可见光响应的光催化生物降解直接耦合降解四环素  

Degradation of tetracycline by directly-coupling process of visible light responded photocatalysis and biodegradation

作　　者：鞠然 郭海欣 周丹丹[2] Ju Ran;Guo Haixin;Zhou Dandan(CNCEC Environmental Protection Co. ,Ltd. ,Beijing 100007, China;Jilin EngineeringLabfor Water Pollution Control and Resources Recovery,Northeast Normal University, Changchun 130117, China)

机构地区：[1]中化工程集团环保有限公司,北京100007 [2]吉林省水污染控制与资源化工程实验室东北师范大学,吉林长春130117

出　　处：《工业水处理》2018年第5期62-67,共6页Industrial Water Treatment

摘　　要：考察了典型的抗生素———盐酸四环素(TCH)在光催化生物降解直接耦合体系中的降解行为,重点研究了生物膜在直接耦合体系中的响应行为和关键作用。研究结果表明,单独的生物降解不能去除TCH;与单独的光催化相比,直接耦合体系对TCH和溶解性COD(SCOD)的去除率分别提高了3%和17%。直接耦合(VPCB)体系中生物膜通过利用TCH光催化中间产物存活下来,并且通过Methylibium、Runella、Comamonas、Pseudomonas等与TCH和芳香烃降解相关菌属的富集来适应环境胁迫,同时生物膜群落结构的演替会对VPCB中TCH的降解途径产生明显的影响。The degradation behavior of the typical antibiotics-tetracycline（TCH） in the direct-coupling system has been investigated,and the response behavior and key effect of bio-films in the direct-coupling system studied emphatically. The results show that TCH cannot be removed by biological degradation only. Compared with single photocatalysis,the removing rates of TCH and soluble COD（SCOD） by the direct-coupling system are increased by 3% and17%,respectively. The biofilm in VPCB keeps survival by making use of TCH photocatalysis intermediate products,and adapts environmental stress through the enrichment of bacteria genus related to the degradation of Methylibium,Runella,Comamonas,Pseudomonas,etc. In addition,the succession of biofilm community structure can have obvious influence on the degradation route of TCH in VPCB.

关 键 词：光催化氧化 生物降解 直接耦合 盐酸四环素 

分 类 号：X703[环境科学与工程—环境工程]