目前，无毒、环保、性能优异的重金属絮凝剂的研发成为水处理絮凝剂领域关注

目前，无毒、环保、性能优异的重金属絮凝剂的研发成为水处理絮凝剂领域关注的热点之一。淀粉改性絮凝剂作为环境友好型、经济良好型、易于降解型天然绿色絮凝剂，在重金属废水处理方面受到广泛的关注。本综述概述了重金属污染的来源与危害，系统地阐明了淀粉的物理和化学改性方式，重点介绍了淀粉絮凝剂接枝共聚、交联、醚化和酯化的常用化学修饰方法，并对其去除重金属离子的机制作了详细的阐述。最后还对淀粉改性絮凝剂发展趋势进行了展望。

目前，无毒、环保、性能优异的重金属絮凝剂的研发成为水处理絮凝剂领域关注的热点之一。 淀粉改性絮凝剂作为环境友好型、经济良好型、易于降解型天然绿色絮凝剂，在重金属废水处理方面受到广泛的关注。 本综述概述了重金属污染的来源与危害，系统地阐明了淀粉的物理和化学改性方式，重点介绍了淀粉絮凝剂接枝共聚、交联、醚化和酯化的常用化学修饰方法，并对其去除重金属离子的机制作了详细的阐述。 最后还对淀粉改性絮凝剂发展趋势进行了展望。

At present, the research and development of non-toxic, environmental friendly and excellent heavy metal flocculant has become one of the hot spots in the field of water treatment flocculant. Starch modified flocculant, as a kind of environmental friendly, economic and easy degradation natural green flocculant, has been widely concerned in heavy metal wastewater treatment. This review summarizes the source and harm of heavy metal pollution, systematically expounds the physical and chemical modification methods of starch, mainly introduces the common chemical modification methods of graft copolymerization, cross-linking, etherification and esterification of starch flocculant, and expounds the mechanism of removing heavy metal ions in detail. Finally, the development trend of starch modified flocculant was prospected.<br>