In this study, the degradation of ciprofloxacin (CIP) in wastewater was investigated using UV-based sulfate radical advanced oxidation processes (SR-AOP) and UV-based advanced reduction processes (ARP). More specifically, a comparison of the UV-based persulfate advanced oxidation process (the UV/PS process) and the UV-based sulfite advanced reduction process (the UV/sulfite process) was made. Considering the UV-based SR-AOPs, the UV/PS process was much more efficient than the UV-based peroxymonosulfate advanced oxidation process (the UV/PMS process), with pseudo first order reaction rate constants (k_obs) of 0.752 and 0.145 min^-1, respectively. For the UV-based ARPs, the UV/sulfite process was the most efficient, compared to the UV/sulfide and the UV/dithionite process (k_obs of 0.269, 0.0157 and 0.0329 min^-1, respectively). The optimal process parameters for both the UV/PS and the UV/sulfite process were determined and the contribution of the produced reactive species were identified. For the UV/PS process, maximal CIP degradation was found at pH 8, and both •OH and •SO₄^- were responsible for CIP degradation. For the UV/sulfite process, •H and •e_aq^- were responsible for CIP degradation, with •e_aq^- being the predominant radical at pH 8.5. Although CIP degradation was much faster for the UV/PS process, the UV/sulfite process was determined to be much more efficient in the defluorination of CIP.

在这项研究中，使用基于UV的硫酸根自由基高级氧化工艺（SR-AOP）和基于UV的高级还原工艺（ARP）研究了废水中环丙沙星（CIP）的降解。更具体地，比较了基于UV的过硫酸盐高级氧化工艺（UV / PS工艺）和基于UV的亚硫酸盐高级还原工艺（UV /亚硫酸盐工艺）。考虑到基于UV的SR-AOP，UV / PS工艺比基于UV的过氧一硫酸盐高级氧化工艺（UV / PMS工艺）效率更高，其伪一级反应速率常数（k _obs）为0.752和0.145。 min ^-1。对于基于UV的ARP，与UV /硫化物和UV /连二亚硫酸盐工艺相比，UV /亚硫酸盐工艺效率最高（k分别为0.269、0.0157和0.0329分钟^-1的_obs）。确定了针对UV / PS和UV /亚硫酸盐工艺的最佳工艺参数，并确定了所产生的反应物种的贡献。用于UV / PS处理，最大CIP降解被发现在pH 8，并且两个•OH和•SO ₄ ^-负责CIP降解。用于UV /亚硫酸盐法，•H和•电子_水溶液^-负责CIP降解，与•电子_水溶液^-是最主要自由基在pH8.5。尽管对于UV / PS工艺，CIP的降解要快得多，但已确定UV /亚硫酸盐工艺在CIP的脱氟方面要高效得多。