摘要
通过初始pH值、Fe2+添加量、质量分数为30%的H2O2溶液添加量和反应时间等条件的单因素影响实验及响应面实验,优化了电Fenton法处理混菌发酵柠檬酸废水的工艺。得到了优化后的处理工艺:初始pH值为3.6,Fe2+添加量为245 mg/mL,H2O2添加量为1.1 mg/mL,反应时间为145 min。在此优化工艺条件下,化学需氧量(COD)去除率达96.67%。本研究建立的方法可反映各种因素对混菌发酵柠檬酸废水的COD去除率的影响。
The process of treating citric acid wastewater from mixed bacteria fermentation by electric Fenton method was optimized through the single factor test and response surface test on the effects of initial pH value,Fe2+content,H2O2(mass fraction 30%)content and reaction time.The optimal process was as follows:initial pH as 3.6,Fe2+content as 245 mg/mL,H2O2 content as 1.1 mg/mL,reaction time as 145 min.Under the optimum conditions,the removal ratio of chemical oxygen demand(COD)was 96.67%.The method established in this study can reflect the influence of various factors on COD removal ratio of citric acid wastewater from mixed bacteria fermentation.
作者
孙科
王萌
SUN Ke;WANG Meng(Xuzhou engineering vocational and technical College Department of Bioengineering,Xuzhou 221006,China)
出处
《化学反应工程与工艺》
CAS
北大核心
2020年第4期371-378,共8页
Chemical Reaction Engineering and Technology
基金
徐州市科技计划项目(KC20051)
江苏高校“青蓝工程”资助基金项目(JS1111)。
关键词
混菌发酵
柠檬酸废水
响应面
化学需氧量
mixed bacteria fermentation
citric acid wastewater
response surface method
chemical oxygen demand
