作　　者： ; ; ; ;

机构地区： 暨南大学理工学院环境工程系

出　　处： 《暨南大学学报（自然科学与医学版）》 2009年第3期277-281,共5页

摘　　要： 本实验以硫酸铝和活性氢氧化铝为主要原材料制备了高稳定性的聚合硫酸铝(PAS),并对其混凝性能进行了研究.对PAS的稀释稳定性和触水后快速水解特性进行了分析探讨,考察了PAS的盐基度、投加量、水温和水的pH等因素对其混凝性能的影响.结果表明,当PAS的盐基度为50%时,其混凝除浊和对化学耗氧量(CODC r)的去除率最高;与聚合氯化铝(PAC)和硫酸铝相比,PAS不仅具有水解速度快、絮体大、沉降快、除浊效果好的特点,而且在低温和低pH条件下,仍具有优良的混凝沉降性能. The high stability polyaluminium sulfate was made by using aluminium sulfate and activated aluminium hydroxide. The coagulative performance of polyaluminium sulfate was investigated. Its dilution stability and its characteristic of rapid hydrolysis after touch water were analyzed. The effects of the basicity, coagulant dosages, temperature, and the pH on the coagulafive performance were researched. The experimental results show that the optimum basicity of polyaluminum sulfate is 50%. At this condition, it has the best coagulative character on. removing turbidity and CODcr. Compared with polyaluminium chloride, it has the feature of rapid hydrolysis, big flocs, fast settlement, and good turbidity removal. When the water temperature and pH are low, the polyaluminum sulfate still has good coagulative precipitation property.

关 键 词： 聚合硫酸铝 硫酸铝 混凝剂 混凝性能

领　　域： [化学工程]