Primerjava učinkovitosti obdelave tekstilnih odpadnih voda s koagulacijo/flokulacijo in membranskim bioreaktorjem

diplomska naloga

Iris Varga (Author), Marjana Simonič (Mentor), Irena Petrinić (Co-mentor)

Abstract

Obdelava tekstilnih odpadnih voda je težavna zaradi njene kompleksne sestave. Največji onesnaževalci teh voda so barvila, ki so težko razgradljiva. Za razbarvanje tekstilnih odpadnih voda je bilo razvitih mnogo različnih metod, vendar zaradi raznolike sestave barvil še niso odkrili univerzalnega postopka. Koagulacija/flokulacija je fizikalno - kemijska metoda, ki je učinkovita pri obdelavi tekstilnih odpadnih voda. Lahko se uporablja kot samostojen proces, v kombinaciji z drugo metodo ali pa kot predobdelava, na primer za membranski bioreaktor. Uporaba membranskega bioreaktorja je postala privlačna alternativa obdelave odpadnih voda, ker vsebuje kombinacijo biološkega čiščenja z aktivnim blatom in membransko filtracijo.Namen diplomske naloge je bilo očistiti modelno sintetično odpadno vodo, ki smo jo pripravili v laboratoriju, s koagulacijo/flokulacijo in membranskim bioreaktorjem. Pri izvajanju koagulacije/flokulacije smo ugotovili, da je FeCl3 bolj učinkovit koagulant pri obdelave modelne odpadne vode, kot Al2(SO4)3. Med obratovanjem MBR pa smo s spremljanjem nekaterih parametrov in izvajanjem kemijskih analiz ugotovili, da se je KPK po biološki obdelavi znižal za 30% in obarvanost za 32 %, po ultrafiltraciji pa se je KPK znižal za 64 % ter obarvanost za 76 %.

Keywords

membranski bioreaktorji;koagulacija;flokulacija;obdelava tekstilne odpadne vode;aktivno blato;biološko čiščenje;ultrafiltracija;

Data

Language:	Slovenian
Year of publishing:	2011
Source:	Maribor
Typology:	2.11 - Undergraduate Thesis
Organization:	UM FKKT - Faculty of Chemistry and Chemical Engineering
Publisher:	[I. Varga]
UDC:	628.394+628.35(043.2)
COBISS:	15407894
Views:	3199
Downloads:	270
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Comparison of treatment efficiency using coagulation/flocculation and membrane bioreactor for textile wastewater
Secondary abstract:	Textile wastewater treatment is problematic because of its complex compositions. The biggest polluters within wastewaters are the dyes because of their lack of degradability. Many different techniques have been developed for textile wastewater decolourisation, but due to the variety of the dyes, there is still no adequate universal cleaning process. Several methods have been developed for textile water decolourisation, but due to the variety of dye structures, the introduction of a proper universal method has been impossible. Coagulation/flocculation is a physical - chemical method that is effective during textile wastewater treatments. It can be used as a separate process, in combination with another method or as a pretreatment, e.g. for a membrane bioreactor. The use of a membrane bioreactor is due to its content being a combination of biological treatments using activated sludge and membrane filtration, an attractive alternative treatment for textile wastewater. The subject of this diploma thesis was the cleaning of synthetically modelled wastewater prepared in the laboratory, using coagulation/flocculation and a membrane bioreactor. During coagulation/flocculation FeCl3 was found to be more effective than Al2(SO4)3 for synthetically modelled wastewater treatment. By measuring individual parameters and the implementation of chemical analyses, was concluded that the COD, after biological treatment, decreased by 30 % and the dye removal by 32 %, after ultrafiltration the COD fell by 64 % and dye removal by 76 %.
Secondary keywords:	membrane bioreactors;coagulation;flocculation;textile wastewater treatment;active slugde;biological treatment;ultrafiltration;acid dyes;
URN:	URN:SI:UM:
Type (COBISS):	Undergraduate thesis
Thesis comment:	Univ. v Mariboru, Fak. za kemijo in kemijsko tehnologijo
Pages:	103 str.
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;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;
ID:	1016336