消毒是水处理的基础，使用的系统必须坚固、可靠，并达到要求的性能。Severn Trent Water已经开发并正在使用计算机程序来简化设计过程，并对用于满足这些需求的设备和控制系统进行标准化，从而降低成本。该软件可以在PC上使用，并为各种各样的用户提供足够的灵活性，以实现良好的效果。水力模拟程序提供了另一种工具，帮助工程师设计消毒系统。

Disinfection is fundamental to water treatment and the systems used must be robust, reliable and attain the required performance. Severn Trent Water has developed, and is using, computer programs to streamline the design process and standardize on the equipment and control systems used to meet these demands, and so reduce costs. The software can be used on a PC and provides sufficient flexibility for a wide variety of users to achieve good results. A hydraulic simulation program provides another tool to assist the engineer in the design of disinfection contacting systems.