铁碳微电解技术预处理抗生素制药废水的研究  

Study on the Application of Iron-carbon Micro-electrolysis in Antibiotic Wastewater Treatment

作　　者：张啸跃 闻帅 张海艳 宗晨露 闫睿铭 陈建秋 程广焕 ZHANG Xiaoyue;WEN Shuai;ZHANG Haiyan;ZONG Chenlu;YAN Ruiming;CHEN Jianqiu;CHENG Guanghuan(School of Engineering,China Pharmaceutical University,Nanjing 211100,China;Key Laboratory of Environment Remediation and Ecological Health of Ministry of Education,College of Environment and Resource,Zhejiang University,Hangzhou 310058,China)

机构地区：[1]中国药科大学工学院,江苏南京211100 [2]浙江大学环境与资源学院,污染环境修复与生态健康教育部重点实验室,浙江杭州310058

出　　处：《环境科学与技术》2021年第10期144-151,共8页Environmental Science & Technology

基　　金：江苏省科技计划-青年项目(BK20190568);中国药科大学大学生创新项目(202010316253,202110316187);浙江省水污染控制与环境安全重点实验室开放课题(2018ZJSHKF02)。

摘　　要：文章以磺胺甲恶唑(SMX)和诺氟沙星(NOR)溶液模拟废水研究铁碳微电解技术对抗生素废水的降解效果。通过单因素实验和正交实验结合的方式确定铁碳微电解对2种抗生素的最佳降解条件,并考察最优条件下抗生素的降解动力学。结果表明:铁碳投加量对2种废水降解的影响最大;浓度为100 mg/L的SMX废水在初始pH值为4,铁碳比为1∶1,铁碳投加量为12 g/L的条件下降解效果最佳,降解率为41%;浓度为200 mg/L的NOR废水在初始pH值为3,铁碳比为1∶2,铁碳投加量为6 g/L的条件下降解效果最佳,降解率为54%。动力学研究中,一级动力学拟合相似度R2均在0.99左右,故微电解技术处理2种抗生素废水反应过程遵循一级反应动力学模型。Sulfamethoxazole(SMX) and norfloxacin(NOR) solution simulated wastewater were used to study the removal efficiency of iron-carbon micro-electrolysis on antibiotic wastewater. By combining single factor and orthogonal experiment,the optimal degradation conditions of the two antibiotics by iron-carbon micro-electrolysis were determined, and the degradation kinetics of antibiotics under the optimal conditions were investigated. The results showed that the iron-carbon dosage had the greatest effect on the degradation of the two kinds of wastewater. And the removal rate of the SMX wastewater(100 mg/L) was the best when the initial p H value was 4, the iron-carbon ratio was 1∶1 and the iron-carbon dosage was12 g/L, with 41% removal rate. And the removal rate of the NOR wastewater(200 mg/L) was the best when the initial pH value is 3, the iron-carbon ratio is 1∶2 and the iron-carbon dosage was 6 g/L, with 54% removal rate. Besides, the degradation kinetic curves were fitted well by first-order kinetic with R2≈0.99, so the reaction process of micro-electrolysis technology to treat two kinds of antibiotic wastewater followed the first-order reaction kinetic model.

关 键 词：磺胺甲恶唑 诺氟沙星 铁碳微电解 条件优化 降解动力学 

分 类 号：X703[环境科学与工程—环境工程]