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絮凝构筑物设计阶段普遍使用基于层流理论的甘布公式计算平均G值,对絮凝池内部细节设计缺乏紊流理论依据。为此,依据紊流理论,基于群体平衡原理,建立了完整的絮凝反应模型(Floc-SMEDI)。通过非定常湍流模型、多相流模型、群体平衡模型以及絮凝反应模型的耦合,模拟水处理絮凝阶段絮体的变化过程。经过多种池型的测试,该模型能有效模拟絮凝过程中絮体的变化情况,为絮凝池的优化设计以及新池型的研发提供了新依据。
In the design phase of flocculation structure, the average G value is generally calculated based on the theory of laminar flow and the lack of turbulence theory basis for the internal details of the flocculation tank. Therefore, based on the theory of population balance, a complete flocculation reaction model (Floc-SMEDI) was established based on the theory of turbulence. Through the coupling of unsteady turbulence model, multiphase flow model, population balance model and flocculation reaction model, the flocculation process of flocculation stage in water treatment was simulated. After a variety of cell-type tests, the model can effectively simulate the floc changes during the flocculation process, providing a new basis for the optimal design of the flocculation pool and the development of the new pool type.