冻融处理是处理水处理残余物的有效方法。多年来，该工艺一直使用自然室外冷冻，但由于缺乏有关该工艺的基本信息，机械工艺的发展受到阻碍。本文介绍了为研究初始固体含量、固化时间和冷冻速率对美国东北部五个水处理设施残留物脱水性的影响而进行的实验结果。冻融处理后，所有残留物的脱水性急剧增加。在所用的实验程序中，冻融后的脱水性与速率无关。然而，初始固形物含量和固化时间强烈影响脱水性，这对于在高固形物含量下冷冻并长期固化的残余物来说是最好的。滤饼固形物含量达到40%（重量比）。 一般来说，对于冻融处理前表现出最佳脱水性的残留物，该过程最为成功。最后，确定了成本最优的冷冻条件。包括33个参考文献、表格和图表。

Freeze-thaw conditioning is an effective way to process water treatment residuals. For many years the process has used natural out-of-doors freezing, but development of mechanical processes has been hindered by a lack of fundamental information about the process. This article presents the results of experiments performed to study the effects of initial solids content, curing time, and freezing rate on dewaterability of residuals from five water treatment facilities in the northeastern United States. Dewaterability of all residuals sharply increased following freeze-thaw conditioning. In the experimental procedure used, dewaterability following freezing and thawing was independent of rate. However, initial solids content and curing time strongly affected dewaterability, which was best for residuals frozen at high solids content and cured for long times. Cake solids contents >40 percent w/w were achieved. Generally, the process was most successful for residuals that exhibited the best dewaterability before freeze-thaw conditioning. Finally, cost-optimum freezing conditions were determined. Includes 33 references, tables, figures.