Uklanjanje dušika biološkom nitrifikacijom i denitrifikacijom u membranskom bioreaktoru

master's thesis

• Title (english): Nitrogen removal by biological nitrification and denitrification in membrane bioreactor
• Author: Josip Ćurko
• Mentor: Marin Matošić (mentor)
• Granter: University of Zagreb; Faculty of Food Technology and Biotechnology; (Department of Food Engineering); Zagreb
• Defense date and country: 2007-03-09, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Biotechnology

Abstract

Povećanje efikasnosti uklanjanja dušika iz otpadne vode je od velike je važnosti pri biološkoj obradi. U radu je obrađivana sintetska otpadna voda u membranskom bioreaktoru s naglaskom na uklanjanje ukupnog dušika procesom nitrifikacije i denitrifikacije. Pri šaržnoj nitrifikaciji specifična brzina nitrifikacije iznosila je 1,94 mgN-NO3 -/gMLSSh, a specifična brzina denitrifikacije bila je 1,83 mgN-NO3 -/gMLSSh kad je glukoza dodana odjednom na početku procesa, kada je glukoza dodavana kontinuirano iznosila je 1,52 mgN-NO3 -/gMLSSh, a kada je dozirana u obrocima iznosila je 1,2 mgN-NO3 -/gMLSSh. Bez dodatka glukoze specifična brzina denitrifikacije bila je 0,4 mgN-NO3 -/gMLSSh. Pri uzastopnoj kontinuiranoj nitrifikaciji i denitrifikaciji najbolji rezultati su postignuti kod trajanja nitrifikacije 60 minuta, a denitrifikacije 120 minuta uz smanjenje ukupnog dušika s 45 mg/L na oko 12 mg/L.

Abstract (english)

Increas of efficiency in biological nitrogen removal from waste water is a matter of concern. In this study synthetic waste water was treated in membrane bioreactor with a focus on nitrogen removal by biological process of nitrification and denitrification. In batch nitrification process specific nitrification rate (SNR) was 1,94 mgN-NO3 -/gMLSSh, and during batch denitrification process specific denitrification rate (SDR) was 1,83 mgN-NO3 - /gMLSSh when glucose was added at beginning of process, when glucose was continuously added SDR was 1,52 mgN-NO3 -/gMLSSh and when was dosed in rations SDR was 1,2 mgNNO3 -/gMLSSh. Without glucose SDR was 0,4 mgN-NO3 -/gMLSSh. In sequentially continuous nitrification and denitirification the best results was achieved when nitrification lasted 60 minutes and denitrification lasted 120 minutes to result in nitrogen reduction from 45 mg/L to approximately 12 mg/L.

• Keywords: denitrifikacija; membranski bioreaktor; nitrifikacija
• Keywords (english): denitrification; membrane bioreactor; nitrification
• Language: croatian
• URN:NBN: urn:nbn:hr:159:995503
• 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: 2017-09-06 11:49:46