Učinkovitost aktivnog mulja u obradi komunalne otpadne vode

master's thesis

• Title (english): Efficiency of activated sludge in municipal wastewater treatment
• Author: Sanja Ivanušić
• Mentor: Marija Vuković Domanovac (mentor)
• Committee member: Marija Vuković Domanovac (predsjednik povjerenstva)
• Committee member: Zvjezdana Findrik Blažević (član povjerenstva)
• Committee member: Martina Sudar (član povjerenstva)
• Granter: University of Zagreb; Faculty of Chemical Engineering and Technology; Zagreb
• Defense date and country: 2020-09-30, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Chemical Engineering

Abstract

Čista voda i kanalizacijski sustav potrebe su današnjice, a pročišćavanje otpadnih voda je neophodno. Biološki postupci pročišćavanja komunalnih otpadnih voda najčešće uključuju proces s aktivnim muljem. Aktivni mulj je zajednica mikroorganizama odgovornih za razgradnju različitih onečišćujućih tvari prisutnih u komunalnoj otpadnoj vodi. Prisutna mikrobna zajednica pokazatelj je učinkovitosti rada uređaja za pročišćavanje otpadnih voda zbog povezanosti s fizikalno-kemijskim i operativnim parametrima procesa. U ovom je radu praćena učinkovitost aktivnog mulja tijekom 2019. godine na uređaju za pročišćavanje komunalnih otpadnih voda grada Zagreba. Učinkovitosti uklanjanja taložive krute tvari, ukupne suspendirane tvari, KPK i BPK5 iznosile su više od 90 % u prosjeku, a koncentracija ukupnog dušika i ukupnog fosfora smanjila se za 44 %, odnosno 45 %. Mikroskopska analiza omogućuje brzi uvid u sustav s aktivnim muljem i pridonosi boljem vođenju procesa obrade komunalne otpadne vode.

Abstract (english)

Clean water and sewage system are the needs of today, and wastewater treatment is necessary. Biological processes for municipal wastewater treatment most often involve sludge process. Activated sludge is a community of microorganisms responsible for the decomposition of various pollutants present in municipal wastewater. The present microbial community is an indicator of wastewater treatment plant efficiency due to connection with physico-chemical and operational parameters of the process. In this paper, the efficiency of activated sludge process of municipal wastewater treatment plant of city of Zagreb during the year 2019 was monitored. The removal efficiencies of the settleable solids, total suspended solids, COD and BOD5 were more than 90 % in average, and the concentration of total nitrogen and total phosphorus decreased by 44 % and 45 %, respectively. Microscopic analysis provides quick insight into the activated sludge system and contributes to better process control of municipal wastewater treatment.

• Keywords: aktivni mulj; komunalna otpadna voda; indikatori aktivnog mulja; mikroskopska analiza
• Keywords (english): activated sludge; municipal wastewater; activated sludge indicators; microscopic analysis
• Language: croatian
• URN:NBN: urn:nbn:hr:149:821955
• Study programme: Title: Environmental Engineering - Graduate study; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka ekoinženjerstva (magistar/magistra inženjer/inženjerka ekoinženjerstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access; Embargo expiration date: 2022-10-01
• Created on: 2022-03-03 10:06:13