4种水生植物对兽用抗生素去除效果比较  

Removal effects of four aquatic plants on veterinary antibiotics

作　　者：周品成 刘希强[2] 康兴生 林云琴[1] 王德汉[1] 崔理华[1] ZHOU Pincheng;LIU Xiqiang;KANG Xingsheng;LIN Yunqin;WANG Dehan;CUI Lihua(College of Natural Resources and Environment,South China Agricultural University,Guangzhou 510642,China;Beijing Sounds Environmental Engineering Co.,Ltd.,Beijing 101102,China;Shandong academy of Environmental Sciences Co.,Ltd.,Ji’nan 250013,China)

机构地区：[1]华南农业大学资源环境学院,广东广州510642 [2]北京桑德环境工程有限公司,北京101102 [3]山东省环境保护科学研究设计院有限公司,山东济南250013

出　　处：《华南农业大学学报》2019年第6期67-73,共7页Journal of South China Agricultural University

基　　金：国家自然科学基金(4187070528,51708229);广东省水利科技创新项目(2015-15)

摘　　要：【目的】降低生活污水和畜禽养殖废水中兽药抗生素残留污染,为植物修复和人工湿地筛选较优去除兽用抗生素植物。【方法】选择4种常见水生植物(皇竹草Pennisetum hydridum、风车草Cyperus alternifolius、美人蕉Canna indica和梭鱼草Pontderia cordata)和3种常用兽药抗生素(阿莫西林、氟苯尼考和盐酸多西环素)构建水培试验体系,研究不同水生植物对水体环境中抗生素耐受性及去除效果。【结果】水培14 d后,4种供试植物对水体环境中的3种抗生素都有一定的去除能力,并且表现出抗生素低、中质量浓度(0~100μg/L)对植株株高和叶绿素含量具有促进作用,均高于对照;高质量浓度(大于100μg/L)则抑制生长,植株株高和叶绿素含量显著小于对照处理。100μg/L抗生素胁迫14 d后,各植株的去除效率最高,其中,对阿莫西林、氟苯尼考和盐酸多西环素去除效率最好的供试植物种类分别为皇竹草、美人蕉和美人蕉,去除效率分别为55.0%、56.2%和48.3%。【结论】在去除水体环境中的兽用抗生素时,本研究中4类植物对抗生素去除效率为美人蕉>皇竹草>梭鱼草、风车草。【Objective】To reduce veterinary antibiotic residues in domestic sewage and livestock breeding wastewater,and screen aquatic plants which can better remove veterinary antibiotics in water for plant restoration and artificial wetland.【Method】Four commonly used aquatic plants(Pennisetum hydridum,Cyperus alternifolius,Canna indica and Pontderia cordata)and three kinds of commonly used veterinary antibiotics(amoxicillin,florfenicol and doxycycline hydrochloride)were selected to construct the hydroponic experiment system for evaluating the tolerance and removal efficiency of antibiotics in water.【Result】Four different aquatic plant species had a certain efficiency on removing the selected veterinary antibiotics after 14 days of hydroponic culture.Three kinds of antibiotics had a positive effect on increasing plant height and chlorophyll content at low and medium concentrations of 0-100 mg/L,and inhibited plant growth and decreased chlorophyll content at high concentration above 100 mg/L.Besides,there was significant difference between the treatment groups and the control group.The highest removal efficiency was observed for each plant at 14 days after 100 mg/L antibiotics stress treatment.P.hydridum,C.indica and C.indica were the best selected plants to remove amoxicillin,florfenicol,and doxycycline hydrochloride respectively,and the removal rates were 55.0%,56.2%and 48.3%respectively.【Conclusion】The efficiency of four kinds of plants to remove veterinary antibiotics in water was in order of C.plantsiana>P.hydridum>P.cordata=C.alternifolius.

关 键 词：水生植物 兽用抗生素 叶绿素含量 株高 去除率 耐受性 

分 类 号：X52[环境科学与工程—环境工程]