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In-situ comparison of hydraulic behaviour of six different intermittent sand filters fed by a facultative pond

Abstract : In the Aurignac wastewater treatment plant, six intermittent sand filters with three different media: river sand, crushed sand and river sand with reeds and two different media heights: 25 and 65cm are used as a polishing treatment. Their hydraulic behaviours are studied by a tracing method and infiltration rate monitoring. Filters are fed by treated water from only one facultative waste stabilisation pond. The study shows that infiltration rates differ for each kind of medium which is the sign of different hydraulic behaviours explained more precisely by tracing results. The hydraulic behaviour of the filters has been compared for three points: feeding regime, filter medium characteristics and the presence or not of a deposit on the top of the filters.
Mots-clés : CEMAGREF QELY EPU AURIGNAC
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Submitted on : Thursday, June 3, 2021 - 10:15:53 PM
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  • HAL Id : hal-02583900, version 1
  • IRSTEA : PUB00015940

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Catherine Boutin, A. Torrens, D. Meauxsoone. In-situ comparison of hydraulic behaviour of six different intermittent sand filters fed by a facultative pond. 9ème conférence sur les marais artificiels et 6ème conférence sur le lagunage naturel, Avignon, 26 Septembre - 1er octobre 2004, Oct 2004, Avignon, France. pp.7. ⟨hal-02583900⟩

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