常温中和铁氧体法处理低浓度含镍废水的研究

Treatment of low concentration nickel wastewater by room temperature ferrite process

实验研究了常温中和铁氧体法处理低浓度镍盐生产废水的工艺条件。试验结果表明,以Na2CO3为pH调节剂,在pH8.5～9.0,室温,n(Fe3+)∶n(Fe2+)=1.5∶1,n(Fe2+)∶n(Ni2+)=12∶1,搅拌时间为15min的条件下,处理效果最佳。镍的去除率达到98%以上,处理后的废水中Ni2+质量浓度达到0.20mg/L以下,达到国家排放标准。

The experiment has studied and determined the best treatment conditions of low concentration nickel salt wastewater, n （ Fe^3＋ ） ：n （ Fe^2＋ ） = 1.5：1, n （ Fe^2＋ ） ：n （ Ni^2＋ ） = 12：1, room temperature, pH 8.5-9.0, Na2CO3 is the pH regulator. The stirring time is 15 min. The Ni^2＋ removal efficency is above 98%. The concentration of Ni^2＋ in treated water is below 0.20 mg/L.It meets with the discharge standard.