Effects of hydraulic and solids loading on clarifier performance
Effects of hydraulic and solids loading on clarifier performance
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水力和固体负载对澄清器性能的影响
DOI：
10.1080/00221689309498870
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发表时间：
1993
影响因子：
2.3
通讯作者：
Siping Zhou
中科院分区：
文献类型：
--
作者：
J. McCorquodale;Siping Zhou
采用无挡板理想圆形槽的数值模型，研究了入口固体浓度和入口流量对固体场去除的相对重要性。流出物浓度对取出区的速度非常敏感。密度弗劳德数与水力负荷和固体负荷有关。结果发现，在一个恒定的排放量，在退出区的向上速度增加而降低密度弗劳德数。在恒定固体负荷下，存在一个最佳密度弗劳德数，使出水浓度最小。澄清池的性能是密度弗劳德数和回流活性污泥比的函数。对于这里考虑的澄清器，对于恒定的固体负载的最小流出物浓度，发生在约0.5的密度弗劳德数。雷诺数，在湍流状态时，并没有显着影响坦克的流体动力学。预测的固体分布是在很好的同意…
A numerical model for an idealized circular tank with no baffle is used to investigate the relative importance of inlet solids concentration and inlet flow on the removal of solids field. Effluent concentration is very sensitive to the velocities in the withdrawal zone. The densimetric Froude number relates hydraulic and solids loading. It was found that the upward velocities in the withdrawal zone increase with decreasing densimetric Froude number for a constant discharge. Under constant solids loading there is an optimum densimetric Froude number for minimum effluent concentration. The performance of the clarifier is a function of the densimetric Froude number and the return activated sludge ratio. For the clarifier considered here, the minimum effluent concentration for a constant solids loading, occurred at a densimetric Froude number of about 0.5. The Reynolds number, when in the turbulent regime, did not significantly affect the tank hydrodynamics. The predicted solids distribution was in good agree...