依据兖州市污水处理厂的控制系统设计思路，讨论了在污水处理过程中，采用可编程序控制器（P LC） 控制系统的功能。

On the basis of the control system design in sewage treatment factory in Yanzhou City, we discussed the function of the PLC control system in sewage treatment processing.

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本文根据城市污水处理厂的实际案例，分析并设计了基于现场总线技术的城市污水处理自动控制系统。

In this paper, according to the factual case of city sewage treatment plant, we analyzed and designed an automatic control system for swage treatment what is based on field bus technology.

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通过一个城市污水处理厂自动控制系统的选取与设汁过程作为实例，说明了可编程逻辑控制器(PLC)自动控制方案是当今城市污水处理厂的最佳选择。

An automatic control system for one municipal wastewater treatment plant is selected, designed and discussed. The results indicate that PLC control system is the best choice.

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