净水技术2025，Vol.44Issue(4)：62-70,133,10.DOI:10.15890/j.cnki.jsjs.2025.04.008
非均相臭氧催化氧化降解水中盐酸四环素效果
Effect of Heterogeneous Ozone Catalytic Oxidation on Degradation of Tetracycline Hydrochloride in Water
高乐 1蔡佳男 2王琛 3张山风 2游晓旭 2柴文2
作者信息
- 1. 北京市自来水集团有限责任公司,北京 100012||中国地质大学<北京>水资源与环境学院,北京 100083
- 2. 北京市自来水集团有限责任公司,北京 100012
- 3. 中国地质大学<北京>水资源与环境学院,北京 100083
- 折叠
摘要
Abstract
[Objective]In recent years,tetracycline antibiotics are frequently detected in surface water.They are difficult to degrade in environment,which poses a serious threat to human drinking water safety and health.heterogeneous ozone(O3)catalytic oxidation technology is one of the effective ways to treat antibiotic-contaminated water sources,Heterogeneous catalyst can effectively improve the utilization rate of O3 and catalyze the decomposition of O3 to produce hydroxyl radical(HO·)with strong oxidation activity,thus achieving efficient degradation of micro-polluted and refractory organic matter.In addition,heterogeneous catalyst itself has certain adsorbability and can remove part of organic matter.[Methods]The heterogeneous catalysts of metal iron and manganese oxides(Fe-Mn/AC)supported by powdered activated carbon were prepared by impregnation calcination method.The catalysts were characterized by scanning electron microscopy(SEM),X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS)and specific surface area detection(BET).[Results]Tetracycline hydrochloride(TCH)solution was degraded by activated carbon(AC),Fe-Mn/AC,O3,O3+Fe-Mn/AC,respectively.The addition of Fe-Mn/AC catalysis in ozone had been preliminatively verified to improve the removal effect of TCH.The reaction conditions of Fe-Mn/AC catalyzed ozone oxidation of TCH were optimized by single factor variable test.The result showed that when the dosage of catalyst was 0.30 g/L,the initial pH value of the solution was 9,and the dosage of ozone was 4.0 mg/L,the effect of Fe-Mn/AC catalyzed ozone oxidation of TCH could be maximized,and the removal rate of TCH could reach 73.2%.The result of free radical quenching test and catalyst active site detection test showed that in Fe-Mn/AC catalyzed ozone oxidation system,free radical active substances were generated mainly through the interaction of ozone at the active site on the catalyst surface,which increased the production of active free radicals and improves the degradation effect of TCH.In the test of source water labeling,Fe-Mn/AC catalyzed O3 oxidation to degrade TCH in source water,and the removal rate reached 82.8%in 20 min.[Conclusion]The degradation effect of TCH by O3+Fe-Mn/AC is affected by the dosage of catalyst,initial pH of solution and O3 dosage,and there is an optimal value;Fe-Mn/AC can catalyze O3 to produce active free radicals,so compared with O3 system alone,O3+Fe-Mn/AC system can significantly increase the removal rate of TCH;Fe-Mn/AC catalyzed O3 oxidation has great application potential in degradation of TCH source water.关键词
臭氧催化氧化/浸渍煅烧法/非均相催化剂/盐酸四环素/自由基Key words
ozone catalytic oxidation/impregnation calcination method/heterogeneous catalyst/tetracycline hydrochloride/free radical分类
环境科学引用本文复制引用
高乐,蔡佳男,王琛,张山风,游晓旭,柴文..非均相臭氧催化氧化降解水中盐酸四环素效果[J].净水技术,2025,44(4):62-70,133,10.
