摘要
采用电絮凝和超声-电絮凝处理吡啶农药废水,探讨影响结果的各种因素。电絮凝反应的最佳条件为:电解时间60min,电极间距3cm,电流密度20m A/cm^2,在此条件下,废水的CODCr、色度去除率分别达到37.06%、51.54%,反应过程符合二级反应动力学规律。在此条件下同时增加超声处理,得到CODCr、色度的去除率为65.20%、74.10%。相比单独电絮凝处效果有了很大的提高。而超声-电絮凝降解动力学过程符合一级反应动力学规律。
Using electrocoagulation and ultrasonic electrocoagulation to treatment the pyridine pesticide wastewater and explore the factors that influence the results. The optimum conditions for the electrocoagulation reaction were,electrolysis time was 60 min,electrode spacing was 3 cm,current density was 20 mA/cm^2. Under this condition,the CODCrand chroma removal rate of wastewater can reach 37. 06% and 51. 54%,respectively,and the degradation of CODCr fit the second-order reaction kinetics.Under such conditions,we increased the process of ultrasonic processing,and found that the removal rate of CODCrand chroma was 65. 20% and 74. 10%. Compared with electrocoagulation,the effect has been greatly improved. The kinetics of ultrasonicelectrocoagulation degradation fit the first-order reaction kinetics.
作者
杨龙
董海山
曾祥贵
尹智聪
YANG Long;DONG Hai-shan;ZENG Xlang-gui;YIN Zhi-cong(Faculty of Geosciences ＆ Environmental Engineering,Southwest Jiaotong University,Chengdu 611756,China;Deyang Environmental Monitoring Center Station,Deyang,Sichuan 618000,China)
出处
《四川环境》
2018年第3期11-16,共6页
Sichuan Environment
关键词
电絮凝
超声
吡啶农药废水
动力学分析
Electrocoagulation process
ultrasonic process
pyridine pesticide wastewater
kinetic analysis
