微电解-电Fenton法处理乳化液中段废水  

Study on pretreatment of middle-stage emulsion wastewater by micro electrolysis and electro Fenton methods

作　　者：倪鑫鑫[1,2] 张明[1,2] 王占诚 王晓慧[1,2] 时朝辉 

机构地区：[1]上海市城市化生态过程与生态恢复重点实验室,上海200241 [2]华东师范大学生态与环境科学学院,上海200241

出　　处：《中国科技论文》2015年第12期1419-1423,1449,共6页China Sciencepaper

摘　　要：为探索有效预处理高浓度乳化液废水的方法,分别对微电解法、电Fenton法预处理乳化液中段废水进行单因素试验和正交试验研究,分析影响COD降解的各个因素,并对微电解-电Fenton法处理乳化液中段废水进行稳定性测试。结果表明:微电解反应的最佳条件为初始pH为3,Fe与C质量比为1∶1,反应时间为90min;电Fenton反应的最佳条件为pH为2,电流密度为40mA·cm-2,每L废水中H2O2投加量为50mL,反应时间为180min。采用微电解-电Fenton法处理乳化液中段废水,COD去除率最高可达80%以上,BOD5/COD可由0.24提升至0.78,可生化性提高,适合后续进行生化处理。To explore the effective pretreatment method of emulsion wastewater with high concentration,micro electrolysis and e-lectro Fenton methods was used to pre-treat the middle-stage emulsion wastewater and analyze various factors that influence the COD degradation by single factor and orthogonal experiments.Then,the stability of the micro electrolysis and electro Fenton methods was investigated.The results show that the best operation conditions of micro electrolysis technology are as follows：the initial pH value of micro electrolysis is 3,mass ratio of Fe/C is 1：1,the reaction time is 90 min;the pH value of electro Fenton is 2,the current density is 40 mA·cm-2 ,the dosage of H2 O2 is 50 mL·L-1 ,and the reaction time is 180 min.The maximum removal efficiency of COD can reach to 80% and the ratio of BOD5/COD can be raised from 0.24 to 0.78 under above conditions. The biodegradability of wastewater can be enhanced and the effluent is fitted for further biological treatment.

关 键 词：微电解 电 FENTON 降解 乳化液废水 

分 类 号：X703.1[环境科学与工程—环境工程]