固定生物膜－活性污泥系统（integrated fixed-film activated sludge systems，IFAS）是活性污泥与生物膜工艺的结合，兼具二者的优点，可有效提高污染物的去除效果，在实现污水的达标排放方面具有较大优势。对国内外有关IFAS的研究与应用进展进行了系统的总结，主要包括IFAS系统的发展历程、工艺特点、微生物分布特征、系统动力学模型及应用现状等，并对IFAS系统未来的发展方向与研究重点进行了初步探讨。%Integrated fixed-film activated sludge systems(IFAS) is a combined process of activated sludge and bio-film,which has the advantages of both processes. IFAS can increase the pollutant removing effects,having greater superiority in achieving the set discharge standard. The progress in research and application concerning IFAS,both in China and abroad,is summarized systematically,mainly including the development history,technological charac-teristics,microorganism distribution characters,kinetics model and application status of IFAS system. In addition, the future developing direction and research emphasis of IFAS system are discussed preliminarily.
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