开发了一个计算机程序来模拟水处理过程中消毒副产物的形成、天然有机物的去除、无机水质的变化和消毒剂的衰变。本文介绍了模拟总三卤甲烷（TTHMs）形成、总有机碳（TOC）去除、明矾凝聚紫外吸收、碱度和pH变化的方程式。这些方程式仅代表整个计算机模型的一小部分。将模型模拟与有限的观测值集进行比较。该模型的中心趋势是将产水pH值预测低估4%，将产水TOC预测低估7%，将模拟配水系统TTHMs预测低估20%- 30%。本文最后对模型局限性和研究需求进行了讨论。包括56个参考文献、表格、图表。

A computer program was developed to simulate disinfection byproduct formation, removal of natural organic matter, inorganic water quality changes, and disinfectant decay in water treatment processes. This article presents equations that simulate the formation of total trihalomethanes (TTHMs), removal of total organic carbon (TOC) and ultraviolet absorbance by alum coagulation, and changes in alkalinity and pH. These equations represent only a small fraction of the entire computer model. Model simulations are compared with limited sets of observed values. The central tendency of the model is to underpredict finished-water pH by 4 percent, finished-water TOC by 7 percent, and simulated distribution system TTHMs by 20-30 percent. A discussion of model limitations and research needs concludes the article. Includes 56 references, tables, figures.