无植物生物滞留池去除生活污水中典型抗生素及其效能强化  

Removals of typical antibiotics in sewage by unplanted bioretention cells:Efficiency and its enhancement

作　　者：许妍[1] 席慕华 耿冲冲 徐磊[1] 刘哲铭 傅大放[1] 王亚军[2] Xu Yan;Xi Muhua;Geng Chongchong;Xu Lei;Liu Zheming;Fu Dafang;Wang Yajun(School of Civil Engineering,Southeast University,Nanjing 210096,China;School of Civil Engineering,Lanzhou University of Technology,Lanzhou 730050,China)

机构地区：[1]东南大学土木工程学院,南京210096 [2]兰州理工大学土木工程学院,兰州730050

出　　处：《东南大学学报（自然科学版）》2020年第4期748-759,共12页Journal of Southeast University：Natural Science Edition

基　　金：国家自然科学基金资助项目(41671468,41967043);江苏省自然科学基金资助项目(BK 20171356);中国科学院科技服务网络计划(STS)区域重点资助项目(KFJ-STS-QYZX-051);国家重点研发计划“合成生物学”重点专项资助项目(2018YFA0901200);江苏高校“青蓝工程”资助项目。

摘　　要：传统生物滞留池氮磷去除效果差,对抗生素等新兴污染物的去除效能尚不清晰,通过添加活性炭层、铁粒构建微生物燃料电池改进生物滞留池,考察了其对化学需氧量(COD)、氨氮(NH4^+-N)、总氮(TN)、总磷(TP)、磺胺甲恶唑(SMX)、四环素(TC)的去除效能.结果表明,较常规生物滞留池,强化型生物滞留池对TP的去除率提高了20%,稳定运行105 d且无释磷现象;在进水投加0.8 mg/L抗生素(SMX/TC)的条件下,强化型生物滞留池对SMX和TC的去除率分别为99.62%和99.67%,较常规生物滞留池分别提高了67.66%和35.24%;投加SMX/TC并未对强化型生物滞留池COD、TP的去除产生抗生素胁迫,且对TN和NH4^+-N的去除产生显著性促进作用,去除率分别提高了29.47%和26.09%.Traditional bioretention cells exhibt less effective removals of nitrogen and phosphorous.Also,the performance of bioretention cells on emerging pollutants,such as antibiotics,has not been comprehensively examined.A modified bioretention cell was constructed by introducing activated carbon layers andiron scraps to form a microbial fuel cell.The performance of the traditional and the modified bioretention cells was evaluated by analyzing effluent chemical oxygen demand(COD),total nitrogen(TN),total phosphorus(TP),ammonia(NH4^+-N)as well as sulfamethoxazole(SMX)and tetracycline(TC).The results show that the modified bioretention cells improve the removal efficiency of TP by 20%and has been running stably for 105 d without apparent phosphorus release.With the loading of 0.8 mg/L antibiotic(SMX/TC),the removal efficiencies of SMX and TC in the modified bioretention cells reach 99.62%and 99.67%,respectively.Compared with the traditional bioretention cells,SMX and TC removals in the modified bioretention cells increase by 67.66%and 35.24%,respectively.Meanwhile,the removals of COD and TP are not negatively affected by the antibiotics(SMX/TC)loading in the modified bioretention cells.Notably,the exposure of low levels of antibiotics(0.8 mg/L)significantly improves the removals of TN and NH4^+-N in the modified bioretention cells.The removal efficiencies increase by 29.47%and 26.09%,respectively.

关 键 词：生物滞留池 磺胺甲恶唑 四环素 

分 类 号：X703[环境科学与工程—环境工程]