水生植物滤床深度处理养殖废水过程中抗生素与抗性基因的响应研究  

Removal and response of antibiotics and antibiotic resistance genes during advanced treatment of livestock wastewater by aquatic plant filter bed

作　　者：廖杰[1] 徐熙安 刘玉洪[2] 李瑞兴[2] 刘琳[2] 刘超翔[2] 

机构地区：[1]厦门理工学院,厦门361024 [2]中国科学院城市环境研究所,厦门361021

出　　处：《环境科学学报》2015年第8期2464-2470,共7页Acta Scientiae Circumstantiae

基　　金：福建省教育厅B类项目(No.JB13157);厦门市科技计划项目(No.3502Z20130039;3502Z20142018);福建省科技重大专题(No.2013YZ0001-1-2);教育部留学回国人员科研启动基金资助项目~~

摘　　要：以水生植物滤床为载体,研究了典型抗生素（四环素类TCs、磺胺类SMs和喹诺酮类QNs）和抗生素抗性基因在不同水生蔬菜种植的水生植物滤床中的去除和累积情况,并考察了季节变化对此过程的作用影响.通过比较不同植物种植系统中抗生素的去除效率发现,在夏季水芹系统对抗生素的去除效率分别为71.83%（TCs）、46.80%（SMs）和21.53%（QNs）,明显高于空心菜系统（TCs 33.28%、SMs 19.73%、QNs 6.84%）,但在冬季运行情况下两组水生植物滤床对抗生素的去除效率差异不显著.总体而言,这3类抗生素在植物中的累积规律是茎部〉叶子,其中,在夏季运行情况下,3类抗生素在空心菜茎部具有明显较高的累积含量（22.89-103.7μg·g^-1,以干重计,下同）,而在冬季3类抗生素在水芹叶片中具有明显较高的累积含量（3.52-7.33μg·g^-1）.同时,在不同季节,系统出水与底泥中抗性基因水平对植物种类变化的响应趋势一致.This study focused on the removal and accumulation of three typical antibiotics（ TCs,SMs and QNs） and the response of antibiotic resistance genes in aquatic plant filter beds planted with water celery and water spinach individually. The effects of season variation on the process were also investigated. The results revealed that the removal rates of antibiotics in water celery- planting aquatic system in summer were 71. 83%（ TCs）,46. 80%（ SMs） and 21. 53%（ QNs）,which were much higher than those in the water spinach- planting aquatic system,with 33. 28%（ TCs）,19. 73%（ SMs）and 6. 84%（ QNs）,respectively. In winter,no significant difference was observed regarding antibiotics removal between the two systems. In general,all three antibiotics accumulated in stems were much higher than in leaves for the two plants. In summer the stems of water spinach assimilated higher concentrations of antibiotics（ 22. 89 - 103. 70 μg·g^- 1（ dw）） than water celery,whereas in winter the leaves of water celery assimilated more antibiotics（ 3. 52 ~ 7. 33 μg·g- 1（ dw）） than water spinach. Meanwhile,a similar trend has shown between the ARGs distribution in sediment and effluent in different plant species regardless of seasons.

关 键 词：水生植物滤床 水生蔬菜 养殖废水 抗生素 抗生素抗性基因 

分 类 号：X703.1[环境科学与工程—环境工程]