海绵-浸没式MBR去除城市污水中磺胺类抗生素  

Removal and Degradation Mechanisms of Sulfonamide Antibiotics in Municipal Wastewater by Sponge-Submerged Membrane Bioreactor

作　　者：于志浩 Huu Hao NGO 张新波[1,2] 刘阳[1,2] 祁丽[1,2] 张丹[1,2] 纪冬丽 YU Zhi-hao;Huu Hao NGO;ZHANG Xin-bo;LIU Yang;QI Li;ZHANG Dan;JI Dong-li(Joint Research Centre for Protective Infrastructure Technology and Environmental Green Bioprocess,Tianjin Chengfian University,Tianjin 300384,China;Tianjin Key Laboratory of Aquatic Science and Technology,Tianjin Chengjian University,Tianjin 300384,China)

机构地区：[1]天津城建大学基础设施防护和环境绿色生物技术国际联合研究中心,天津300384 [2]天津城建大学天津市水质科学与技术重点实验室,天津300384

出　　处：《中国给水排水》2018年第19期90-95,共6页China Water & Wastewater

摘　　要：为提高城市污水中磺胺类抗生素(SAs)污染物的去除率,构建了海绵-浸没式膜生物反应器系统(SSMBR),并与传统的浸没式膜生物反应器(CSMBR)进行了对比,研究了两种工艺对SAs的去除性能和机制。结果表明,SSMBR对磺胺嘧啶(SDZ)和磺胺甲口恶唑(SMZ)的去除性能(去除率分别为92%、83%)优于CSMBR(去除率分别为76%、71%)。SAs的物料质量平衡计算结果表明,生物降解是去除SDZ和SMZ的最主要机制。此外,在SAs的压力下,胞外聚合物(EPS)中的多糖(PS)和蛋白质(PN)被富集,CSMBR中EPS含量高于SSMBR。16S rRNA高通量测序表明,SAs存在及降解会使菌群丰度和多样性明显降低,与此同时,海绵生物载体能促进与去除SAs相关的缓慢生长菌群的富集。An innovative aerobic submerged membrane bioreactor combined with biological sponge carrier system （SSMBR） was developed to study the removal and degradation mechanisms of sulfonamide antibiotics （SAs）, and compared with the conventional aerobic submerged membrane bioreactor （CSMBR）. The results indicated that SSMBR had removal rates of sulfadiazine （SDZ） and sulfamethox- azole （SMZ） at 92% and 83% , which were superior to those of CSMBR at 76% and 71% , respective- ly. Material balance calculations revealed that the biodegradation was the primary mechanism of SDZ and SMZ removal. Furthermore, the polysaecharide and protein in extracellular polymeric substances （EPS） were enriched under SAs pressure. The 16S rRNA sequencing showed that the bacterial community richness and diversity were significantly reduced under SAs pressure. Additionally, the biocarriers promoted the enrichment of the slow growing bacteria which were associated with the removal of SAs.

关 键 词：磺胺类抗生素 海绵生物载体 浸没式膜生物反应器 胞外聚合物 

分 类 号：TU992.3[建筑科学—市政工程]