Optimiranje procesa uklanjanja dušika i fosfora u laboratorijskom SBR-u

master's thesis

• Title (english): Optimization of nitrogen and phosphorus removal in laboratory SBR
• Author: Maja Mušić
• Mentor: Marin Matošić (mentor)
• Granter: University of Zagreb; Faculty of Food Technology and Biotechnology; (Department of Food Engineering); (Laboratory for Water Technology); Zagreb
• Defense date and country: 2012, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Food Technology

Abstract

U radu je opisana obrada sintetske otpadne vode u laboratorijskom SBR – uređaju s naglaskom na uklanjanje spojeva s dušikom i fosforom. SBR-uređaj je radio u ciklusima obrade od 12 sati koji su se sastojali od 4 sata anaerobnog punjenja, 6 sati obrade uz naizmjeničnu aeraciju, te 2 sata taloženja i dekantiranja efluenta. Kroz 41 dan pokusa uspješno je smanjena koncentracija dušika i KPK na vrijednosti ispod zakonom propisanih. Iako je primijećeno povećanje udjela fosfora u aktivnom mulju što je ukazivalo na povećanje udjela fosfor akumulirajućih mikroorganizama, koncentracija fosfora u efluentu nije bila dovoljno niska za ispuštanje u prirodni recipijent. Upotrijebljeni matematički model dobro je predvidio prirast aktivnog mulja nakon uspostave ustaljenog stanja.

Abstract (english)

Biological treatment of synthetic wastewater was investigated in an automatically controlled laboratory SBR with emphasis on nitrogen and phosphorus removal. SBR worked in 12 hours treatment cycles which consisted of 4 hours of anaerobic filling, 6 hour treatment with intermittent aeration and 2 hours of settling and decanting. During 41 day of experiment, good removal of nitrogen and COD was achieved. Although increase of phosphorus concentration in the activated sludge was observed which indicated increase of phoshorzs accumulating organisms, concentration of phosphorus in the efluent was not low enough for discharge in natural recipient. Mathematical model successfully predicted experimentally obtained production of activated sludge in stable state.

• Keywords: SBR; otpadna voda; biološka obrada; dušik; fosfor
• Keywords (english): SBR; wastewater; biological treatment; nitrogen; phosphorus
• Language: croatian
• URN:NBN: urn:nbn:hr:159:352521
• Study programme: Title: Food Technology; specializations in: Food Engineering; Course: Food Engineering; Study programme type: university; Study level: graduate; Academic / professional title: diplomirani inženjer prehrambene tehnologije; smjer prehrambeno inženjerstvo (diplomirani inženjer prehrambene tehnologije; smjer prehrambeno inženjerstvo)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2017-05-18 08:39:07