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7. Conclusion
The flow rates and concentrations of wastewater produced by on-site sewage systems are much more variable than in collective systems. Periods without wastewater input, lasting from a few days to several weeks, are present, requiring systems well adapted to these conditions. A review of the three main technological families and the performance measured under in-situ conditions shows that systems incorporating a biological filter are much better suited to the realities of on-site wastewater treatment. The performance of microstation-type systems is much more variable, due to inadequate sizing or maintenance, resulting in the discharge of sludge into the receiving environment. However, even where a filter medium is present, compact filters must be designed to meet fundamental criteria in terms of sizing (minimum 0.50 m 2 /EH), effective distribution...
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Glossary
Bibliography
- (1) - MINISTÈRES EN CHARGE DE L'ÉCOLOGIE ET DE LA SANTÉ, CERIB ET CSTB - Cadre destiné aux opérateurs économiques pour la procédure d'agrément des dispositifs d'assainissement non collectif. - http://www.assainissement-non-collectif.developpement-durable.gouv.fr/IMG/pdf/16_10_2023_-_cadre_de_la_procedure_ d_evaluation_anc_-_vf.pdf (2023)....
Standards and norms
- Small wastewater treatment plants for a total equivalent population (TEP) of up to 50 inhabitants – Part 1: prefabricated septic tanks. AFNOR - NF EN 12566-1+A1 - 2004
- Small wastewater treatment plants for a total equivalent population (TEP) of up to 50 inhabitants – Part 3: Domestic wastewater treatment plants ready for use and/or assembled on site. AFNOR - NF EN 12566-3+A2 - 2013
- Small wastewater treatment...
Regulations
Law no. 92-3 of January 3, 1992 on water (consolidated version of July 1 2006).
Council Directive 91/271/EEC of 21 May 1991 concerning urban waste-water treatment (consolidated version from 1 January 2014). OJEU L135 of May 30, 1991.
Arrêté du 7 septembre 2009 fixant les prescriptions techniques applicables aux installations...
Directory
Documentation – Training – Seminars (non-exhaustive list)
Interministerial portal on non-collective sanitation :
https://www.assainissement-non-collectif.developpement-durable.gouv.fr/
Technical Advisory Committee (CCFAT) :
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