离子浮选法处理电镀废水实验研究  

Experimental study on treatment of electroplating wastewater with ion flotation

作　　者：戴文灿[1] 陈涛[1] 孙水裕[1] 刘如意[1] 

机构地区：[1]广东工业大学环境科学与工程学院,广州510006

出　　处：《环境工程学报》2010年第6期1349-1352,共4页Chinese Journal of Environmental Engineering

摘　　要：进行离子浮选法处理电镀废水的研究,对影响因素pH、CA∶CMe(摩尔比)、离子强度、浮选时间和通气量等进行了实验研究。实验结果表明:离子分离选择性递减顺序为:Cd2+>Zn2+>Fe2+>Cu2+>Ni2+。当CA∶CMe为2.5～3∶1,pH为8.5～9,离子强度不高于0.0001 mol/L时,离子浮选对镉、锌、铜、镍等金属离子均有很高的去除率,Cd2+、Zn2+、Fe2+、Ni2+、Cu2+残余浓度最低分别可达0.05、0.20、0.22、0.28和0.33 mg/L,处理后的电镀废水各污染物浓度均达到排放标准。泡沫产品中镉、锌、铜、镍品位分别达到3.2%、9.3%、18.1%和13.2%,具有极高的资源回收价值。In this study,ion flotation method was used to dispose the electroplating wastewater.The effects of pH value,the ratio of CA∶CMe,ion strength,flotation time,volume of aeration on the treatment of the electroplating wastewater were studied.Experimental results showed that the decreasing order to separate the ions was Cd^2＋Zn^2＋Fe^2＋Cu^2＋Ni^2＋.The preferential segregation for the cadmium,zinc,copper,nickel was that the ratio of CA∶CMe was 2.5～3.1,pH value was 8.5～9,and the ion strength was less than 0.0001 mol/L.In this case,the residual concentrations of the Cd^2＋,Zn^2＋,Fe^2＋,Ni^2＋ and Cu^2＋ were 0.05,0.20,0.22,0.28 and 0.33 mg/L,respectively.After electroplating wastewater were disposed,the pollutant concentration complied with the discharge standard.The concentrations of the chromium,copper and nickel in the disposal froth product were 3.2%,9.3%,18.1% and 13.2%,respectively,which showed that there was a great reclamation value.

关 键 词：电镀废水 离子浮选 重金属离子 资源回收 

分 类 号：X703[环境科学与工程—环境工程]