Uspešnost naprednega oksidacijskega postopka pri čiščenju tekstilne odpadne vode ter njena ponovna uporaba v procesu barvanja z reaktivnimi barvili

• Main Author: Željko, Tina
• Other Authors: Majcen Le Marechal, Alenka
• Format: Doctoral or Postdoctoral Thesis
• Language: Slovenian
• Published: [T. Željko] 2016
• Subjects: tekstilna odpadna voda; čiščenje tekstilne odpadne vode; UV/H2O2 postopek; in situ proizveden vodikov peroksid; razgradnja vodikovega peroksida; ponovna uporaba tekstilne odpadne vode; barvna metrika; kemometrija; textile wastewater; textile wastewater treatment; UV/H2O2 process; in situ generated hydrogen peroxide; hydrogen peroxide degradation; textile wastewater reuse; colour measurement; chemometrics; info:eu-repo/classification/udc/[628.34:66.094.3]677.027.4(043.3); sami
• Online Access: https://dk.um.si/IzpisGradiva.php?id=58449; https://dk.um.si/Dokument.php?id=97077&dn=; http://www.cobiss.si/scripts/cobiss?command=DISPLAY&base=cobib&rid=19725334&fmt=11

Doktorska disertacija je razdeljena na dva večja sklopa. Prvi je namenjen kemometrijski karakterizaciji tekstilnih odpadnih vod, drugi pa UV/H2O2 postopku. V prvem sklopu smo s pomočjo podrobne kemijske analize posameznih tekstilnih procesnih odpadnih tokov iz tovarne Svilanit ter uporabljenih kemometrijskih metod (korelacijska analiza, CA, PCA in LDA) odpadne tokove klasificirali in ločili na tiste, ki bi se jih dalo obdelati z izbranimi tehnologijami čiščenja (UV/H2O2, UF, NF, MBR ter evapokoncentracija) v tekstilni tovarni sami. V drugem sklopu, ki je namenjen UV/H2O2 postopku, smo izvedli številne eksperimente na različnih napravah. Na laboratorijski UV/H2O2 napravi smo obdelali realne tekstilne odpadne vode iz tovarne Svilanit in Tekstina ter vodne raztopine hidroliziranega reaktivnega barvila RB 4. Na pilotni UV/H2O2 napravi smo obdelali različne realne tekstilne odpadne vode iz postopka barvanja z reaktivnimi barvili, nekaj primerov smo izvedli tudi na tekstilni odpadni vodi, ki je bila predhodno obdelana z UF v tovarni Svilanit. V tovarni Tekstina smo s pilotno UV/H2O2 napravo obdelali realne tekstilne odpadne vode, ki so bile predhodno čiščene z drugimi tehnologijami (NF, MBR ter evapokoncentracija). Najboljše rezultate smo dobili v primeru čiščenja nizko koncentriranih tekstilnih odpadnih vod (absorbanca < 1). Z in situ elektrokemijsko proizvedenim H2O2 na plinsko-difuzijski elektrodi smo pri modificiranem UV/H2O2 postopku prav tako dosegli dobre rezultate razbarvanja in razgradnje realne tekstilne odpadne vode ter raztopin hidroliziranih reaktivnih barvil. Preostali H2O2 smo po laboratorijski UV/H2O2 obdelavi uspešno odstranili z encimatsko razgradnjo (katalaza). Določene tekstilne odpadne vode iz obeh tovarn smo po UV/H2O2 obdelavi ponovno uporabili v procesu barvanja ter s pomočjo barvne metrike določili kvaliteto obarvanega tekstilnega materiala. Iz rezultatov je razvidno, da so le nekatere tekstilne odpadne vode (absorbanca < 1) po UV/H2O2 postopku primerne za ponovno uporabo, primernost ostalih pa lahko izboljšamo še s predhodnim čiščenjem z drugimi tehnologijami. This doctoral dissertation is divided into two big parts. The first one deals with chemometric characterisation of textile effluents, and the second one is aimed towards UV/H2O2 process. In the first part, we classified the effluents with the help of a detailed chemical analysis of individual texitle process waste streams from the Svilanit factory together with the use of chemometric methods (correlation analysis, CA, PCA and LDA), and isolated those that could be treated with selected purification technologies (UV/H2O2, UF, NF, MBR and evapoconcentration), already there in the factory. In the second part that deals with UV/H2O2 process, we carried out various experiments on different machines. We processed real process waste streams from the Svilanit and Tekstina factories as well as aqueous solutions of hydrolysed reactive dye RB 4, on a laboratory UV/H2O2 machine. We treated effluents from the dyeing process with reactive dyes, and we also did a few examples on the effluents that had previously been processed with the UF in the Svilanit factory. All of it was done on the pilot UV/H2O2 machine. In the Tekstina factory, also on the pilot UV/H2O2 machine, we processed real textile effluents that had previously been purified with other technologies (NF, MBR and evapoconcentration). The best results were achieved when we treated the process waste streams with initial absorbance A < 1. Similarly, we also got good results from decolouration and degradation of the real process waste stream, as well as from the aqueous solutions of hydrolysed reactive dyes, with the in situ generated UV/H2O2 that was electrochemically produced on a gas-diffusion electrode. The remaining H2O2 after the UV/H2O2 process was successfully removed with the enzymatic degradation (catalase). Purified process waste streams from both factories were later reused in the dyeing process and the quality of the coloured textile material was determined with the help of the colour measurement. As it can be seen from the results, only some wastewaters (absorbance < 1) are suitable for being directly reused after undergoing the UV/H2O2 process. For the others their adequacy can be improved with the previous treatment with other technologies.