阳膜电解法处理含镍废水

Treatment of Nickel-Containing Wastewater by Electrolysis Process with Cationic Exchange Membrane

采用阳膜电解法处理低浓度含镍废水。考察了电解质种类及其加入量、电解电流、电流密度、搅拌转速、电解温度和电解时间等对电解效果的影响。实验结果表明,在电解质NaCl加入量为2.5 g/L、电解电流为0.10A、电流密度为150 A/m^2、搅拌转速为800 r/min、电解温度为35℃、电解时间为8 h的最佳条件下,处理Ni2+质量浓度为2 g/L的含镍废水,镍析出率达到95.16%,电流效率为86.87%,单位质量能耗为5 254 k W·h/t。

The wastewater containing nickel with low-concentration was treated by electrolysis process with cationic exchange membrane. The factors affecting the electrolysis effect were studied. The experimental results show that under the optimum conditions of NaCl dosage 2.5 g/L,electrolytic current 0.10 A,current density 150 A/m^2,stirring speed 800 r/min,electrolysis temperature 35 ℃,electrolysis time 8 h and Ni^2＋ mass concentration 2 g/L,the generation rate of nickel reaches 95.16%,the current efficiency is 86.87% and the unit energy consumption is 5 254 kW·h/t.