超声/臭氧组合工艺降解乐果农药废水的实验研究  

Experimental research on degradation of dimethoate pesticide wastewater by ultrasonic/ozone combined process

作　　者：王利平[1] 汪亚奇[1] 蔡华[1] 陈毅忠[1] 

机构地区：[1]常州大学环境与安全工程学院,常州213164

出　　处：《环境工程学报》2010年第12期2807-2810,共4页Chinese Journal of Environmental Engineering

基　　金：常州市社会科技发展计划项目(CS20090008)

摘　　要：采用超声波(US)/臭氧(O3)组合工艺降解乐果农药废水,考察了pH值、O3流量、反应时间、COD浓度对处理效果的影响。结果表明,采用变频、低功率(40 W)的US设备与O3组合使用,其处理效果比单独US和O3的处理效果好,二者具有明显的协同作用;通过模拟乐果农药废水确定实验参数,考察组合工艺对实际废水的处理效果,优化工艺参数并得出最佳的实验条件:处理水量为5 L、pH3、O3流量5.20 mg/L、反应时间150 min、废水初始COD浓度4 000 mg/L,COD去除率为29.06%,B/C比由0.20提高至0.35。这表明:在较低能耗和较短时间内,该组合工艺对农药废水具有良好的预处理效果,利于后续好氧生化处理。Ultrasonic（US） and ozone（O3） combined process was used in this study to degrade dimethoate pesticide wastewater.The effects of pH value,O3 flow,reaction time and initial concentration on the treatment efficiency were investigated.The results showed that the treatment efficiency of US（frequency conversion,40 W）/O3combined process was higher than single US or O3,and they had obvious synergistic effect.Simulated dimethoate pesticide wastewater was studied first to determine process parameters,then treatment effect of real wastewater was studied and the process parameters were optimized.The best conditions were water yield 5 L,pH 3,O3 flow 5.20 mg/L,reaction time 150 min,initial COD 4 000 mg/L,as the consequences,the COD removal rate was 29.06%,B/C rate increased from 0.20 to 0.35.The results showed that pesticide wastewater could be degraded effectively with lower energy consumption and shorter reaction time,and then it was beneficial to the subsequent aerobic biochemical treatment process.

关 键 词：超声波 臭氧 乐果农药废水 

分 类 号：X703.1[环境科学与工程—环境工程]