复合磁性絮凝剂在水处理中的研究现状及发展方向

Research status and development direction of composite magnetic flocculant in water treatment

近年来,磁性纳米材料(MNPs)因其独特性能,在水处理领域中受到了研究人员的格外关注。若将传统絮凝剂和磁性纳米材料结合,所得复合磁性絮凝剂将具有良好的磁响应性,可提高絮凝处理的固液分离效率、缩短水力停留时间,实现高效快速絮凝、减少絮凝体含水量。因此,基于功能化MNPs的复合磁性絮凝剂在水处理领域中有着很广阔的研究和应用前景。本文综述了各类复合磁性絮凝剂在国内外的研究现状,分别对其在水处理领域中的具体应用进行了概括,并总结了各类复合磁性絮凝剂进行污染控制方面的优缺点。同时,在此基础上,针对目前水污染控制领域的变化提出今后需要研究的重点和发展方向。

Recently, magnetic nano-materials（ MNPs） have attracted considerable attention in the field of water treatment due to their unique features. If combined with magnetic nano-materials, the composite flocculant will show good magnetic response, which can improve the efficiency of solid-liquid separation and shorten the hydraulic retention time of flocculation treatment so as to achieve both high efficient flocculation and low moisture content of the floe. Therefore, the composite flocculant have a broad research and application prospects based on functionalized magnetic nanoparticles （ FMNPs）. This work presents a comprehensive review on the research and application progress of different kinds of composite flocculants and summarizes their merits and flaws. On this basis, the development and application tend of composite flocculants aimed at the changes in the field of water pollution control are also analyzed at the same time.