The importance of the acidogenic microflora in biological phosphorus removal

Laboratory and semi-industrial scale pilot plant experiments were carried out to study the possibility of simultaneous biological nitrogen and phosphorus removal under European winter temperature conditions. Whereas nitrogen removal requires very long aerated sludge ages, phosphorus removal seems to...

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Bibliographic Details
Published in:Water science and technology 1985-11, Vol.17 (11-12), p.199-212
Main Authors: MEGANCK, M, MALNOU, D, LE FLOHIC, P, FAUP, G. M, ROVEL, J. M
Format: Article
Language:English
Subjects:
Aeration
Age
Applied sciences
Biological and medical sciences
Biological treatment of waters
Biotechnology
Environment and pollution
Exact sciences and technology
Fatty acids
Fundamental and applied biological sciences. Psychology
General purification processes
Industrial applications and implications. Economical aspects
Influents
Low temperature
Microbiological studies
Microflora
Nitrogen removal
Phosphorus
Phosphorus removal
Pollution
Removal
Sludge
Temperature requirements
Uptake
Wastewater
Wastewaters
Water treatment and pollution
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Summary:Laboratory and semi-industrial scale pilot plant experiments were carried out to study the possibility of simultaneous biological nitrogen and phosphorus removal under European winter temperature conditions. Whereas nitrogen removal requires very long aerated sludge ages, phosphorus removal seems to be somewhat inhibited by the low sludge loadings. Experiments with fatty acid addition to the influent wastewater have shown the acidogenic phase to be the step that was most affected by these low load conditions. The phosphorus release and uptake mechanism in itself may be slowed down by lower temperatures, but still has some activity. A microbiological study of the organisms in the sludge was undertaken in order to discover which organisms were responsible for the different steps in the phosphorus removal mechanism.
ISSN:0273-1223
1996-9732
DOI:10.2166/wst.1985.0233