Can we decode the messages of activated sludge through the respirograms?

Article

Hoque, Muhammad A., Aravinthan, Vasantha and Pradhan, Nishant M.. 2009. "Can we decode the messages of activated sludge through the respirograms?" Water, Air and Soil Pollution: an international journal of environmental pollution. 9 (5/6), pp. 449-459. https://doi.org/10.1007/s11267-009-9238-6
Article Title

Can we decode the messages of activated sludge through the respirograms?

ERA Journal ID1992
Article CategoryArticle
AuthorsHoque, Muhammad A. (Author), Aravinthan, Vasantha (Author) and Pradhan, Nishant M. (Author)
Journal TitleWater, Air and Soil Pollution: an international journal of environmental pollution
Journal Citation9 (5/6), pp. 449-459
Number of Pages11
Year2009
Place of PublicationLeiden, Netherlands
ISSN0049-6979
1567-7230
1573-2932
Digital Object Identifier (DOI)https://doi.org/10.1007/s11267-009-9238-6
Abstract

Wastewater contains varieties of carbonaceous and nitrogenous compounds that undergo complicated biodegradation process in wastewater treatment plants. How these different compounds are degraded by activated sludge in aerobic conditions is still a mystery. Researchers have been trying to interpret it using the oxygen uptake rate (OUR) derived from the respirograms of respective substrates. Several models have been proposed to interpret the substrate removal mechanisms using the experimental observations. Have we succeeded in understanding the messages by activated sludge correctly using these models? In this paper, the distinctive nature of the respirograms when activated sludge is fed with different substrates and the biokinetic models that have been developed to explain the substrate removal mechanisms using derived OUR profiles are reviewed. In addition, a sensitivity study was conducted on the recently evolved simultaneous storage and growth model to investigate the influence of key parameters on OUR profiles during the biodegradation process.

Keywordsrespirogram; oxygen uptake rate (OUR); substrate removal mechanisms; activated sludge models
ANZSRC Field of Research 2020401199. Environmental engineering not elsewhere classified
400410. Wastewater treatment processes
349999. Other chemical sciences not elsewhere classified
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Byline AffiliationsAustralian Centre for Sustainable Catchments
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