doktorska disertacija
Nina Novak (Author), Alenka Majcen Le Marechal (Mentor), Darinka Brodnjak-Vončina (Co-mentor)

Abstract

V doktorski disertaciji predstavljamo študijo določitve stroškovno optimalnih obratovalnih pogojev za razbarvanje in čiščenje vodne raztopine barvila C. I. Reactive Blue 268 z naprednimi procesi čiščenja. Najprej predstavljamo rezultate laboratorijskih eksperimentov in matematične modele procesov UV/H2O2in Fe2+/H2O2. Rezultati kažejo, da lahko z uporabo metodologije odzivnih površin razvijemo ustrezna matematična modela, ki statistično zadostno opišeta odvisnost merjenih odzivov od izbranih (vplivnih) obratovalnih parametrov. Nato prikazujemo študijo optimiranja energijsko intenzivnega procesa UV/H2O2. Kot vplivne parametre smo upoštevali koncentracijo barvila, koncentracijo vodikovega peroksida, pH, čas obdelave in temperaturo. Stroške elektrike, stroške vodikovega peroksida in stroške vode za uravnavanje koncentracije barvila smo upoštevali kot relevantne obratovalne stroške. Čeprav so minimalni stroški čiščenja ocenjeni na visokih 17 /m3, dobljeni rezultati jasno kažejo, da moramo, če želimo zagotoviti obratovalno in ekonomsko učinkovitost, proces optimirati z obeh vidikov hkrati. Ekonomsko učinkovitost lahko dodatno izboljšamo z integracijo naprednih procesov čiščenja. Kot alternative v integriranem sistemu smo upoštevali proces UV/H2O2, proces Fe2+/H2O2 in membransko filtracijo. Procesno shemo integriranega procesa in vrednosti obratovalnih parametrov, pri katerih sistem obratuje pri minimalnih stroških, smo določili s pristopom, ki temelji na matematičnem programiranju. Iz rezultatov je razvidno, da lahko z ustrezno integracijo izbranih procesov znatno znižamo povprečne stroške čiščenja. V primerjavi s procesom UV/H2O2 so ocenjeni povprečni stroški čiščenja integriranega proces približno 75 % nižji (2,4 /m3).

Keywords

tekstilna barvila;napredni oksidacijski postopki;optimiranje;matematično programiranje;metodologija odzivnih površin;

Data

Language: Slovenian
Year of publishing:
Source: [Maribor
Typology: 2.08 - Doctoral Dissertation
Organization: UM FS - Faculty of Mechanical Engineering
Publisher: N. Novak]
UDC: 628.3:677(043.3)
COBISS: 257975296 Link will open in a new window
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Other data

Secondary language: English
Secondary title: Integration of advanced technologies for colored textile wastewater treatment
Secondary abstract: Many processes have been proposed as an effective treatment technology for remediation of colored wastewaters. However, it has frequently been noted that some of them are economically unacceptable due to high operating cost. This thesis provides studies on approaches to determine cost-effective decoloration and mineralization of C. I. Reactive Blue 268 using advanced treatment technologies. First, the results of laboratory experiments and mathematical models of UV/H2O2 and Fe2+/H2O2 processes are presented. The results indicate that the processes can be modeled in a sufficient way by using the response surface methodology. Second, a study on optimization of an energy intensive UV/H2O2 process is presented. Dye concentration, hydrogen peroxide concentration, pH, treatment time, and temperature were considered to be influential operating parameters. Cost of electricity, cost of hydrogen peroxide, and cost of water needed to adjust the dye concentration were considered to be relevant operating costs. Although the minimal treatment cost were estimated to 17 /m3, the results obtained clearly indicate that, in order to assure effective and economically efficient operation any given process should be simultaneously optimized from the perspective of both operational and economic efficiency. The latter can, however, be improved further by integration of advanced treatment technologies. UV/H2O2, Fe2+/H2O2 and membrane filtration were considered as alternatives for the integrated system. The integrated process flow sheet and values of operating parameters yielding minimal operating cost were determined. The results indicate that for the system studied significant reduction in average treatment cost can be achieved by proper integration of the denoted alternatives. Compared to the treatment cost of UV/H2O2, the estimated average treatment cost of an integrated system is approximately 75 % lower (2,4 /m3).
Secondary keywords: wastewater treatment;textile dyes;advanced axidation processes;optimization;mathematical programming;response surface methodology;Odpadne vode;Disertacije;Čiščenje;
URN: URN:SI:UM:
Type (COBISS): Dissertation
Thesis comment: Univ. Maribor, Fak. za strojništvo
Pages: XI, 99 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;various industries;trades and crafts;razne industrije;obrti in rokodelstva;textile industry;tekstilna industrija;
ID: 1015663