Fe^0-Na_2S_2O_8去除畜禽废水中磺胺二甲基嘧啶研究  

Study on the Removal of Sulfamethazine in Swine Wastewater by Fe^0-Na_2S_2O_8 System

作　　者：卢建 邵子纯 夏文君 陈家斌[1] 黄天寅[1] LU Jian;SHAO Zichun;XIA Wenjun;CHEN Jiabin;HUANG Tianyin(School of Environmental Science and Engineering,Suzhou University of Science and Technology,Suzhou 210059,China)

机构地区：[1]苏州科技大学环境科学与工程学院,江苏苏州215009

出　　处：《水处理技术》2019年第5期42-46,共5页Technology of Water Treatment

基　　金：国家自然科学基金项目(51509175);苏州市民生科技项目(SS201666)

摘　　要：研究通过添加微米零价铁(μZVI)催化过硫酸钠(PS)产生大量硫酸根自由基(SO_4·^-),以快速降解畜禽废水中磺胺二甲基嘧啶(SM2)。考察了不同粒径、μZVI投加量、PS含量、初始pH、反应温度对SM2降解效果的影响。结果表明,一定范围内,随着ZVI的粒径变小,μZVI投加量和PS含量的提高,SM2的降解效果有所增大。在μZVI-PS体系中,当μZVI投加量为0.25 g/L、PS浓度为7.5 mmol/L、SM2浓度为50μmol/L,反应30min后,SM2完全降解。其中初始pH及反应温度对SM2的降解有较大影响,当pH=5、温度45℃时SM2的降解效果为佳。μZVIPS体系在去除畜禽废水中SM2的同时,对畜禽废水中COD也具有良好的去除效果。The addition of micron zero-valent iron(μZVI) can effectively catalyze the sodium persulfate(PS) to produce large amounts of sulfate radicals(SO4·^-) and achieve rapid degradation of sulfamethazine(SM2). The effects of different particle sizes,μZVI dosage, PS content, initial pH, and reaction temperature on the degradation of SM2 were evaluated. The results showed that within a certain range, as the particle size of ZVI became thinner, the dosage of μZVI and the content of PS increased, and the degradation effect of SM2 increased. In μZVI-PS system, the removal rate of SM2 could reach100% after 30 min with 0.25 g/L of μZVI dosage, concentration of PS and SM2 was 7.5 mmol/L and 50 μmol/L respectively. The initial p H and temperature had significant effect on the SM2 removal, when pH was 5 and temperature was 45 ℃, the degradation effect of SM2 was the best. In the removal of SM2 by μZVI-PS system in swine wastewater, meanwhile the system has good effect for COD removal in swine wastewater.

关 键 词：畜禽废水 高级氧化 零价铁 磺胺二甲基嘧啶 

分 类 号：X713[环境科学与工程—环境工程]