四环素类抗生素在焦炭填料人工湿地中的去除性能研究  

Degradation Characteristics of Tetracycline Antibiotics in the ArtificialWetland with Carbonaceous Materials

作　　者：徐嫚嫚 石路路 张琴[2] 蒙振思 丁彦礼[4] 白少元[2] XU Manman;SHI Lulu;ZHANG Qin;MENG Zhensi;DING Yanli;BAI Shaoyuan(Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area;Key Laboratory of Environmental Pollution Control Theory and Technology in Guangxi,Guilin University of Technology;Hengsheng Water Environment Management Co.,Ltd;College of Earth Sciences,Guilin University of Technology:Guilin 541004,China)

机构地区：[1]广西岩溶地区水污染控制与用水安全保障协同创新中心 [2]桂林理工大学广西环境污染控制理论与技术重点实验室 [3]恒晟水环境治理股份有限公司 [4]桂林理工大学地球科学学院,广西桂林541004

出　　处：《水处理技术》2022年第12期119-124,共6页Technology of Water Treatment

基　　金：国家自然科学基金资助项目(52260024);广西科技重大专项(桂科AA20161001)。

摘　　要：为研究四环素类抗生素在焦炭填料人工湿地中降解特征及其受植物的影响,构建有植物和无植物2个垂直上流人工湿地实验系统(CW1和CW2),研究对比系统对4种抗生素(TCs)在不同浓度下的去除,TCs在焦炭填料中的累积,以及在植物(根、茎、叶)中的分布,并通过物料衡算探讨4种TCs在湿地系统中的净化机制。结果表明:相同运行条件下,焦炭填料人工湿地对土霉素及四环素的去除率较高(分别为(91.6±2.6)%和(89.9±4.1)%),优于强力霉素和金霉素,植物的存在有利于四环素类抗生素的去除,有植物的CW1对土霉素、四环素、强力霉素和金霉素的平均去除率比无植物的CW2分别高10.5%、4.8%、15.8%及4.0%。研究显示,焦炭填料人工湿地对四环素类抗生素有较好的去除效果,可用于该类污水的处理。Two parallel coke substrate-filled vertical up-flow artificial wetland systems with and without plants(CW1 and CW2)were constructed to evaluate the degradation characteristics and influence of tetracyclines by a plant.The removal of four antibiotics(TCs)with different concentrations,the accumulation of TCs in coke substrate,and the distribution of TCs in plants(root,stem,leaf)were studied and compared in the system.The purification mechanism in the CWs through the material balance was also investigated.The results demonstrated that the removal of oxytetracycline and tetracycline was higher(the average removal rates were(91.6±2.6)%and(89.9±4.1)%,respectively)than the doxycycline and chlortetracycline under the same operating conditions.The CWs with plants exhibited better performance in the TCs removal.The average removal rates of oxytetracycline,tetracycline,doxycycline,and chlortetracycline in CW1 with plants were 10.5%,4.8%,15.8%,and 4.0%respectively,which higher than the CW2 without plants,The research showed that the constructed wetlands with coke had a good removal effect on the tetracycline antibiotics,which can be used for the treatment of this type of sewage.

关 键 词：人工湿地 焦炭填料 四环素 降解特征 

分 类 号：X703.1[环境科学与工程—环境工程]