磁絮凝去除工业废水中铜离子的试验研究

摘要

采用磁絮凝对工业废水中重金属铜离子进行试验研究,讨论了聚合硫酸铁(PFS)投加量、静沉时间、温度、pH值、磁粉投加量对处理效果的影响.试验结果表明PFS投加量为100mg/L,pH值为8.0,静沉时间为20min,磁粉投加量为400mg/L时对含铜废水有良好的处理效果,铜离子去除率超过了97%,出水铜离子的质量浓度低于0.5mg/L.含铜废水经磁絮凝处理后均可以达到GB 8978-1996<污水综合排放标准>.%An experiment on the removal of heavy metal copper ions from industrial wastewater by magnetic flocculation was studied, and the influences of PFS dosage, static sedimentation time, temperature, pH value and magnetic powder dosage on treatment effect were discussed at the same time. The result of the test showed that,when the dosage of PFS and magnetic powder were 100 and 400 mg/L respectively, the pH value was 8.0, the static sedimentation time was 20 min, the said process had a good effect on copper-containing wastewater treatment, the removal rate of copper ions was over 97％, and the mass concentration of copper ions in the effluent water was below 0.5 mg/L. Therefore, after be treated by magnetic flocculation, the quaility of coppercontaining wastewater could meet the requirement of GB 8978-1996 Integrated Wastewater Discharge Standard.