利用天然地质材料去除水中重金属的实验研究

The Study on Removal of Heavy Metals in The Wastewater by Using Crude Geological Material

该文在参考前人研究的基础上 ,通过实验将纯灰岩与砂子、碳质灰岩、角砾灰岩对重金属Cu、Zn、Cd、Ni的去除率进行对比 。

This paper focuses on looking for a cheep substitute of sand which is used to purify the heavy metals in plating wastewater. Pure limestone is found better than sand during the course of compare it with sand, carbonaceous limestone and brecciaed limestone on rate of purify to Cu 2+ , Zn 2+ , Cd 2+ and Ni 2+ in plating water. Considerating the influence caused by the variation of granularity and quantity of limestone, of Na2CO3, of temperature and of the form of reaction, the operating conditions are primarily made certain. What's more, if gives a brief discussion on the mechanisms which contributing to the co-removal of heavy metals in the plating water.