实验室含铬废液的处理

Treatment of Wastewater Containing Dichromate from the Laboratory

实验室废水中含有的Cr6+和Cr3+,对人体及动物有毒害作用,严重污染环境。本实验以实验室产生的含铬废液为处理对象,采用还原沉淀法处理含铬废水。通过研究,选定了最佳实验条件,通过加入Fe2+调整Fe3+、Fe2+、Cr3+的比例,沉淀物经过煅烧得到回收产品铁氧体。

The wastewater containing Cr6＋ and Cr3. from laboratory is harmful to human beings and animals, and the discharge of this wastewater causes severe environmental pollution. In this study, the wastewater containing Cr was treated by the chemical reduction, and the optimum reaction conditions were achieved. The propotion of Fe3＋, Fe2＋ and Cr3＋ was adjusted by the addition of Fe2＋ ., the last deposit could be transformed into ferrites by calcined at high temperature.