采用Fenton-铁氧体法联合工艺处理含铜、镍的络合电镀废水.探讨了Fenton法破络反应初始pH、初始H2O2质量浓度,Fe2+与H2O2的质量比和反应温度对COD去除率的影响,研究了铁氧体法处理时pH、反应温度、Fe与金属离子的质量比和曝气速率等对处理效果的影响.结果表明,在初始pH=3、初始H2O2质量浓度为3.33 g/L、m(Fe2+)/m (H2O2)=0.1、温度25℃的最优Fenton氧化条件下,对废水进行Fenton氧化处理60 min,COD去除率高达73.4％.铁氧体法处理的最优工艺条件为:沉淀pH=11,曝气流量25 mL/min,Fe与废水中金属离子的质量比为10,反应温度50℃,曝气接触时间60 min.在此条件下废水中镍离子和铜离子的去除率分别达到99.94％和99.81％,均达标排放.另外,沉淀污泥的构相分析表明,在最佳工艺条件下所得沉淀物含铁氧体NiFe2O4、Fe3O4等.
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