UV/H_2O_2降解磺胺甲恶唑和环丙沙星的对比研究  

Comparative Study on Degradation of Sulfamethoxazole and Ciprofloxacin in UV/H_2O_2 Process

作　　者：杨海燕[1] 贾九敏 郭金鹏[1] 

机构地区：[1]北京建筑大学城市雨水系统与水环境省部共建教育部重点实验室,北京100044

出　　处：《中国给水排水》2016年第13期82-86,共5页China Water & Wastewater

基　　金：北京市属高等学校高层次人才引进与培养计划项目(PXM2013-2015_014210_000167);城市雨水系统与水环境省部共建教育部重点实验室研究基金资助课题

摘　　要：采用UV/H_2O_2工艺降解磺胺甲恶唑(SMX)和环丙沙星(CIP),研究了H_2O_2投加量、反应溶液初始pH值对SMX和CIP降解效果的影响,测定了UV/H_2O_2降解SMX和CIP过程中对TOC的去除情况。结果表明,UV/H_2O_2对SMX和CIP具有较好的去除效果,UV/H_2O_2对CIP的降解效果好于对SMX的降解效果;反应溶液初始pH值分别为3和7时,UV/H_2O_2对SMX和CIP的降解效果最好;在UV/H_2O_2对SMX的降解过程中,TOC的去除率均随着反应溶液初始pH值的升高而降低,在UV/H_2O_2对CIP的降解过程中,反应溶液初始pH值对TOC的去除率无明显影响。从分子结构角度分析可知,SMX的异恶唑环N-O键和磺酰胺键的变化难于CIP中脱氟作用和哌嗪环的转化。The UV/H2O2 process was used to degrade sulfamethoxazole （SMX） and ciprofloxacin （CIP）. The effect of different H2O2 dosages and initial pH values on the degradation of SMX and CIP was investigated, and the removal of TOC was evaluated. The results indicated that SMX and CIP could be efficiently degraded in UV/H2O2 process. The degradation efficiency of CIP was higher than that of SMX in UV/H2O2 process. The optimal pH values of the reaction solution in the degradation of SMX and CIP were 3 and 7 respectively. In the degradation of SMX, the removal rate of TOC decreased with the increase of pH values. In the degradation of CIP, the pH value had no significant effect on the removal of TOC. From the perspective of molecular structure, the transformation of sulfonamide bond and oxazole ring N - O bond in SMX was more difficult than the transformation of defluorination and piperazine ring in CIP.

关 键 词：UV/H2 O2 磺胺甲恶唑 环丙沙星 

分 类 号：X703[环境科学与工程—环境工程]