Modeliranje procesa biološke obrade otpadnih voda grada Bjelovara

master's thesis

• Title (english): Modelling process for a biological wastewater treatment plant in city of Bjelovar
• Author: Marija Sremić
• Mentor: Mirjana Čurlin (mentor)
• Granter: University of Zagreb; Faculty of Food Technology and Biotechnology; (Department of Process Engineering); (Laboratory for Measurement, Regulation and Automatisation); Zagreb
• Defense date and country: 2010-10-05, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Biotechnology

Abstract

U ovom radu analiziran je proces biološke obrade komunalne otpadne vode grada Bjelovara u razdoblju od siječnja 2006. do prosinca 2009. godine. Mjerenja različitih parametara koji su propisani pravilnikom provode se svakodnevno, a svrha im je dati uvid u učinkovitost procesa obrade na navedenom uređaju. Na temelju njihovih vrijednosti izrađen je viševarijantni linearni model za kemijsku potrošnju kisika, KPK s 25 varijabli i viševarijantni linearni model za biološku potrošnju kisika, BPK5 s 34 varijable. Srednja pogreška viševarijantnog linearnog modela za KPK iznosi γ KPK =18 mg O2 L-1, a za BPK5 γ BPK5 =16 mg O2 L-1. Cilj modela je predviđanje izlaznih vrijednosti KPK i BPK5 jer se time omogućuje učinkovitija kontrola i optimizacija procesa obrade.

Abstract (english)

In this paper, analysis of biological treatment process of municipal wastewater, between January 2006. and December 2009., in the city of Bjelovar, were conducted. The measurements of different parameters, which are prescribed by a permit of a water policy, and have purpose in giving insight in efficiency of treatment process on listed device, are performed on a daily basis. Obtained results were used as a foundation for creating an multivariate linear regerssion model for COD with 25 variables and multivariate linear regression model for BOD with 34 variables. Average error of multivariate linear regression model for COD is γ COD =18 mg L-1 O2, and for BOD γ BOD =16 mg L-1 O2. Purpose of this model is prediction of exiting values of COD and BOD, which can lead to more efficient control and optimization in the process of treatment.

• Keywords: kemijska potrošnja kisika (KPK); biokemijska potrošnja kisika (BPK5); aktivni mulj; viševarijantna linearna regresija; otpadne vode
• Keywords (english): chemical oxygen dissolving (COD); biochemical oxygen dissolving (BOD); activated sludge; Multivariate Linear Regression; wastewater tretment
• Language: croatian
• URN:NBN: urn:nbn:hr:159:019148
• Study programme: Title: Biotechnology; specializations in: Biochemical Engineering; Course: Biochemical Engineering; Study programme type: university; Study level: graduate; Academic / professional title: diplomirani inženjer biotehnologije; smjer biokemijsko inženjerstvo (diplomirani inženjer biotehnologije; smjer biokemijsko inženjerstvo)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2017-08-24 08:18:05