高铁酸盐在饮用水厂应用的可行性研究  

Feasibility Study on Application of Ferrate (Ⅵ) in Drinking Water Treatment Plants

作　　者：刘益兵[1] 曾凡成[1] 王红宇[1] 

机构地区：[1]浙江工业大学建筑工程学院,浙江杭州310014

出　　处：《中国给水排水》2017年第3期50-53,共4页China Water & Wastewater

摘　　要：高铁酸盐是一种集氧化、消毒和混凝为一体的高效绿色水处理剂,在水处理领域有着很大的应用前景,但现阶段仍存在稳定性差和高浓度试剂成本高等缺点,这也是限制其大规模应用的重要因素。通过隔膜电解法制备高铁酸钠溶液,并分析其制备成本,发现定时更换阳极铁能大幅提高高铁酸钠的浓度和降低其制备成本,这可为高铁酸盐在水厂中大规模直接应用的可行性提供参考。当电流密度为33.8 m A/cm^2、电解时间为3 h、在第1小时更换阳极铁时,高铁酸钠溶液浓度可达到0.39 mol/L,制备成本为0.08元/g。Ferrate （Ⅵ） is an efficient and green water treatment reagent integrating oxidation, disinfection and coagulation, which has wide application prospect in the field of water treatment. Due to the main shortcomings of poor stability and high cost of the reagents in high concentration, its large-scale application is restricted currently. Diaphragm electrolysis of sodium ferrate （ Ⅵ） solution and the cost analysis of preparation were conducted. The results showed that it could improve the ferrate （Ⅵ） concentration and reduce the production cost by replacing anode regularly. It would provide a reference for the application of ferrate （ Ⅵ ） in drinking water treatment plants. The concentration of sodium ferrate （ Ⅵ ） solution could reach 0.39 mol/L with a cost of 0.08 yuan/g under the following conditions ： the current density of 33.8 mA/cm^2, the electrolysis time of 3 h and the replacement of the anodic during the first 1 h.

关 键 词：高铁酸盐 隔膜电解法 阳极补换 成本分析 水处理 

分 类 号：TU991.2[建筑科学—市政工程]