Quality monitoring method and system based on wastewater monitoring data

The invention relates to the technical field of control and regulation, in particular to a quality monitoring method and system based on wastewater monitoring data. According to the method, the optimal sampling frequency is obtained, and then the sampling frequency during subsequent water quality monitoring is adjusted by using the optimal sampling frequency. The method comprises the following steps: calculating the sensitivity degree of each index under each sampling frequency according to the sampling monitoring deviation ratio corresponding to each index and each acquisition moment under each sampling frequency, the flow velocity of a sampling point and the exceeding frequency of each index; calculating the objective weight of each index under each sampling frequency according to the sequence corresponding to each index under each sampling frequency; calculating the similarity between the monitoring data of each sampling frequency and the monitoring data of the highest sampling frequency according to the d