天然及改性膨润土吸附废水中Pb^(2+)、Ni^(2+)、Cd^(2+)的试验研究

Experimental Study on Adsorption of Pb^(2+),Ni^(2+) and Cd^(2+) from Waste Water by Natural and Modified Bentonites

用山东潍坊涌泉某膨润土厂生产的天然钙基膨润土和改性膨润土对模拟含Pb2+、Ni2+、Cd2+的废水分别进行了试验研究。结果表明,该厂的天然钙基膨润土和改性膨润土对废水中的Pb2+、Ni2+、Cd2+有较高的去除率,可以作为重金属离子Pb2+、Ni2+、Cd2+的吸附剂使用。

Experimental study was made on adsorbing Pb^2＋ , Ni^2＋ and Cd^2＋ from the simulated waste water by using natural Ca-betonite and modified betonite produced by a hetonite factory in Yougquan, Weifang, Shandong respectively. The results show that the natural Cabetonite and modified betonite produced by this betonite factory have high removal rates of Pb^2 ＋ , Ni^2 ＋ and Cd^2 ＋ in the waste water and therefore, can be used as the absorbent for heavy metal ions of Pb^2 ＋ , Ni^2 ＋ and Cd^2 ＋.