Abstract
The Effect of Ozonation, Coagulation and Adsorption on Natural Organic Matter Removal
Highlights
Strong oxidants such as chlorine, chlorine dioxide and ozone have been used in the process of water disinfection
This study investigated the effect of preozonation process, coagulation with usage polyaluminium chloride and adsorption on powdered activated carbon in reducing the level of surface water contamination
The experiment showed the effect of the dose of coagulant, ozone and activated carbon on the effectiveness of removing colour, total organic carbon, oxidisability of water and UV254 absorbance
Summary
Strong oxidants such as chlorine, chlorine dioxide and ozone have been used in the process of water disinfection. Their use can lead to the formation of compounds called disinfection byproducts (DBPs). Trihalomethanes (THMs) and haloacetic acids (HAA) are the two main classes of DBPs that can be present in the waters disinfected with chlorine [Tang et al 2020]. In modern water treatment technology, the processes that prevent the formation of trihalomethanes are more important than the processes that lead to the removal of the already formed THMs [Nawrocki, 2010]. Preventing the formation of THMs means the removal of the natural organic matter (NOM) from water, especially humic and fulvic acids
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