On-line monitoring for control of a pilot-scale sequencing batch reactor using a submersible UV/VIS spectrometer

A submersible UV/VIS spectrometer was used to monitor a pilot-scale sequencing batch reactor (SBR). The instrument utilises the whole UV/VIS range between 200 and 750 nm. With just one single instrument nitrate, organic matter and suspended solids can be measured simultaneously. The spectrometer is...

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Bibliographic Details
Published in:Water science and technology 2004-01, Vol.50 (10), p.73-80
Main Authors: Langergraber, G, Gupta, J K, Pressl, A, Hofstaedter, F, Lettl, W, Weingartner, A, Fleischmann, N
Format: Article
Language:English
Subjects:
Batch reactors
Bioreactors
Cleaning
Environmental Monitoring - methods
Nitrates - analysis
Optimization
Organic Chemicals - analysis
Organic matter
Reactors
Sequences
Sequencing
Sequencing batch reactor
Solid suspensions
Spectrophotometry, Ultraviolet - methods
Submersibles
Suspended particulate matter
Suspended solids
Time Factors
Ultraviolet radiation
Water Pollutants, Chemical - analysis
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Description
Summary:A submersible UV/VIS spectrometer was used to monitor a pilot-scale sequencing batch reactor (SBR). The instrument utilises the whole UV/VIS range between 200 and 750 nm. With just one single instrument nitrate, organic matter and suspended solids can be measured simultaneously. The spectrometer is installed directly in the reactor, measures in real-time, and is equipped with an auto-cleaning system using pressured air. The paper shows the calibration results for measurements in the SBR tank, time series for typical SBR cycles, and proposes possible ways for optimisation of the operation by using these measurements.
ISSN:0273-1223
1996-9732
DOI:10.2166/wst.2004.0613