多种类抗生素对垂直流人工湿地净化作用的影响机制  

The influence mechanism of multiple antibiotics on the purification efficiency of vertical flow constructed wetlands

作　　者：王梦婷 郑于聪[1,2] 郝梦晴 程晓阳 王晓昌[1,2] 陈荣[1,2] DZAKPASU Mawuli WANG Mengting;ZHENG Yucong;HAO Mengqing;CHENG Xiaoyang;WANG Xiaochang;CHEN Rong;DZAKPASU Mawuli(School of Environmental and Municipal Engineering,Xi′an University of Architecture and Technology,Xi′an 710055,China;Key Laboratory of Northwest Water Resource and Environment Ecology,Ministry of Education,Xi′an University of Architecture and Technology,Xi′an 710055,China)

机构地区：[1]西安建筑科技大学环境与市政工程学院,西安710055 [2]西安建筑科技大学,西北水资源与环境生态教育部重点实验室,西安710055

出　　处：《环境工程学报》2024年第5期1365-1372,共8页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金面上资助项目(52370180);陕西省重点研发计划项目(2022SF-454)。

摘　　要：针对抗生素残留造成的水环境安全问题,以提升人工湿地的水质安全保障功能为目的,研究抗生素对人工湿地净化功能的影响机制。通过构建添加抗生素组上向垂直流人工湿地(CW-A)和对照组人工湿地(CW),研究多类别抗生素在人工湿地中的去除特点及其对人工湿地污染物去除效果、植物生长特性,微生物群落组成的影响作用。结果表明,人工湿地对环丙沙星(CIP)的去除率为96.03%,显著高于对磺胺甲恶唑(SMX)(76.70%)。CIP与SMX的加入对人工湿地的COD和TP去除效果没有显著影响(89.55%、86.53%和47.59%、50.39%,P>0.05)。抗生素对湿地植物细胞产生了一定程度的破坏,导致CW-A中植物的生物量相对CW中植物减少了20.63%;高通量测序结果表明,抗生素降低人工湿地中脱氮功能菌属Chlorobaculum、Zoogloea、Pseudomonas和Acinetobacter的相对丰度,并显著影响了CWA的TN去除效果,使其去除率(34.82%)显著低于CW(40.72%,P<0.05)。Aiming at the water environment safety problems caused by antibiotics,improving the water quality safety guarantee function of constructed wetland,the effect of antibiotics on the purification capacity of it was studied.Constructing the up-vertical flow constructed wetland added antibiotics(CW-A)and the control constructed wetland without antibiotics addition(CW),the removal characteristics of multiple antibiotics and their effects on pollutant removal,plant growth characteristics and microbial community composition of constructed wetland were studied.The results showed that the removal rate of ciprofloxacin(CIP)was 96.03%,significant higher than that of sulfamethoxazole(SMX)(76.70%).CIP and SMX had no significant effect on COD and TP removal in constructed wetland(89.55%,86.53%and 47.59%,50.39%,P>0.05).Antibiotics caused damage to plant cells,resulting in a 20.63%reduction in biomass of plants in CW-A compared with plants in CW.High-throughput sequencing results showed that antibiotics could reduce the relative abundance of Chlorobaculum,Zoogloea,Pseudomonas and Acinetobacter in constructed wetland,resulting in a significantly lower TN removal rate in CW-A(34.82%)compared to CW(40.72%,P<0.05).

关 键 词：人工湿地 磺胺甲恶唑 环丙沙星 植物 微生物群落 

分 类 号：X703[环境科学与工程—环境工程]