An environmentally friendly surrogate method for measuring the soluble chemical oxygen demand in wastewater: use of three-dimensional excitation and emission matrix fluorescence spectroscopy in wastewater treatment monitoring

Gaining rapid knowledge of dissolved organic matter (DOM) proves to be decisive for wastewater treatment plant operators in efforts to achieve good treatment efficiency in light of current legislation. DOM can be monitored by application of fluorescence spectroscopy both online and in real time in o...

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Bibliographic Details
Published in:Environmental monitoring and assessment 2019-07, Vol.191 (7), p.421-8, Article 421
Main Authors: Goffin, Angélique, Guérin-Rechdaoui, Sabrina, Rocher, Vincent, Varrault, Gilles
Format: Article
Language:English
Subjects:
Analytical methods
Atmospheric Protection/Air Quality Control/Air Pollution
Chemical oxygen demand
Chemical Sciences
Dissolved organic matter
Earth and Environmental Science
Ecology
Ecotoxicology
Environment
Environmental Management
Environmental monitoring
Environmental science
Environmental Sciences
Factor analysis
Fluorescence
Fluorescence spectroscopy
Internet
Legislation
Monitoring
Monitoring/Environmental Analysis
Organic chemistry
Organic matter
Oxidation
Oxygen
Prediction models
Raw sewage
Sewage
Sewage disposal
Spectroscopy
Spectrum analysis
Wastewater
Wastewater treatment
Wastewater treatment plants
Water treatment
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Summary:Gaining rapid knowledge of dissolved organic matter (DOM) proves to be decisive for wastewater treatment plant operators in efforts to achieve good treatment efficiency in light of current legislation. DOM can be monitored by application of fluorescence spectroscopy both online and in real time in order to derive an assessment of DOM oxidation potential. This work presents an eco-friendly alternative method for measuring the soluble chemical oxygen demand (COD) in raw sewage by means of three-dimensional fluorescence spectroscopy. A peak-picking approach has been developed based on a previous parallel factor analysis (PARAFAC) model dedicated to Paris raw sewage. Fluorescence spectroscopy parameters were used to obtain a good prediction model of soluble COD ( r 2 = 0.799; p < 0.0001; n = 80) for raw sewage. The approach employed in this study serves as a guideline for purposes of implementing online wastewater monitoring and conducting environmentally friendly soluble COD measurements in the laboratory.
ISSN:0167-6369
1573-2959
DOI:10.1007/s10661-019-7570-5