Abstract:

The accelerating effect of weak magnetic field(WFM)on zero valent iron used for the removal of heavy metal ions from copper smelting wastewater has been investigated. The results show that when the initial pH of the wastewater in Xigui Workshop is 4.0 to 5.0, and the dosage of micron-scaled ferrous powder is 0.1 to 0.5 g/L, both pre-magnetization and re-magnetization can accelerate zero valent iron to remove the heavy metal ions from the wastewater in Xigui Workshop. When initial pH is 4.0, and the dosage of micron-scaled ferrous powder is 1.0 g/L, the wastewater containing highly concentrated arsenic has been treated. It is found that the re-magnetization still has strong accelerating effect on micron iron used for the removal of total arsenic from wastewater.

Key words: weak magnetic field, zero-valent iron, copper smelting wastewater, heavy metal

摘要：

考察了弱磁场对零价铁去除铜冶炼废水中重金属离子的加速作用。结果表明, 当稀贵车间废水初始pH为4.0~5.0, 微米铁粉投加量为0.1~0.5 g/L时, 预磁化和加磁均能加速零价铁对稀贵车间废水重金属离子的去除。在初始pH为4.0, 微米铁粉投加量为1.0 g/L的条件下, 对水淬车间高砷废水进行处理, 结果发现, 外加磁场对微米铁去除高砷废水中总砷仍有很强的促进作用。

关键词: 弱磁场, 零价铁, 铜冶炼废水, 重金属离子

CLC Number: 

• TU992.3