Fenton法处理化学实验室有机废水  

Treatment of Chemical Laboratory Organic Wastewater by Fenton Process

作　　者：梁鸿霞[1] 李涛[1] LIANG Hongxia;LI Tao(Panzhihua University,Panzhihua 617000,Sichuan,China)

机构地区：[1]攀枝花学院,四川攀枝花617000

出　　处：《四川冶金》2023年第3期5-9,共5页Sichuan Metallurgy

基　　金：四川省高校重点实验室项目,项目名称:矿渣处理实验室废水的研究(项目编号:LZY1911)。

摘　　要：Fenton法具有氧化性强,操作便捷,反应迅速安全稳定等优点,对于高浓度有机废水有较好的实验效果。本文采用Fenton法对攀枝花学院化学实验室产生的有机废水进行处理,通过单因素实验,探讨了FeSO_(4)·7H_(2)O投加量、H_(2)O_(2)投加量、pH值、反应温度和反应时间等五个因素对有机废水COD去除率的影响。单因素实验结果表明:在pH值=3,H_(2)O_(2)投加量为2.0 mL/100mL,FeSO_(4)·7H_(2)O投加量为0.5 g/100mL,反应温度为50℃,反应时间为60 min,COD去除率达到最大为83%。在单因素的基础上,进行了正交实验,结果表明:四个影响因素对实验结果影响大小的顺序为:R2(pH)>R1(Fe^(2+)/H_(2)O_(2))>R4(反应时间)>R3(温度),四因素的最佳组合为:pH值=3,温度为50℃,Fe^(2+)/H_(2)O_(2)=1∶4(摩尔比),反应时间60 min。动力学分析得出该反应更加符合二级反应动力学。Fenton process has the advantages of strong oxidation,convenient operation,rapid reaction,safety and stability,and has a good experimental effect on high concentration organic wastewater.In this paper,Fenton method was used for the first time to treat the organic experimental wastewater actually produced by Panzhihua University.The influence of five influencing factors,such as FeSO_(4)•7H_(2) O dosage,H_(2) O_(2) dosage,temperature,pH value and reaction time,on COD removal rate was investigated.Single factor experiment and orthogonal experiment were carried out.The single factor experiment results show that the maximum COD removal rate is 83%at pH=3,H_(2) O_(2) dosage is 2.0 mL/100mL,FeSO_(4)•7H_(2) O_(2) dosage is 0.5 g,/100mL temperature is 50℃,reaction time is 60 min.Orthogonal experiments were conducted on the basis of single factor.The results showed that the order of influence of four factors on experimental results was R2(pH)>R1(Fe^(2+)/H_(2) O_(2))>R4(reaction time)>R3(temperature).The optimal combination of orthogonal experiment was as follows:pH=3,temperature 50℃,Fe^(2+)/H_(2) O_(2)=1∶4(molar ratio),reaction time 60 min.Kinetic analysis shows that the reaction is more in line with second-order kinetics.

关 键 词：化学实验室 有机废水 FENTON法 

分 类 号：X703.1[环境科学与工程—环境工程]