摘要
本文采用新型流动脉动絮凝检测技术,测定了不同碱化度(B值)的聚合铝凝聚絮凝过程中絮集物颗粒的形成与增长过程的动态变化差异.结果表明,该技术对监测凝聚絮凝过程中絮集物的形成与增长是十分敏感的,絮凝指数(R)可在线地反映絮集物动态增长过程的变化.高碱化度聚合铝(B=2.5)比低碱化度聚合铝及氯化铝具有更快的凝聚絮凝速度和形成更大的絮集物颗粒.通过絮凝指数的测定,并结合剩余浊度和ζ电位测定数据,为深入了解聚合铝的高效絮凝动力学作用机理提供了直观的科学依据,同时也有助于更好地选择最佳剂量和絮凝反应时间.
The dynamic process and aggregational state of coagulation of Kaolin suspensions with polyaluminum chloride were investigated by a new of flow through optial monitoring technique. Results show that the coagulation index (R) measured by the flow through optical monitoring technique is very sensitive to the aggregation processes and the growing state of Kaolin floes in the folcculation with polyaluminum chloride coagulant. The coagulation index(R)complemented dynamically the data obtained from residual turbidity and potential for understanding the high ef feciency f locculation and provid-. ed valuable information on the high efficiency of flocculation and the dynamic mechanism in the flocculantion with polyaluminum. It can also help in selecting optimal coagulant dose and reactionary times.
出处
《环境化学》
CAS
CSCD
北大核心
1996年第6期523-529,共7页
Environmental Chemistry
基金
国家自然科学基金
