脉冲电絮凝处理含镉重金属废水  

Treatment of Cadmium-containing Heavy Metal Wastewater by Pulsed Electrocoagulation

作　　者：杨国超[1] 肖国光[1] 余侃萍[1] 邓景衡[1] 

机构地区：[1]长沙矿冶研究院有限责任公司,湖南长沙410012

出　　处：《矿冶工程》2012年第6期51-53,57,共4页Mining and Metallurgical Engineering

基　　金：国家科技重大专项资助课题(2010ZX07212-008)

摘　　要：采用脉冲电絮凝方法处理含镉重金属废水,考察了通电时间、pH值、离子强度、电流密度及占空比等因素对溶液中Cd2+去除效果的影响,并结合相应的计算公式核算了相应的电耗和铝板消耗。实验结果表明,在通电时间为60 min,电流密度为10 mA/cm2,电导率为7.8 ms/cm,占空比2.5,pH值7.82的条件下,Cd2+去除率达到了99.86%,电耗和铝板消耗分别为0.832 kWh/m3和100.7 g/m3。Heavy metal wastewater containing Cd2＋ was treated adopting pulse electrocoagulation,and the influences of power-on time,solution pH value,ionic strength,current density and duty ratio on the Cd2＋ removal efficiency were investigated,with consumptions of electricity and aluminum board calculated according to corresponding equations.The results show that,with power-on time of 60 min,current density of 10 mA/cm2,conductivity of 7.8 ms/cm,duty ratio of 2.5,and pH value of 7.82,the removal of Cd2＋ can reach 99.86%,with the consumptions of electricity and aluminum board of 0.832 kWh/m3 and 100.7 g/m3,respectively.

关 键 词：废水处理 脉冲电絮凝 含镉废水 去除率 

分 类 号：X703[环境科学与工程—环境工程]