摘要： 以聚合氯化铝（PAC）与阳离子有机絮凝剂（PI）作为复配絮凝剂，PAM作为助凝剂对去除飞机除冰废水中增稠剂进行了研究。实验表明：在絮凝剂投加质量浓度为1.50 g/L，PAM投加质量浓度为0.1 g/L条件下，废水中增稠剂的去除率达到98.9%，浊度去除率达97.7%，余浊为6.2 NTU。PAC与PI间具有协效作用，其最佳复配质量比为5∶1，PAM的加入能够降低絮体沉降时间。在此基础上，对相关絮凝机理进行了初步探讨。

关键词: 飞机除冰废水, 聚合氯化铝, 阳离子有机絮凝剂, 增稠剂去除, 絮凝机理

Abstract: Research on the removal of thickeners from aircraft deicing wastewater with polymeric aluminum chloride (PAC) and cationic organic flocculant(PI) as composite flocculants,and PAM as a coagulant aid has been accomplish-ed. The results show that when the composite flocculants dosage is 1.50 g/L and the PAM dosage is 0.1 g/L,the thickener removing rate reaches 98.9%,the turbidity removing rate achieves 97.7% and the residual turbidity is 6.2 NTU. PAC and PI show an excellent synergistic effect,and its best composite ratio is m(PAC):m(PI)=5:1. The addition of PAM could decrease the settling time of flocculate. On this basis,the relative flocculation mechanisms are discussed preliminarily.

Key words: aircraft deicing wastewater, polymeric aluminum chloride (PAC), cationic organic flocculant (PI), thick-ener removal, flocculation mechanism

中图分类号: 

• X703.5