This paper describes a method to design the computer software used for fully automatic wastewater COD determining. The program chart and some practical skills in programming are considered too.

本文介绍了实现废水COD全自动监测的计算机应用软件设计方法，程序框图以及实现中采用的编程技巧。

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The development, basic principal, key functionality and a practical example of Aspen Water software, which is specially applied to the design of the water and wastewater system, are introduced.

通过介绍美国艾斯苯技术公司水软件的开发，基本原理，主要功能，工作步骤和应用实例，说明这个软件是专门用于水和废水系统设计和优化的软件。

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