Evaluating disinfection techniques of water treatment
Gebre Gelete, Hüseyin Gökçekuş, Dilber Uzun Ozsahin, Berna Uzun, Tagesse Gichamo
Abstract
ABSTRACT In the municipal water treatment process, disinfection is used to remove biological contaminants from the water and to make it safe for the intended purpose. There are several types of water disinfection method used in the water supply. Therefore, the objective of this study is to evaluate different water disinfection techniques using the fuzzy preference ranking organization method for enrichment of evaluations (PROMETHEE) to select the best alternative among water disinfection techniques. The study compares five disinfection techniques: ultraviolet radiation (UVR), chlorination, ozone, chloramination (CM) and chlorine dioxide using eight evaluation criteria. The results of this study reveal that UVR is the most preferable disinfection technique and CM is the least as compared with other methods. The results of PROMETHEE were compared with that obtained from the technique for order of preference by similarity to ideal solution and the UVR method is the most preferable.