20.500.12556/DKUM-47363 VPLIV POLIELEKTROLITOV NA VSEBNOST SUHE SNOVI V ODPADNEM AKTIVNEM BLATU THE INFLUENCE OF POLYELECTROLYTE ON DRY RESIDUE IN WASTE ACTIVATED SLUDGE Magistrsko delo obravnava problematiko s področja čiščenja odpadnih voda, pri katerih uporabljamo konvencionalni postopek čiščenja z aktivnim blatom. Zajema opis odpadne vode, virov in njenih lastnosti ter predstavlja postopek čiščenja z aktivnim blatom, proces flokulacije in uporabo različnih polielektrolitov pri procesu dehidracije blata. V preliminarnih poskusih, ki smo jih izvedli na ČN Ptuj, smo s spreminjanjem pretoka na centrifugi preverili, kako omenjena sprememba vpliva na vsebnost suhe snovi v odpadnem aktivnem blatu. Izvedli smo tudi primerjavo med JAR-testom in ročnim mešanjem pri doziranju polielektrolitov. Namen magistrske naloge je bil preveriti vpliv dodatka različnih polielektrolitov, s katerimi smo želeli zvišati vsebnost suhe snovi v odpadnem blatu. ČN Ptuj uporablja polielektrolit Acefloc 80902+. S preverjanjem učinkovitih polielektrolitov smo preverili, ali lahko povečamo vsebnost suhe snovi v odpadnem aktivnem blatu z uporabo različnih polielektrolitov. Pri tem smo uporabili različne polielektrolite, ki smo jih dobili s strani različnih proizvajalcev. Preizkusili smo tekoče in prašnate polielektrolite, ki smo jih dozirali odpadnemu aktivnemu blatu v različnih količinah. Določili smo optimalne koncentracije polielektrolitov, ki bi bili primerni za dosego čim večjega deleža suhe snovi v dehidriranem blatu. Po filtraciji blata (supernatanta) smo določili naslednje parametre: TOC, pH, prevodnost, alkaliteto in motnost. Na podlagi analiz smo ugotovili, kateri izmed polielektrolitov daje najbolj zadovoljive rezultate. Za najučinkovitejše polielektrolite smo naredili ekonomsko analizo in predlagali, kateri polielektrolit bi bilo smiselno uvesti na ČN Ptuj. This master’s thesis dealt with the problematic of waste water treatment by using the conventional cleaning process with activated sludge. Furthermore, waste waters, its sources and characteristics are described, as well as the cleaning process with activated sludge, the process of flocculation and the application of different polyelectrolytes in the process of sludge dehydration. Through variations of the flowrate at the separator within the preliminary tests at the waste water treatment plant in Ptuj, we have examined how these changes influenced the dry matter content in the waste activated sludge. In addition, a comparison between the JAR-test and the manual mixing regarding the dosing of polyelectrolytes was carried out. The purpose of this master’s thesis was to establish the impact of different polyelectrolytes additions to increase the dry matter content in the waste water sludge. The waste water treatment plant in Ptuj uses the Acefloc 80902+ polyelectrolyte. By examining the effective polyelectrolytes, it was determined, if it would be possible to increase the dry matter content in the waste water sludge with the application of different polyelectrolytes. As a result, those various polyelectrolytes, supplied by different producers, were applied. Moreover, polyelectrolytes in liquid and powder form were fed into the waste activated sludge in varying amounts. Optimum concentrations of polyelectrolytes suitable to achieve the highest possible dry matter content in the waste water sludge were determined. After sludge (supernatant) filtration, parameters were set as follows: TOC, pH, conductivity, alkalinity and turbidity. On the basis of these analyses, it was determined which of the polyelectrolytes would ensure the most satisfactory results. Finally, the economic viabilities of the most effective polyelectrolytes were calculated and the most suitable polyelectrolytes for waste water treatment plant in Ptuj were preposed. odpadna voda čiščenje odpadnih voda aktivno blato flokulacija polielektrolit wastewater wastewater treatment activated sludge flocculation polyelectrolyt true true false [N. Zrilić] Slovenski jezik Angleški jezik Magistrsko delo/naloga 2015-02-10 15:04:49 2015-03-04 13:15:48 2022-05-20 03:08:20 2021-05-06 03:30:37 2015 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 628.179.2:628.356(043.2) 18570518 URN:SI:UM:DK:8DSJU5EX MAG_Zrilic_Nika_2015.pdf MAG_Zrilic_Nika_2015.pdf 1 ADEE2112EFE59E4653540870DD9BFD67 dc5c8546cdeaa6cda96d8aa0be47d2f1b25c61066472b1624d19343f14fef712 938bda89-7c0b-11eb-bb7a-00155d0001ca https://dk.um.si/Dokument.php?lang=slv&id=70398 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0