本文研究了聚氧化乙烯 ( PEO)的引入对 Al( III)的水解聚合过程、成品聚合氯化铝 ( PAC)中铝的形态分布及絮凝能力的影响 .结果表明 ,PEO的引入使碱滴定过程中 Al( III)的水解聚合过程提前 ,所制得的改性 PAC抗酸性增加 ,含有更多的不能被 Al- Ferron方法所解离 -络合的形态 ,在室温下存放更为稳定 . PEO的引入能明显提高 PAC的絮凝能力 ,加快絮体沉降速度 .两种引入方法中 ,先加入法的效果优于后加入法 In this paper, the effects of poly (ethylene oxide) (PEO) on the hydrolysis and polymerization of Al (III), the morphology of aluminum in the finished PAC and the flocculation ability were investigated. The results showed that the introduction of PEO The hydrolytic polymerization of Al (III) progresses in advance, and the modified PAC possesses higher acid resistance, more forms that can not be dissociated-complexed by Al-Ferron method, and stored more stable at room temperature. Of the introduction can significantly improve the PAC flocculation capacity and speed up the sedimentation speed of the two methods of introduction, the first method is better than after the addition method