高分子螯合剂在重金属废水处理中的应用

综述了国内外废水处理中捕集重金属离子的各种高分子螫合剂的制备方法及应用。二硫代氨基甲酸盐衍生物对重金属具有极强的螫合能力．以氨基甲酸或其盐类高分子有机物为基质的人工合成高分子螯合剂对去除各类重金属离子有良好的效果。改性天然高分子螫合剂其原料淀粉和纤维素是一种来源既便宜又广泛的天然高分子，经改性后的产品对捕集重金属离子具有低成本、高效、低毒的优势。今后可以进一步根据物质结构与性能的关系对天然高分子进行改性．并加强其应用工艺的研究开发。

Application of the macromolecule-chelating agent to the treatment of heavy metal wastewater

The synthesis and application of the macromolecule-chelating agents to the treatment of heavy metal wastewater are described. Due to its strong binding ability to heavy metals, dithiocarbamates have been widelyused in the environment treatment and have got a good effect in the removal of heavy metals. The modified nat-ural macromolecular chelating agent including starch and fiber, are stable, effective, and less toxic, with lowcost and wide source. According to the relation between their structures and functions, in the future, more attention should be paid to explore more effective process for their usage on environment treatment.