玉米淀粉改性阳离子絮凝剂的制备

Preparation of Cation Flocculant by Modifying Corn Starch

以玉米淀粉为原料,经糊化后,加入阳离子化试剂,合成了阳离子性改性淀粉絮凝剂SF。以生活污水为处理体系,探讨了SF的絮凝性能。在30 mg/L时,SF对高浊度207 NTU高岭土悬浮液达到最好的处理效果,出水浊度在10 NTU以下。对生活污水中COD有一定的去除效果。SF作PAC的助凝剂处理湖水,比单独投加PAC絮凝剂有更好的处理效果。

Using corn starch as raw material, via gelatinizafion, adding the reagent of cation, the modified starch cationic coagulant SF was synthesized. In a sewage treatment system, the flocculation performance of the SF was discussed. The result showed that flocculation had good turbidity removal efficiency while 30 mg/L was added ,the treated water was under 10 NTU in high turbidity 207 NTU kaolin suspension system. SF is also a certain effect on removaling COD in wastewater. SF as assitant flocculant for PAC in treating lake water,has better effect than separate PAC flocculant ,turbidity removal rate is more than 90%.