Statistička obrada pokazatelja onečišćenja komunalne otpadne vode iz crpne stanice „Katalinića brig“ u Splitu

master's thesis

• Title (english): Statistical analysis of contamination indicators in sewer wastewater at the pumping station “Katalinića brig” in city of Split, Croatia
• Author: Sunčica Opačić
• Mentor: Želimir Kurtanjek (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: 2005-12-07, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Biotechnology

Abstract

Statistička obrada paremetara onečišćenja otpadne vode daje vrijedne rezultate važne za vršenje monitoringa kakvoće vode koja se ispušta u recipijent. Također je obvezan postupak u preliminarnoj studiji za izradu projekta biološkog uređaja, te preduvjet za postavljanje matematičkih modela koji će omogućiti što učinkovitiju kontrolu i optimizaciju procesa obrade. Određivanjem statističkih parametara (srednje vrijednosti, standardne devijacije, intervala pouzdanosti, nulte hipoteze i koeficijenta korelacije) analizirani su pokazatelji onečišćenja otpadne vode iz Crpne stanice “Katalinića brig” u Splitu kroz period od 5 godina, a praćenje kretanja vrijednosti ovih pokazatelja ukazalo je na konstantno povišene koncentracije o-fosfata i amonijaka u otpadnoj vodi. Paralelni pokusi provedeni u svrhu provjere reproducibilnosti uzorkovanja i pogrešaka u laboratorijskom određivanju pokazatelja onečišćenja otpadne vode, dali su očekivane rezultate obzirom na visok stupanj nehomogenosti uzoraka i mogućnost manipulacija. Naime, vrijednosti TSS su u slučaju homogenizacije uzorka prije provođenja analize za red veličine veće od onih kada se određivanje vršilo bez prethodne homogenizacije.

Abstract (english)

Statistical analysis of contamination parameters of wastewater yields valuable data for on-line monitoring of water quality in outlet stream to a recipient. It is also a necessary step in preliminary study for process design of a biological wastewater treatment plant based on mathematical models, and provides for effective process control and optimisation. Determined are the statistical parameters (average concentrations, standard deviations, confidence intervals, hypothesis testing, and multifactor correlation coefficients) of contamination levels of communal wastewater at the pumping station “Katalinića Brig” in city of Split, Croatia. Analysed are data for the period of 5 years, from which was observed constant increase in level of o-phosphate and ammonia. Conducted are parallel experiments to evaluate reproducibility of sampling and laboratory analytical error, which gave satisfactory results in view of non-homogeneity of samples and complexity of laboratory manipulations. It was determined that TSS value is for an order of magnitude higher when samples are homogenized in comparison with experiments without homogenization.

• Keywords: komunalna otpadna voda; mehanička obrada; pokazatelji onečišćenja; statistička analiza
• Keywords (english): contamination indicators; mechanical treatment; sewer wastewater; statistical analysis
• Language: croatian
• URN:NBN: urn:nbn:hr:159:014889
• 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: 2017-09-11 13:27:38