研究了低温条件对明矾和三氯化铁去除浊度的影响。实验工作涉及在极端低温和室温条件下使用这些混凝剂去除水样中的高岭土。还包括对在低温下发生故障的全尺寸处理厂的数据分析。温度对混凝的影响显著，低温条件下浊度去除效率急剧下降。明矾凝固受影响最严重。沉淀研究表明，温度不会显著抑制金属离子的沉淀速率。包括5个参考文献、表格、图表。

The effects of low-temperature conditions on the use of alum and ferric chloride for the removal of turbidity were studied. Experimental work involved the use of these coagulants for the removal of kaolin from water samples under both extreme-low-temperature and roomtemperature conditions. Analysis of data from a full-scale treatment plant that experienced failure at low temperature was also included. Temperature effects on coagulation were significant, with lowtemperature conditions producing sharp decreases in turbidity removal efficiency. Alum coagulation was most severely affected. Precipitation studies showed that temperature did not significantly inhibit the rate of metal-ion precipitation. Includes 5 references, table, figures.