本文选用木屑作为螯合树脂的不溶性骨架材料,与柠檬酸通过酯化、水解反应,主要引入了β-羟基戊二酸功能团,制得了新型螯合树脂——术屑柠檬酸脂(简称CS)。实验表明,CS树脂价廉易得,具有良好的离子交换树脂所要求的理化性质和广谱的重金属选择性,能有效地处理重金属工业废水和回收贵重金属。 In this paper, we use sawdust as chelating resin insoluble skeleton material, and citric acid through esterification, hydrolysis reaction, the main introduction of β-hydroxy glutaric acid functional groups, a new type of chelating resin - surgery crumb citric acid (referred to as CS ). Experiments show that CS resins are cheap and readily available, have good physical and chemical properties required by ion exchange resins and a broad spectrum of heavy metal selectivities, and are capable of effectively treating heavy metal industrial wastewater and recovering valuable metals.