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INTRODUCTION
A home's wastewater drainage system is essential to its healthy, long-lasting operation. Non-collective sanitation (NCS) refers to individual installations for the treatment of domestic wastewater. These systems concern detached houses with up to 20 rooms that are not served by a public wastewater collection network, and which must treat their own wastewater before discharging it into the natural environment.
Wastewater with a low pollutant load comes exclusively from kitchens and bathrooms, i.e. from sinks, washbasins, showers and bathtubs, not forgetting dishwashers, washing machines and tumble dryers (this is grey water).
Black water (BW) comes exclusively from toilets; it's also known as "black water".
Wastewater treatment plants must be able to treat all of this wastewater and EV containing potentially pathogenic micro-organisms, organic matter, nitrogen, phosphorus or suspended matter; polluted wastewater can be the source of significant environmental nuisance and health risks.
After collection, domestic wastewater is pre-treated in a watertight tank, which allows suspended solids in the collected water to settle out, floating elements to be retained and a first stage of degradation to take place.
The wastewater is then sent to the treatment plant, where pollution is eliminated by biochemical degradation (microbiological activity) of the water as it passes through a natural reactor consisting of either natural soil or reconstituted soil.
approval procedure transferred to notified bodies (1 March 2021, ASAP law)
As of 1 er March 2021, and in accordance with Article 33 of Law no. 2020-1525 of December 7, 2020 on the acceleration and simplification of public action (known as the "ASAP Law"), approvals for treatment devices will no longer be issued by the ministries in charge of health and the environment, but by the notified bodies competent in the field of sanitation products and designated by order of the ministers in charge of the environment and health, namely CERIB and CSTB. Consequently, approval notices will no longer be published in the Journalofficiel, but directly on the ministerial portal for non-collective sanitation.
Approval notices will retain the same format as JORF notices, and will include a technical appendix setting out the characteristics of the approved treatment system. This measure therefore has no impact on the activities of public non-collective sanitation services (SPANC), which will be able to continue carrying out their inspection activities on the basis of approval...
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The Ultimate Scientific and Technical Reference
KEYWORDS
wastewater | on-site sanitation | treatment
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Non-collective sanitation: management techniques
Standards and norms
- Small wastewater treatment plants for a total population equivalent (pte) of up to 50 inhabitants – part 1: prefabricated septic tanks. AFNOR - NF EN 12566-1 - 2016
- Grease traps – Part 1: Principles for design, performance and testing, marking and quality control. AFNOR - NF EN 1825-1 - 2004
- Grease separation systems – Part 2: Nominal size selection, installation, service and maintenance. AFNOR - NF EN...
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Direct sanitation :
https://assainissement-direct.fr/
Frans Bonhomme :
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