Modified sweet potato starch flocculants were prepared with cationic etherizing agent and microwave technique,and used to treat the dyeing and printing wastewaters.

• 采用微波辐射技术,用阳离子醚化剂对红薯淀粉进行改性,制备了改性红薯淀粉絮凝剂,并用其处理印染废水。