Abstract
The trade-off between micropollutant (MP) abatement and bromate (BrO3−) formation is inescapable during the ozonation of bromide-containing water. To avoid the comprise between MPs abatement and BrO3− formation, we developed a novel interface adsorption enhanced membrane contact ozonation (AEMCO) process, in which the boosted oxidation of MPs on the loaded adsorption layer accelerated the consumption of O3 and thus reduced the formation of BrO3−. For a river water, the ciprofloxacin (CIP) removal efficiency and yield of BrO3− was 97.15 % and 0.7 μg/L in the AEMCO process, whereas 39.96 % and 8.3 μg/L in the conventional MCO process. In addition, a reformative Hatta number (Ha-CIP) was used in the AEMCO process to evaluate the relationship between interface adsorption and chemical reactions and guide the adjustment of operating parameters. Our findings provide a potent strategy to tune the trade-off between MPs abatement and BrO3− formation during the ozonation process.
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