Uzorkovanje površinskih voda za potrebe ovog diplomskog
rada provedeno je od travnja 2023. do oujka 2024. godine na 5 lokacija u Varaždinskoj
županiji (Lonja, Presećno, Ljubelj, Ljuba voda i Korušak) te su određeni sljedeći
pokazatelji: ukupni organski ugljik (TOC), utrošak kalijeva permanganata (KMnO4) i
biokemijska potrošnja kisika nakon 5 dana (BPK5). Rezultati analiza s pet lokacija u
Varaždinskoj županiji pokazali su sezonsku varijabilnost pokazatelja kakvo e voda.
Vrijednosti TOC-a bile su najviše na lokacijama Ljuba voda i Korušak, posebno u
ljetnim mjesecima, dok je BPK¥ bio značajno veći na lokacijama Korušak i Ljubelj, što
upućuje na prisutnost organske tvari. Potrošnja KMnO¤ također je varirala, s povišenim
vrijednostima u toplijim razdobljima, što ukazuje na povećano organsko onečišćenje u
tim razdobljima.

Abstract (english)

Surface water includes rivers, lakes, streams, and other watercourses that are exposed to
various pollution sources such as wastewater, agricultural activities, and atmospheric
precipitation. Water quality has a significant impact on human health, living conditions,
and overall life quality and it also promotes the socioeconomic development of
communities. Water quality is assessed using physical-chemical, biological, and
microbiological indicators in order to ensure its safety for human consumption,,
industrial needs, and agriculture. Surface water sampling which was used for the purpose
of this master thesis was conducted from April 2023 to March 2024 at five locations in
Varazdin County (Lonja, Presecno, Ljubelj, Ljuba voda, and Koruscak), and the
following indicators were measured: total organic carbon (TOC), potassium
permanganate consumption (KMnO¤), and biochemical oxygen demand after 5 days
(BOD5). The results of the analyses from five locations in Varazdin County showed
seasonal variability in water quality indicators. The highest values of TOC were recorded
at the Ljuba voda and Koruscak locations, particularly in the summer months, while
BOD¥ was significantly higher at the Koruscak and Ljubelj locations, indicating the
presence of organic matter. KMnO¤ consumption also varied, with elevated values during
warmer periods, suggesting increased organic pollution during these times.

• Keywords: površinske vode; analiza vode; ukupni organski ugljik (TOC); utroaak kalijeva permanganata (KMnO4); biokemijska potrošnja kisika nakon 5 dana (BPK5)
• Keywords (english): surface waters; water analysis; total organic carbon (TOC); potassium permanganate consumption (KMnO¤); biochemical oxygen demand after 5 days (BOD5)
• Language: croatian
• URN:NBN: urn:nbn:hr:130:910564
• Study programme: Title: Geoenvironmental Engineering; specializations in: Geoenvironmental Engineering, Environmental Management, Water Management; Course: Water Management; Study programme type: university; Study level: graduate; Academic / professional title: sveučilišni/a magistar/magistra inženjer/inženjerka inženjerstva okoliša (sveučilišni/a magistar/magistra inženjer/inženjerka inženjerstva okoliša)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2024-10-17 09:33:51