To solve the problems for incomplete and untimely identification of the operating status in existing urban domestic sewage treatment process,a systematic study on the identification method of operational status was proposed using the A2O process as an example.Terminal pollutant monitoring indicators,operational process parameters,power consumption of sewage treatment facilities,sludge discharge,and equipment operation status were used to identify the process operation status.The conventional and indirect discrimination methods for process operation status were determined.On this basis,the relationships between the normal state,abnormal phenomena,abnormal causes,and troubleshooting measures were analyzed from the perspective of process operating parameters,mud and water properties indicators,and equipment operating status,respectively.A software with rapid identification and analysis of faults was designed,providing a feasible way to quickly identification the operating status of A2O process.
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