中文摘要：

利用光催化O3氧化技术降解油田采出水中2种典型多环芳烃（PAHs）萘和芴,考察了UV-O3和UV-TiO2-O32种氧化体系下羟基自由基·OH的作用及其与不同影响因素（UV波长、pH和O3流量）和降解效率的影响关系。结果表明,2种氧化体系对PAHs的降解率都达到了90%以上,但UV-TiO2-O3的处理效果更好,萘和芴的降解率分别达到了98.35%和100%。UV-O3体系下O3的优化条件是UVC、O3的体积流量30 m L/min,UV-TiO2-O3的优化组合是UVC、pH为8.5,O3的体积流量30 mL/min。

英文摘要：

The photocatalytic ozonation method was applied to remove two typical polycyclic aromatic hydrocarbons, naphthalene and fluorine from produced water. The effect of hydroxyl radicals （ ·OH） was particularly examined in two oxidation systems, namely, UV/O3 and UV/TiO2/O3, with variations of experimental factors （UV wavelength, pH and Ozone）. The results confirmed the strong effect of hydroxyl radicals and showed that the degradation rates in both systems could reach over 90%; however, the system of UV/TiO2/03 presented higher degradation rates of 98.35% and 100% for naphthalene and fluorine, respectively. The optimal conditions were further determined： UVC and qv（O3）=30 mL/min for UV/O3 system; UVC, pH = 8.5 and qv（O3）=30 mL/min for the UV/TiO2/O3 system.