水处理试点研究中使用的过滤器的尺寸对试点设施本身的成本有很大影响。结果表明，通过保持滤柱直径和介质直径（D/D）之间的适当比率，可以避免误差。本研究的目的是研究相同的scaleup参数对过滤过程本身的影响。五个先导滤柱与一个满刻度过滤器并联运行。在这些试验中，最小柱的D/D范围为26:1，完整柱的D/D范围为6000:1- 水垢过滤器。在任何过滤器的平均水头损失累积率、出水浊度或出水颗粒计数方面，均未观察到显著差异，尽管对于最小的过滤器，水头累积率估计的差异要大得多。对于大多数先导过滤器操作，建议D/D比为50或更大。包括24个参考文献、表格和图表。

The size of the filters used in a water treatment pilot study has a big impact on the cost of the pilot facility itself. It has been shown that errors can be avoided by maintaining an adequate ratio between filter column diameter and media diameter (D/d). The purpose of this study was to investigate the effect of this same scaleup parameter on the filtration process itself. Five pilot-filter columns were operated in parallel with a full-scale filter. In these tests, (D/d) ranged from 26:1 for the smallest column to 6,000:1 for the full-scale filter. No significant differences were observed in the mean rate of head loss buildup, the effluent turbidity, or the effluent particle count for any of the filters, although the variance in the estimate of rate of head buildup was much greater for the smallest filter. A D/d ratio of 50 or greater is recommended for most pilot-filter operations. Includes 24 references, tables, figures.