• 关键词：聚合铝  凝聚  絮凝  吸附  电泳度  凝聚区域图

• 基金项目：

• 栾兆坤
• 中国科学院生态环境研究中心, 北京 100085

• 汤鸿霄
• 中国科学院生态环境研究中心, 北京 100085

• 摘要：采用不同碱化度B（OH/Al）值的聚合铝和AlCl₃对高岭土悬浊液进行凝聚絮凝实验,同时测定电泳度及表面吸附特征,结合不同铝盐的化学形态分布,探讨聚合铝的高效凝聚作用原理.并求得表面吸附覆盖率,电位变化与形态分布间的定量关系,绘出聚合铝的凝聚区域图,对阐明聚合铝的作用机理提供了实验依据.

• Abstract：C_oagulation jar tests were carried out by AlC₁₃ and polyalumi-num of different basicities in kaolinite suspension. The micro-elec-tro-phoretic mobilities and adsorption parameters were also determined. The zeta potential change was related with the surface coverage and chemical species distribution. The coagulation diagramof polyaluminum was compared with that of AlC₁₃. In the light of experimental results the mechanism for superior coagulation function of polyaluminum was then discussed further.

• Key words：polyaluminum  coagulation  flocculation  adsorption  micro-electrophoretic mobility  coagulation diagram

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