Formation and distribution of bromine species during ozonation in filtered surface water containing bromide

Abstract:

To investigate the effects of bromide concentration and ozone dosage on the formation of brominated trihalomethane formation potential (THMFP-Br) and BrO3-in ozonation,the effects of ozone dosage and reaction time on the distribution of bromide species were studied.The results show that THMFP-Br can be removed by ozone in water with different bromide concentrations.In low bromide concentration,BrO3-is formed only in high ozone dosage.Ozone dosage has great influence on the amount of total organic bromine (TOBr) on the percent conversion of Br-,but has no obvious effect on THMFP-Br.The generated BrO3-increases and the amount of TOBr decreases with the extended reaction time of ozonation.