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Some influences of sediments in aerated lagoons and waste stabilization ponds
Chabir, D.; El Ouarghi, H.; Brostaux, Yves et al.
2000In Water Science and Technology, 42 (10), p. 237-246
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Keywords :
sediment oxygen demand; modelling; temperature
Abstract :
[en] Respirometric tests have been undertaken on sediments in aerated lagoons and waste stabilization ponds to quantify their oxygen demand and to determine the main factors governing the process. Factors such as seasonal variations, temperature, substrate, sediment layer thickness, density of macro-invertebrates and suspended sediments were investigated. The results showed that temperature and substrate concentration are the main factors that influence sediment oxygen demand; followed by spatial heterogeneity and resuspension of sediments, whereas the density of macro-invertebrates could have an effect in summer (hot season). Sediment layer thickness had no effect. A model of sediment oxygen demand is developed for the two main factors (temperature and substrate) with an r2 of 0.98.
Disciplines :
Environmental sciences & ecology
Author, co-author :
Chabir, D.
El Ouarghi, H.
Brostaux, Yves  ;  Université de Liège - ULiège > Gembloux Agro-Bio Tech > Gembloux Agro-Bio Tech
Vasel, Jean-Luc ;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Assainissement et Environnement
Language :
English
Title :
Some influences of sediments in aerated lagoons and waste stabilization ponds
Publication date :
2000
Journal title :
Water Science and Technology
ISSN :
0273-1223
eISSN :
1996-9732
Publisher :
IWA Publishing, Londres, United Kingdom
Volume :
42
Issue :
10
Pages :
237-246
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 18 August 2009

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