摘要
本文研究了Cr(Ⅵ)、V(Ⅴ)、pb(Ⅱ)、Cd(Ⅱ)、Zn(Ⅱ)在活性Fe(OH)_5胶体上的吸附行为和机理,讨论了吸附与pH,时间,温度,浓度的关系和干扰离子对吸附的影响。得出了吸附的基本模式,以及以上离子在Fe(OH)_3胶体上的吸附最佳工艺条件,此外还研究了Cr(Ⅵ).V(Ⅴ)的解吸,负铬,负钒Fe(OH)_3的再生。得出了Fe(OH)_3在处理含铬、钒废水时能循环使用的结论。用实验所得最佳条件处理工厂排放含铬、含钒废水,证明效果良好。
The behaviour and mechanisms of adsorption of cr(Ⅳ)、v(Ⅴ)、 pb(Ⅱ)、Cd(Ⅱ)、Zn(Ⅱ) to activated gelatinous Iron(Ⅲ) hydroxide are investigated. We discuss the relation of PH, time, temperature, and concentration to adsorption, the effect of disturbed ions on adsorption, the desorption of cr(Ⅵ)、Ⅴ(Ⅴ). and the recovery of Fe(OH)_3 containing er(Ⅵ). A model and the best conditions for adsorption are proposed. We conclude that Iron(Ⅲ) hydroxide can be used cyclically while treating waste water using the proper conditions, We treated the Cr(Ⅵ)、Ⅴ(Ⅴ)in processing waste. The result was satisfactory.
关键词
溶液
金属离子
吸附
共沉淀
废水
adsorption copreeiptitation activated Iron(Ⅲ) hydroxide gela-tinous waste water
