Feedbacks on performance tests with Filtralite® media compared to conventional media filters at pilot scale

C. Helmer*, O. Danel, J.-F. Robin, A. Brehant, SUEZ Environment CIRSEE, France

More stringent standards for drinking water quality and a global trend towards resource degradation have driven research toward improving the performance of treatment plants. Filtration remains a key step for drinking water treatment, being effective for the elimination of turbidity, colour and microorganisms. SUEZ is focused on continuous optimization of filtration performances aimed at improving the filtered water quality and/or reducing operating costs (energy, chemicals, water savings…). To this end, various approaches have been considered including the optimization of pretreatments and the replacement of traditional granular media with new ones such as Filtralite® products. Filtralite® is composed of expanded clay aggregates whose particle size (0,5-8 mm) and particle density (1050-1800 kg/m3) can be specifically selected. It offers innovative solutions to water facilities both for drinking water and wastewater as a goal of physical filtration or biological treatment. The use of this filter media concerns both the building of new plants and the refurbishment of existing plants. Today, Filtralite® is implemented worldwide with references for biological treatment especially for denitrification. The performances of this media for particle retention has been less investigated. In this context, a study was conducted to answer the following key questions:

Session: L13 - Depth Filtration and Adsorption - Granular Beds
Day: 24 October 2019
Time: 09:00 - 10:15 h

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