Abstract:

Ferrate（Fe(Ⅵ)）is a new type of water treatment chemicals. From the point of view of structural chemistry，electrochemistry，thermal decomposition characteristics and stability，the physical and chemical characteristics of Fe(Ⅵ) were analyzed，and the preparation of ferrate was described. Its application to water treatment was summarized，such as pre-oxidation by ferrate，and the specific applications were outlined. The results showed that 1.0 mg / L ferrate pre-oxidation could significantly improve the effect on coagulation，Water after sedimentation and filtration turbidity removal rate reached 98.58% and 99.9% respectively. Water colority，UV₂₅₄ and other organic composite indicator were significantly decreased. At the same time，manganese and iron were also significantly reduced. In addition，ferrate pre-oxidation could effectively remove bacteria and E.coli. Finally，according to the practical situation，the paper offers advice on engineering application of ferrate.

摘要：

高铁酸盐是一种新型的水处理药剂。本文从结构化学、电化学、热分解特性及稳定性的角度，系统分析了高铁酸盐的物化特性，阐述了高铁酸盐制备方法，综述了高铁酸盐在水处理方面的应用。以Fe（Ⅵ）预氧化水源水工艺为例，介绍了高铁酸盐的具体应用，结果表明，1.0 mg/ L的高铁酸盐预氧化即可显著提高混凝效果，沉后水和滤后水浊度去除率分别达到98.58%、99.94%，水中色度、UV₂₅₄等有机物综合指标均呈明显下降趋势，与此同时，水中锰、铁浓度也显著降低。另外，高铁酸盐预氧化可有效地去除水中细菌和大肠菌群。最后，还根据高铁酸盐工程应用实际情况，提出了工程应用的建议。