布洛芬和双氯芬酸在不同构型人工湿地中的去除行为研究  

Removal Behavior of Ibuprofen and Diclofenac in Different Constructed Wetlands

作　　者：景瑞瑛[1] 杨扬[1,2] 戴玉女[1] 万翔[1] 邰义萍[1] 樊静静[1] 

机构地区：[1]暨南大学生命科学技术学院,水生生物研究中心,广州510632 [2]热带亚热带水生态工程教育部工程研究中心,广州510632

出　　处：《环境科学》2016年第7期2577-2585,共9页Environmental Science

基　　金：国家“十二五”科技支撑计划项目(2012BAJ21B07)

摘　　要：在酸性药物中选取常用的布洛芬和双氯芬酸为典型对象,研究其在人工湿地中的去除行为,探讨不同工艺、有无植物、不同季节对其去除效果的影响.结果表明,工艺因素对二者的去除存在显著影响.其中,布洛芬在水平潜流和垂直潜流湿地中的平均去除率(分别为69%和60%)显著高于表面流湿地(26%),而双氯芬酸在表面流湿地中的平均去除率(58%)则显著高于水平潜流和垂直潜流湿地(分别为49%和43%).植物的存在可以显著提高布洛芬的去除率,对双氯芬酸的去除则无显著影响.配对样品t检验发现两种药物在夏季与秋季的去除效率无显著差异.双氯芬酸的去除效率与DO值、COD的去除效率呈极显著负相关,而布洛芬的去除效率与基质中好氧脱氢酶活性具有较好的正相关性,可能表明,布洛芬在湿地中主要通过好氧降解去除,双氯芬酸在湿地中的主要去除途径为光降解和厌氧降解.Ibuprofen and diclofenac,two commonly used pharmaceuticals,were studied to evaluate the removal behavior of acid pharmaceuticals in constructed wetlands（ CWs） with different flow types,vegetation and seasons. It was shown that flow types influenced the results significantly. The average removal efficiency of ibuprofen in horizontal subsurface flow（ HSSF） and vertical subsurface flow（ VSSF） CWs（ 69% and 60%,respectively） was significantly higher than that in surface flow（ SF） CWs（ 26%）.For diclofenac,SF CWs（ 58%） was significantly higher than HSSF and VSSF CWs（ 49% and 43%,respectively）. In addition,the presence of plants improved the efficiency of ibuprofen,while it had no significant influence on the removal of diclofenac. Paired t-test found out that summer and autumn season variety had little impact on the removal. Furthermore,the removal of diclofenac and DO,as well as COD,showed very significant negative correlations. Opposite to diclofenac,the removal of ibuprofen had good positive correlations with dehydrogenase activities. The research indicated that aerobic biodegradation behavior mainly took place in ibuprofen,yet anaerobic biodegradation and photolysis behavior were expected for diclofenac.

关 键 词：人工湿地 布洛芬 双氯芬酸 生物降解 光降解 

分 类 号：X703[环境科学与工程—环境工程]