废铁回收利用降低铜冶炼污水处理成本

Waste iron is recycled to reduce the cost of copper smelting wastewater treatment

介绍了中铝东南铜业公司铜冶炼污水处理流程及改进措施。利用废酸处理工序的硫化后液与废铁反应生成二价铁离子,再将大部分二价铁离子带入一段中和系统,使之与污水中的金属离子反应生成沉淀物,降低了后续工序电化学设备的铁极板消耗量,从而降低污水处理成本。

The copper smelting wastewater treatment process and improvement measures of China Aluminum Southeast Copper Company are introduced.The sulphurized liquid of waste acid treatment process reacts with waste iron to form ferrous ions, and then most ferrous ions are brought into a neutralization system to react with metal ions in sewage to form precipitates, which reduces the consumption of iron plates of electrochemical equipment in subsequent processes and reduces the cost of sewage treatment.