Nanobubble Technology Enhanced Ozonation Process for Ammonia Removal

Ozone (O3) has been widely used for water and wastewater treatment due to its strong oxidation ability, however, the utilization efficiency of O3 is constrained by low solubility short half-life during process. Thereby, an integrated approach using novel nanobubble technology ozone method was studied in order enhance ozonization ammonia. Artificial (AW) with initial concentration 1600 mg/L ammonia this study. In ozone-nanobubble group, nano-sized bubbles 2.2 × 107 particles/mL, <200 nm diameter were 14 times higher than those ozone-macrobubble control group. aeration operated 5 min both groups, sampling measurement conducted 30 compare oxidation. H+ by-product ozonation process, thus pH decreased from 8 7 7.5 respectively, after operation. The fast removal observed systems first 10 min, where 835 1110 respectively. concentrations kept fast-decreasing trend reached final performance 82.5% at end experiment, which significantly that (44.2%) Moreover, first-order kinetic model could be describe processes revealed a rate constant (0.064 min?1) compared (0.017 With these results, our study highlights viability proposed high level contaminated water.