Influence of changes of the wastewater composition on the applicability of UV-absorption measurements at combined sewer overflows

The applicability of UV-absorption measurements at combined sewer overflows was investigated under different storm water conditions. Three specific rainfall events of different intensity, different duration and different intervals between the events were investigated. An individual evaluation of eac...

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Bibliographic Details
Published in:Water science and technology 2002-05, Vol.47 (2), p.73-78
Main Authors: Stumwoehrer, K, Matsche, N, Winkler, S
Format: Article
Language:English
Subjects:
Calibration
Correlation
Matrix methods
Monitoring
Pollution
Rainfall
Sewers
Spectrometers
Stormwater
Ultraviolet radiation
Wastewater
Water quality
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Summary:The applicability of UV-absorption measurements at combined sewer overflows was investigated under different storm water conditions. Three specific rainfall events of different intensity, different duration and different intervals between the events were investigated. An individual evaluation of each single event resulted in an acceptable correlation between the UV absorption and the pollution measured as COD. A combined evaluation of the different events exhibited a very poor correlation which could not be used as pollution control parameter. Since the calibration procedure of the spectrometer used was not flexible enough to distinguish between different wastewater matrices from the different storm events the applicability of this type of spectrometer for the control of storm water overflows is questionable.
ISSN:0273-1223