RESEARCH PROGRESS OF FERRATE IN DRINKING WATER TREATMENT
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摘要: 隨著水生態環境污染問題的加重和人們對飲用水安全的日益重視,亟需研發更高效、低碳、能夠適用于復雜污染水體的水處理工藝。作為一種綠色多功能的水處理藥劑,高鐵酸鹽在飲用水處理中具有廣闊的應用前景。主要綜述了近年來高鐵酸鹽Fe (Ⅵ)在飲用水處理領域的研究進展,重點介紹了Fe (Ⅵ)的氧化特性和反應機制,以及Fe (Ⅵ)還原生成的鐵(氫)氧化物顆粒的吸附特性,闡述了強化Fe (Ⅵ)氧化和吸附效能的調控策略,綜合討論了Fe (Ⅵ)在氧化去除有機污染物、控制消毒副產物生成、去除水中重金屬離子、強化混凝和緩解膜污染等方面的處理效果和作用機制,并對Fe (Ⅵ)在飲用水處理中的應用前景和發展趨勢進行了展望。Abstract: With the aggravation of water pollution and the increasing attention to the safety of drinking water, it is urgent to develop more efficient and low-carbon water treatment processes that could be applied to complex and polluted aquatic environment. As a green and multifunctional agent for water treatment, ferrate has broad application prospects in drinking water treatment. In this paper, the research results of Fe(Ⅵ) in the field of drinking water treatment in recent years were reviewed. The oxidation characteristics and reaction mechanisms of Fe(Ⅵ), as well as the adsorption characteristics of iron oxide/hydroxide particles generated via Fe(Ⅵ) reduction were introduced here. The strategies to enhance the oxidation and adsorption efficiency of Fe(Ⅵ) for pollutants removal were expounded. The efficiency and mechanism of Fe(Ⅵ) to oxidize organic pollutants, to control the formation of disinfection by-products, to remove heavy metal ions in water, to enhance coagulation and to mitigate membrane pollution were discussed. Finally, the application prospect and development trend of Fe(Ⅵ) in drinking water treatment were prospected.
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Key words:
- ferrate /
- drinking water treatment /
- oxidation /
- adsorption /
- membrane fouling
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