Li Mo, Zeng Zequan, Li Yingwen, Arowo Moses, Chen Jianfeng, Meng Hong, Shao Lei
State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, PR China; Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, Beijing 100029, PR China.
State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, PR China.
J Environ Manage. 2015 Mar 1;150:404-411. doi: 10.1016/j.jenvman.2014.12.019. Epub 2015 Jan 2.
In this study, simulated amoxicillin wastewater was treated by the O3/Fenton process in a rotating packed bed (RPB) and the results were compared with the Fenton process and the O3 followed by Fenton (O3 + Fenton) process. The chemical oxygen demand (COD) removal rate and the ratio of 5-day biological oxygen demand to chemical oxygen demand (BOD5/COD) in the O3/Fenton process were approximately 17% and 26%, respectively, higher than those in the O3 + Fenton process with an initial pH of 3. The COD removal rate of the amoxicillin solution reached maximum at the Fe(II) concentration of 0.6 mM, temperature of 25 °C, rotation speed of 800 rpm and initial pH of 3. The BOD5/COD of the amoxicillin solution increased from 0 to 0.38 after the solution was treated by the O3/Fenton process. Analysis of the intermediates indicated that the pathway of amoxicillin degradation in the O3/Fenton process was similar to that in the O3 + Fenton process. Contrast experiment results showed that amoxicillin degradation was significantly intensified in the RPB.
在本研究中，采用旋转填充床（RPB）中的O3/Fenton工艺处理模拟阿莫西林废水，并将结果与Fenton工艺以及先O3后Fenton（O3 + Fenton）工艺进行比较。在初始pH为3时，O3/Fenton工艺中化学需氧量（COD）的去除率和五日生化需氧量与化学需氧量的比值（BOD5/COD）分别比O3 + Fenton工艺高出约17%和26%。阿莫西林溶液的COD去除率在Fe(II)浓度为0.6 mM、温度为25 °C、转速为800 rpm以及初始pH为3时达到最大值。经O3/Fenton工艺处理后，阿莫西林溶液的BOD5/COD从0增加到0.38。中间体分析表明，O3/Fenton工艺中阿莫西林的降解途径与O3 + Fenton工艺相似。对比实验结果表明，在旋转填充床中阿莫西林的降解显著增强。
