单阳膜氧化降解乐果废水及动力学分析  

STUDY ON THE DEGRADATION OF DIMETHOATE WASTEWATER BY SINGLE ANODE-MEMBRANE OXIDATION AND KINETICS ANALYSIS

作　　者：王兆崴[1] 薛建军[1] 孔令国[1] 凌世盛[1] 杨慧[1] 黄明喜[1] 

机构地区：[1]南京航空航天大学材料科学与技术学院,江苏南京211106

出　　处：《水处理技术》2010年第12期26-29,共4页Technology of Water Treatment

基　　金："十一五"国家科技支撑计划(2006BAD04A12)

摘　　要：针对乐果废水COD高、污染严重、可生化性差的特点,研究了单阳膜技术氧化降解乐果废水的效果。研究结果表明,采用单阳膜技术氧化降解乐果废水,COD去除率较高。在本试验条件下,乐果模拟废水的COD去除率受电解时间、操作电压、NaCl导电介质浓度及超声辅助的影响。通过试验确定的最佳试验条件为:操作电压9 V、电解时间50 min、NaCl质量浓度5 g.L-1、超声辅助处理。采用以上条件处理乐果模拟废水,COD去除率达79.87%。反应动力学分析发现,乐果模拟废水的降解反应符合2级动力学,反应动力学方程为Ct=C0/[1×10^(-5)C0t]+1。According to the disadvantages of dimethoate wastewater such as high COD value,serious pollution and poor biodegradability,the effect of its degradation by single anode-membrane oxidation was studied.The results indicated that the COD removal efficiency was high.Under present experimental conditions,the COD removal efficiency was affected by electrolysis time,operating voltage,the concentration of conducting medium NaCl and the assistance of ultrasonic treatment.The best experimental parameters determined through this study were： operating voltage 9 V,NaCl concentration 5 g·L-1,ultrasonic treatment applied simultaneously.Under such experimental conditions the COD removal efficiency reached as high as 79.87%.With the results of kinetics study,it was found that the degradation reaction of the dimethoate wastewater accorded with secondary kinetics,and the kinetic equation was Ct=C0/[1×10^（-5）C0t]＋1.

关 键 词：乐果模拟废水 单阳膜技术 氧化降解 动力学 

分 类 号：X786[环境科学与工程—环境工程] TQ028.8[化学工程]