diplomsko delo univerzitetnega študijskega programa I. stopnje
Žiga Kvar (Author), Marjana Simonič (Mentor), Irena Petrinić (Co-mentor), Denis Gužvić (Co-mentor)

Abstract

Preučevali smo vpliv predhodne koagulacije površinske vode na učinkovitost ultrafiltracije. Izbrali smo koagulanta PACl in aluminijev sulfat ter dva nova polielektrolita Amerfloc 482 in Amerfloc 487. Dodatek PACl je učinkovitejši, saj smo s skoraj trikrat manjšo količino vodo očistili glede na KPK enako kot z aluminijevim sulfatom. Uporaba samega polielektrolita ni bila uspešna. Najučinkovitejša je kombinacija PACl in Amerfloca 487. Po koagulaciji smo izvajali ultrafiltracijo ter ovrednotili uspešnost predhodne koagulacije glede na pretok vode. Na podlagi meritev smo izračunali ireverzibilno, reverzibilno in celotno mašenje membrane. Ugotovili smo, da je bilo najmanjše ireverzibilno ter celotno mašenje pri 43,2 mg/L PACl v kombinaciji z 0,0218 mg/L Amerfloca 487 pri tlaku 1,5 bara. Pri višjem tlaku je mašenje večje. Iz rezultatov je razvidno tudi, da je celotno mašenje naraščalo z nižanjem pH vrednosti v vzorcu.

Keywords

naravne organske snovi;koagulacija;ultrafiltracija;mašenje;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UM FKKT - Faculty of Chemistry and Chemical Engineering
Publisher: [Ž. Kvar]
UDC: 628.394+628.35(043.2)
COBISS: 17495574 Link will open in a new window
Views: 1384
Downloads: 184
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Other data

Secondary language: English
Secondary title: IMPROVEMENT OF NATURAL ORGANIC MATERIAL REMOVAL FROM WATER
Secondary abstract: The ultrafiltration efficiency of surface water was studied with and without coagulation pretreatment. Two coagulants PACl and aluminium sulfate as well as two novel polyelectrolites Amerfloc 482 and Amerfloc 487 were chosen. PACl was more efficient as aluminium sulfate, because at the use of three times lower dosage the water was purified to the same extent regarding to the COD measurements. If polyelectrolyte alone was used, the treatment was not successful. The most efficient was the combination of PACl and polyelectrolyte Amerfloc 487. After coagulation the ultrafiltration was performed. The efficiency was evaluated by determining the water flux and fouling: reversible, irreversible and total. It was found out that the lowest degrees of irreversible and total fouling were calculated at application of 43,2 mg/L PACl and 0,0218 mg/L Amerfloc 487 at 1,5 bar. At higher pressure the fouling degree was higher. The results showed that total flux decine was increasing by decreasing the pH value of the water sample.
Secondary keywords: natural organic material;coagulation;ultrafiltration;fouling;
URN: URN:SI:UM:
Type (COBISS): Bachelor thesis/paper
Thesis comment: Univ. v Mariboru, Fak. za kemijo in kemijsko tehnologijo
Pages: 54 str.
ID: 8727204
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