| Citation: | CHENG Y,ZANG J,SONG J J,et al.Degradation efficiency and influencing factors of organic contaminants in O3-H2O2 system based on ozone micro-nanobubbles[J].Journal of Environmental Engineering Technology，2022，12（4）：1317-1323 doi: 10.12153/j.issn.1674-991X.20220194
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Aiming at solving the problem of low mass transfer efficiency and easy generation of disinfection by-products of traditional ozonation technology, ozone micro-nanobubbles combined with H2O2 oxidation system was adopted to improve mass transfer efficiency and oxidation capacity and reduce the production of disinfection by-products. The effects of ozone flow rate, H2O2 concentration, and common groundwater geochemical parameters on the degradation of 2-chlorophenol were investigated, and the application of the O3-H2O2 system to typical environmental pollutants was studied. The experimental results showed that the ozone utilization rate was the highest when the ozone rate was 40 mg/min; O3-H2O2 system had the best degradation efficiency on 2-chlorophenol when H2O2 concentration was 0.5 mmol/L and pH=9; the existence of Cl−, CO3 2−/HCO3 − and natural organic matter inhibited O3-H2O2 system; O3-H2O2 system had good degradation effects on four typical environmental pollutants including antibiotics, chlorophenols, chlorinated hydrocarbons, and nitro-containing organic compounds.
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