淀粉接枝改性絮凝剂的研究现状与展望

Research status and prospect of graft modified starch-based flocculants

综述了淀粉接枝改性絮凝剂的预处理、改性方法的研究现状,从接枝单体、接枝链长与电荷密度、接枝率这些改性絮凝剂性质的变化以及絮凝剂用量、污染物浓度、pH值等絮凝条件对絮凝效果的影响进行了总结和介绍,并且指出了在探索更加有效且实用的接枝方法的同时,开发复合絮凝剂,并进行改性絮凝剂的再生与回用方法,以及对改性絮凝剂的安全性研究是未来淀粉接枝改性絮凝剂技术研究方向的重点。

The research status of the pretreatment and modified methods of modified starch flocculants are reviewed.Changes in properties of modified flocculants such as grafting monomer,grafting chain length and charge density,grafting rate,and the effect of flocculant dosage,initial pollutant concentration,pH value and other flocculation conditions on the flocculation performance are summarized and discussed.Moreover,it is pointed out that the development of composite flocculants and the regeneration and re-use of modified flocculants,as well as the safety research of modified flocculants while exploring more effective and practical methods of flocculants are the focus of future research directions of starch flocculants.