Predobradba bunarske vode bogate huminskim tvarima pomoću ozona

Hlušička, Alex (2016) Predobradba bunarske vode bogate huminskim tvarima pomoću ozona. = Ozonation pretreatment of groundwater rich in humic substances. Master's thesis (Bologna) , Sveučilište u Zagrebu, Fakultet strojarstva i brodogradnje, UNSPECIFIED. Mentor: Juretić, Hrvoje.

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Abstract (Croatian)

Ispitan je utjecaj predozonizacije i naknadne koagulacije na uklanjanje otopljenog organskog ugljika iz sirove bunarske vode. Ispitivanja su provedena za tri glavne grupe pokusa u kojima su se mijenjali razni parametri, kao što su doza ozona, pH vrijednost, koncentracija koagulanta željezovog(III) klorida i inicijalna kalcijeva tvrdoća sirove bunarske vode. Mijenjanjem navedenih parametara, najveći postotak uklanjanja otopljenog organskog ugljika (DOC) iznosio je 84% pri pH vrijednosti od 5,0 uz primijenjenu dozu željezovog(III) klorida od 35 mg/L i dozu ozona u predozonizaciji od 2,1 mg/L. Ozon se pokazao ključnim faktorom u poboljšanju učinkovitosti uklanjanja otopljenog organskog ugljika, budući da su vrijednosti uklanjanja DOC-a modificiranom koagulacijom do 60% niže u odnosu na postupak koji koristi predozonizaciju.

Abstract

The influence of preozonation and subsequent coagulation on the removal of dissolved organic carbon (DOC) from the raw groundwater is studied. The tests were carried out for three main test groups by changing various parameters such as ozone dose, pH value, ferric chloride concentration and calcium hardness of groundwater. The treatment efficiency was evaluated in terms of the reduction of DOC, which was used as a surrogate for natural organic matter (NOM). At the pH value of 5.0, applying a ferric chloride dose of 35 mg/L, preceded by preozonation under an ozone dose of 2.1 mg/L, resulted in a DOC removal efficiency of 84%. Preozonation treatment enhanced the reduction of NOM.

Item Type:	Thesis (Master's thesis (Bologna))
Uncontrolled Keywords:	natural organic matter, ozone, preozonation, coagulation, pH value, ferric chloride
Keywords (Croatian):	prirodna organska tvar, ozon, predozonizacija, koagulacija, pH vrijednost, željezo(III) klorid
Subjects:	TECHNICAL SCIENCE > Mechanical Engineering > process energy engineering
Divisions:	500 Department of Energy, Power Engineering and Environment > 540 Chair of Water and Environmental Engineering
Date Deposited:	14 Jan 2016 10:59
Last Modified:	14 Jan 2016 10:59
URI:	http://repozitorij.fsb.hr/id/eprint/4979

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