UV/Chlorine-BAC treatment of antidepressant drug in drinking water:efficacy,process optimization,and microbiological characterization  

作　　者：Xianzhong Li Wanli Yan Jianguo Li Kaiting Zhang Chengsong Ye Mingbao Feng Xin Yu 

机构地区：[1]College of the Environment&Ecology,Xiamen University,Xiamen 361102,China

出　　处：《Frontiers of Environmental Science & Engineering》2024年第10期127-138,共12页环境科学与工程前沿（英文）

基　　金：supported by the National Key R&DProgram of China(No.2023YFE0112100).

摘　　要：The environmental pollution caused by psychotropic drugs harms human health and has prompted a stronger emphasis on research into water treatment measures.The UV/Chlorine-biological activated carbon(BAC)combined process was employed in this study to treat amitriptyline(AMT),a typical psychotropic drug,in slightly contaminated drinking water.The removal efficiency of AMT in drinking water by UV/Chlorine and the feasibility of combining it with BAC were determined.The results demonstrated that the removal efficiency of 1μmol/L AMT could reach 98.5% of the 2.0 mg/L chlorine and UV treated for 30 min.A significant removal improvement of AMT was 10%-45% compared to UV alone,Chlorine alone,and other oxidants combined,especially the SOUR(Specific Oxygen Uptake Rate),which was 57%-90% compared to other oxidants combined.Secondly,the optimal process parameters for UV/Chlorine-BAC treatment of slightly contaminated drinking water were a combination of UV exposure,chlorine dosage of 2 mg/L,and reaction times of i5 min followed by 30 min of BAC treatment.The AMT degradation,CODMn removal efficiency,and NO_(3)-N production was 88%,65%,and 95%,respectively.There was no significant effect on the number of microorganisms in the BAC medium,ensuring good long-term operation.Furthermore,an investigation was conducted to assess the influence of optimal process operation on the microbial community structure within BAC.This analysis unveiled a positive feedback loop in the colony architecture after implementing ideal process parameters.This study provides significant inspiration for addressing residual antidepressant issues using traditional drinking water treatment processes.

关 键 词：UV/Chlorine-BAC Amitriptyline removal Drinking water Microbial community 

分 类 号：TU991.25[建筑科学—市政工程]