After that, by analyzing the fault types and parameters of operation state for wastewater treatment on activated sludge process, a fuzzy expert system for fault diagnosis is designed in detail.

接下来，本文通过对活性污泥污水处理工艺的故障和运行参数的分析，对污水处理故障诊断模糊专家系统进行了详细设计。

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The aerobic bio-treatment process with the activated sludge method is a complex system which has the properties of essential nonlinearity and strong disturbance to treat city sewage.

城市污水活性污泥法好氧生物处理过程是一个具有本质非线性特性和强干扰的复杂系统。

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In the activated sludge process, low treatment efficiency, sludge loss and large amount of foams forming will happen when the treatment system is shocked by high organic loads.

活性污泥处理废水时，在受到冲击时，处理效率下降，污泥流失，有时会出现大量的泡沫。

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