无机絮凝剂的混凝机理研究

The Study of Coagu-flocculation Mechanism of Inorganic Flocculant

在混凝机理的基础上,提出了无机絮凝剂的混凝物理模型,并得到试验证明.在宏观上,定义混凝过程为混合、凝聚和絮凝3个阶段.虽然实际混凝过程没有严格区分,但试验证明了无机絮凝剂的混合和凝聚几乎是在同一阶段完成,并且要求较弱的搅拌强度.前期对混凝机理的研究偏重于碰撞机理和速度梯度理论,但实际应用中的网格混凝不能吻合.无机混凝剂由于其水解过程的复杂性,在工业使用中对混凝的效果有较明显的影响.试验证明上述混凝定义及其物理模型有其正确性和指导性.对混凝过程亚微观角度上的定义及其物理模型的提出,不但得到了试验证明,而且更有利于今后我们对混凝机理进行更详尽的研究.图4,表4,参10.

The Coagu-flocculation physical model is showed here and validated in good position by experiments on the basis of Coagu-flocculation mechanism. On the view of macroscopic, we definite the process Coagu-flocculation for three phases: mix, coagulation, flocculation. Although, there is no rigorous distinguish in the process of coagulation, the experiments proved the following things:the mixture and coagulation of inorganic flocculant nearly finish at the same time, need the weaker stir intensity; this definition and its physical model are meaningful to the further study. Prophase studies about the Coagu-flocculation mechanism lay particular stress on collision mechanism and the theory of velocity grads, but reseau Coagu-flocculation can't inosculate in the practical applications. Due to the complex in the hydrolyze process, the inorganic flocculant does a obvious influence on the result of Coagu-flocculation in industry. The experiments have proved that the Coagu-flocculation definition and its physical model have their correctness and guideness. The definition of Coagu-flocculation process on the view of microcosmic and its physical model are not only proved, but also are propitious to the further study of Coagu-flocculation mechanism.4figs,4tabs,10refs.