污水处理厂故障诊断专家系统

Diagnostic Expert System for WTP

开发了一个用于诊断城市污水处理厂日常运行故障的专家系统。系统采用了正反向混合推理机制 ,并采用故障树的形式将知识库中的知识组织形式向用户公开 ,便于用户使用和对系统的维护。现已用于北京某污水处理厂中。

A diagnostic expert system using qualitative reasoning has been developed for wastewater treatment plant operation. A diagnosis module to detect the fault in the activated sludge process is presented. The combined strategy of using both forward chaining and backward chaining within the expert system allows the number of questions asked to an operator to be minimized. Fault trees were used to represent the knowledge for fault diagnosis. The expert system was continuously being tested, not only in the laboratory, but also in a full scale treatment plant with the capacity of 40 000 cubic meters per day. And a successful experience was achieved.