A three-dimensional fluorescence-based activated sludge quantitative detection method and system
By employing a quantitative detection method based on three-dimensional fluorescence, and utilizing the formula derived from Lambert-Beer's law and the least squares method for parameter fitting, the nonlinearity problem in the detection of activated sludge concentration and biomass was solved, enabling online monitoring and high-frequency data acquisition, and improving the accuracy and stability of the detection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- GUANGZHOU UNIVERSITY
- Filing Date
- 2026-05-14
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies for detecting activated sludge concentration and biomass suffer from problems such as long detection cycles, difficulty in acquiring data at high frequencies, non-linear or saturated fluorescence intensity with increasing concentration in high-turbidity systems, and easy drift in empirical calibration, making it difficult to reliably convert to concentration.
A quantitative detection method based on three-dimensional fluorescence was adopted. Under a fixed flow measurement configuration and parameters, an explicit quantitative relationship between fluorescence intensity and sludge concentration was established. The conversion between fluorescence intensity and sludge concentration was performed using the formula derived from Lambert-Beer's law. Combined with the least squares method to fit the parameters, online monitoring was achieved.
It enables online conversion and high-frequency monitoring of activated sludge concentration and biomass-related indicators, reduces the bias risk of traditional methods, improves the comparability and applicability of results, and is suitable for integration with existing wastewater treatment monitoring platforms.
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