Real-time monitoring method and real-time monitoring system for tail water discharge of sewage plant based on fluorescent watermark

Abstract

The invention provides a real-time monitoring method and a real-time monitoring system for tail water discharge of a sewage plant based on fluorescent watermark and deep mining of fluorescence data. Three-dimensional fluorescence raw data of a water sample are measured by a fluorospectro photometer with a fluorescent probe in real time, and effective fluorescent components of the water sample areextracted by adopting parallel factor analysis (PARAFAC), thereby characterizing structural features and intensity of dissolved organic matters of a water body more accurately and comprehensively; andPARAFAC fluorescent component data are trained by using an SOM (Self-Organizing Map) neutral network, output sensitive neurons and the distribution space are observed, rapid classification of the water sample is performed, and the state (normal or abnormal) of the tail water discharge is evaluated in real time. The analysis monitoring method provided by the invention has the advantages of flexible control, high degree of automation, simple operation and low operation cost; the state of the tail water discharge of the sewage plant is reflected in real time; and timely automatic alarm and grasping of field situation can be realized when the state of the tail water discharge is abnormal, basis is provided for adjusting a process of the sewage plant as quick as possible, and stable operationof the sewage plant is ensured.

Description

technical field [0001] The invention relates to a real-time monitoring system for tail water discharge of a sewage plant based on fluorescence water marks and deep mining of fluorescence data, which belongs to the analysis method in the fields of sewage plant operation management and water environment monitoring. Background technique [0002] With the growth of population and the development of national economy, the contradiction between supply and demand of water resources has become increasingly prominent. At present, except for a small part of the tail water discharged from the urban sewage treatment plant for reuse, most of it is directly discharged into the waters near the sewage plant. The tail water is the sewage after the biochemical treatment of the sewage treatment plant. The tail water has a large amount of water, contains nitrogen and phosphorus, toxic and harmful substances, pathogenic microorganisms, etc., and it will affect the water quality and ecology of sur...

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Problems solved by technology

However, the simple peak-finding method cannot analyze the overlapping fluorescent peaks, which increases the difficulty of qualitative analysis of fluorescent groups

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