稀土冶炼含C_2O_4^(2-)废水的治理与回收利用技术

Treatment and Recycling Technolgoy on Rare Earth Metallurgy Wastewater Containing C_2O_4^(2-)

稀土含C_2O_4^(2-)废水的直接排放,不仅浪费酸和稀土资源,而且导致水系COD超标污染环境。叙述了稀土冶炼过程中所产生的含C_2O_4^(2-)废水的治理与回收利用技术研究进展,分析了现有的络合萃取法、直接回用法、沉淀法、蒸馏法、臭氧氧化法、溶液电解法等工艺方法的优缺点,以期为稀土含C_2O_4^(2-)废水的综合治理工作提供参考。

If rare earth wastewater including C2O4^2- were discharged directly, not only acid and rare earth would be wasted but also the COD of water system would be overproof. The treatment and recycling technology on rare earth metallurgy wastewater including C2O4^2- were described. The advantages and disadvantages of existing methods such as complexation extraction, directly recycling, precipitation, distillation, ozone oxidation and electrolysis were analyzed, which could provide some reference for the comprehensive management of wastewater through the analysis.