Odstranjevanje nitratov iz pitne vode z modificiranim membranskim bioreaktorjem

diplomsko delo

Aleksandra Petrovič (Author), Marjana Simonič (Mentor), Irena Petrinić (Co-mentor)

Abstract

Namen diplomskega dela je bila popolna denitrifikacija pitne vode (odstranitev nitratov) ob uporabi pilotne naprave, modificiranega membranskega bioreaktorja Zenon ZW 10. Aktivnemu blatu je bil kot vir ogljika dodan sladkor saharoza v ustreznem razmerju C/N. Pred, med in po obdelavi pitne vode so bili spremljani naslednji fizikalno-kemijski parametri: pH, temperatura, motnost, absorbanca pri 254 nm, koncentracija kisika, prevodnost, kemijska potreba po kisiku (KPK), celotni organski ogljik (TOC), vsebnost nitratnih ionov, vsebnost nitritnih ionov, koncentracija aktivnega blata (MLSS) ter koncentracija hlapnih suspendiranih snovi (MLVSS). Osrednji cilj naloge je bila določitev optimalnih procesnih pogojev obratovanja in ob tem ugotoviti ustreznost uporabe saharoze kot vira ogljika. Na osnovi analiz fizikalno-kemijskih parametrov in analize aktivnega blata so bili za dan sistem določeni ustrezen vtok, obtok, optimalno razmerje C/N, izračunana je bila tudi hitrost denitrifikacije. V šestih ciklih obratovanja (različnih časovnih intervalov) pri različnih pogojih in parametrih obratovanja, ki so se spreminjali glede na dosežene rezultate, so bili doseženi sledeči optimalni pogoji obratovanja: razmerje C/N za saharozo 2,5/1, vtok vode 17 mL/min, obtok 85 mL/min. Specifična hitrost denitrifikacije je v ciklu s temi pogoji v povprečju znašala 0,0226 d-1, učinkovitost odstranjevanja nitrata (učinkovitost denitrifikacije) pa je bila 99,36 %.

Keywords

denitrifikacija;membranski bioreaktor;MBR;pitna voda;saharoza;

Data

Language:	Slovenian
Year of publishing:	2011
Source:	Maribor
Typology:	2.11 - Undergraduate Thesis
Organization:	UM FKKT - Faculty of Chemistry and Chemical Engineering
Publisher:	[A. Petrovič]
UDC:	628.316:546.175(043.2)
COBISS:	15368470
Views:	2625
Downloads:	404
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Nitrate removal from drinking water using modified membrane bioreactor
Secondary abstract:	The aim of thesis was a complete denitrification of drinking water (nitrate removal) using a pilot plant, modified membrane bioreactor Zenon ZW 10. Sucrose was added to the activated sludge as a source of carbon in the appropriate ratio C/N. Before, during and after the treatment of drinking water, the following physico-chemical parameters were monitored: pH, temperature, turbidity, absorbance at 254 nm, oxygen concentration, conductivity, chemical oxygen demand (COD), total organic carbon (TOC), content of nitrate ions, content of nitrite ions, concentration of activated sludge (MLSS) and concentration of volatile suspended solids (MLVSS). The central objective of the task was to determine the optimal process operating conditions, to thereby determine the appropriateness of using sugar as a source of carbon. Based on the analysis of physico-chemical parameters and of activated sludge, the appropriate flow, circulation and optimal C/N has been determined. Also the denitrification rate for the given system has been calculated. After six operation cycles (different time intervals), in which operating conditions and parameters were varied according to the results obtained, the following optimal operating conditions were achieved: the ratio of C/N for sucrose 2,5/1, water flow 17 mL/min and circulation 85 mL/min. The average specific denitrification rate calculated under the aforementioned conditions was 0.0226 d-1, the nitrate removal efficiency (denitrification efficiency) was 99.36%.
Secondary keywords:	denitrification;membrane bioreactor;drinking water;sucrose;
URN:	URN:SI:UM:
Type (COBISS):	Undergraduate thesis
Thesis comment:	Univ. v Mariboru, Fak. za kemijo in kemijsko tehnologijo
Pages:	VIII, 78 f.
Keywords (UDC):	applied sciences;medicine;technology;uporabne znanosti;medicina;tehnika;engineering;technology in general;inženirstvo;tehnologija na splošno;public health engineering;water;sanitation;illuminating engineering;sanitarna tehnika;zdravstvena tehnika;voda;sanitarne naprave;svetlobna tehnika;sewage;treatment;disposal;utilization of sewage;odpadne vode;mathematics;natural sciences;naravoslovne vede;matematika;chemistry;crystallography;mineralogy;kemija;inorganic chemistry;anorganska kemija;nonmetals and metalloids in general;
ID:	1015620