Reference : Some influences of sediments in aerated lagoons and waste stabilization ponds
Scientific journals : Article
Life sciences : Environmental sciences & ecology
http://hdl.handle.net/2268/18958
Some influences of sediments in aerated lagoons and waste stabilization ponds
English
Chabir, D. [> > > >]
El Ouarghi, H. [> > > >]
Brostaux, Yves mailto [Université de Liège - ULg > Gembloux Agro-Bio Tech > Gembloux Agro-Bio Tech >]
Vasel, Jean-Luc mailto [Université de Liège - ULg > Département des sciences et gestion de l'environnement > Assainissement et Environnement >]
2000
Water Science & Technology
IWA Publishing
42
10
237-246
Yes (verified by ORBi)
International
0273-1223
Londres
Royaume-Uni
[en] sediment oxygen demand ; modelling ; temperature
[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.
http://hdl.handle.net/2268/18958
http://www.iwaponline.com/wst/04210/wst042100237.htm

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