• 关键词：高铁酸盐  氧化  絮凝  FA

• 基金项目：国家自然科学基金

• 曲久辉
• 中国科学院生态环境研究中心国家重点环境水化学实验室,北京 100085

• 林谡
• 中国科学院生态环境研究中心国家重点环境水化学实验室,北京 100085

• 田宝珍
• 中国科学院生态环境研究中心国家重点环境水化学实验室,北京 100085

• 王立立
• 中国科学院生态环境研究中心国家重点环境水化学实验室,北京 100085

• 摘要：研究了高铁酸盐对饮用水中富里酸(FA)的去除效能与作用条件,考察了高铁酸盐单独氧化、氧化絮凝和与聚合氯化铝联合应用的除FA效果。结果表明,当高铁酸钾与FA的质量比为12时,高铁酸盐氧化可以去除水中90%以上的FA,在浑浊水中高铁酸盐具有氧化和絮凝的双重作用效能,同样高铁酸盐投加量下,可将95%以上的FA去除。采取高铁酸盐与聚合铝联用可显著提高对FA的去除效果。

• Abstract：Removal efficiency of fulvic acid(FA) in drinking water using ferrate and the optimum conditions were investigated.The removal effects of FA by using oxidation and oxidation-coagulation of ferrate alone and combining application of ferrate and polyaluminium chloride(PAC) were also compared.Jar test was employed in the studies and the results of FA removal was analyzed spectrophotometrically.Ferrate exihibited good oxidation capacity on FA.The results have showed that about 90% of FA can be oxidized and removed from the water when weight ratio of ferrate to FA is 12:1.Adsorption of Fe(OH)3 precipitation produced by ferrate decomposition can also give FA an extra removal.In the presence of turbidity ferrate can conduct oxidation and coagulation simultaneously and over 95% of FA was eliminated with the same weight ratio of 12:1.Combining application of ferrate and PAC was more efficient for FA removal.2 mg/L FA could be entirely removed from synthetic drinking water by joint treatment of 8 mg/L ferrate and 0.8 mg/L PAC (by weight).

• Key words：ferrate  oxidation  coagulation  fulvic acid

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