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Assainissement non collectif en France : synthèse du suivi in situ des installations réalisé de 2011 à 2016

Abstract : An assessment of 1 286 validated data from 231 on-site sanitation facilities was carried during 6 years in France. Facilities are classified in 3 families, 13 categories and 33 systems according to sanitation processes and industrial technologies developed by manufacturer. Classes of treated wastewater quality were created based on the analysis of the French regulation used for wastewater treatment. The frequency of curative maintenance is analyzed using fuzzy logic. Then, these two criteria are jointly analyzed and allow assessing 18 systems out of 33. Authors, members of the national public group "assessment of on-site sanitation systems", provide objective information on the quality of treated wastewater and curative maintenance of twenty systems under real operating conditions. Systems that obtain an "acceptable" quality class for both treated wastewater quality and frequency of curative maintenance are all from the Biofilm Systems on Fine Media (BSFM) family: i) traditional sand filter (S1) and 2 approved systems: ii) constructed wetland system (CW) and iii) one system of the coconut shavings category (CS2). Hence, only 12% of approved systems studied in this project are "acceptable" for both treated wastewater quality and frequency of curative maintenance. This study gives scientific and technical information for political stakeholders at different territory scales: Municipality, Public entities in charge of the on-site sanitation service (Spanc), French departments, Water agencies, Ministry in charge of on-site wastewater treatment and European Commission.
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Submitted on : Saturday, May 16, 2020 - 5:25:28 PM
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L. Olivier, Vivien Dubois, Philippe Branchu, Catherine Boutin, P. Artuit, et al.. Assainissement non collectif en France : synthèse du suivi in situ des installations réalisé de 2011 à 2016. Techniques Sciences Méthodes , ASTEE/EDP Sciences, 2018, pp.83-96. ⟨10.1051/tsm/201807083⟩. ⟨hal-02609227⟩

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