摘要
N,N-二甲基甲酰胺(DMF)作为一种万能溶剂在工业中被广泛应用,但它有毒性、难以生物降解。本文采用Fenton法处理DMF模拟废水,考察了pH、反应时间、氧化剂投加量等条件对处理效果的影响,同时探讨了Cl-和SO2-4对反应的影响。研究结果表明:处理1g/L的DMF模拟废水,最佳反应条件为:w=30%H_2O_(2)的投加量为40mL/L,pH=2.0,n(H_2O_(2))∶n(Fe2+)=3∶1,反应时间2.5h,在该条件下出水化学需氧量(COD)小于100 mg/L;Cl-对Fenton法处理DMF废水有着十分强的抑制作用,1g/L就会使出水COD由90mg/L上升到250mg/L;而SO2-4对Fenton反应的处理效果影响很小,当ρSO2-4>10g/L时有一定的促进作用。
N,N-Dimethylformamide(DMF)is a universal organic solvent in industry,while it is toxic and non-biodegradable.In this paper,Fenton oxidation was used to treat model DMF wastewater and the influence of pH,reaction time,dose of oxidation agent,as well as the effect of inorganic anions Cl-and SO42-were investigated.The experimental results showed that the optimum conditions with effluent COD<100mg/L were as follows:when the concentration of DMF was 1g/L,the dosage of 30%H_2O_(2)was40mL/L,pH=2.0,n(H_2O_(2))∶n(Fe2+)=3∶1,reacting time is 2.5h.Meanwhile,Cl-had a strong inhibition effect on Fenton oxidation:the COD of effluent increased from 90mg/L to 250mg/L with 1g/L Cl-.The effect of SO42-on the reaction was very small:with a concentration higher than 10g/L,it could accelerate the reaction to some extent.
作者
邬莎娜
孙贤波
刘勇弟
顾雍
陈强
陈颖
WU Sha-na;SUN Xian-bo;LIU Yong-di;GU Yong;CHEN Qiang;CHEN Ying(School of Resource and Environmental Engineering,State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process,East China University of Science and Technology,Shanghai 200237,China)
出处
《华东理工大学学报(自然科学版)》
CAS
CSCD
北大核心
2017年第1期70-75,共6页
Journal of East China University of Science and Technology
