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3. Effluents: qualitative aspects
3.1 Rainwater
3.1.1 Rainwater is never clean
Water in clouds accumulates dissolved gases, suspended particles and dissolved substances as it passes through the atmosphere. It can also be loaded with harmful substances over large industrial agglomerations, as well as bacteria.
When rainwater falls on impermeable surfaces such as pavements, sidewalks and roofs, it cannot infiltrate the soil. As a result, it runs off these surfaces, collecting various pollutants before reaching drainage systems...
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Effluents: qualitative aspects
Effluents: quantitative aspects
Bibliography
Standards and norms
- sanitation facilities – Title I: networks - Fascicule n° 70 -
- sanitation facilities – Title II: Stormwater collection, conveyance and storage facilities - Fascicule n° 70 -
- équipement d´installations de pompage pour réseaux d'évacuation et d'assainissement - Fascicule 81-1 -
- mise en œuvre et essai des branchements et collecteurs d'assainissement. - NF EN 1610 -
- réseaux d'évacuation...
Regulations
European Directive of May 21, 1991 concerning urban waste water treatment.
Arrêté du 22 juin 2007 relatif à la collecte, au transport et au traitement des eaux usées des agglomérations d'assainissement ainsi que à la surveillance de leur fonctionnement et de leur efficacité, et aux dispositifs d'assainissement non collectif recevant une charge brute de pollution organique supérieure à 1,2 kg/j de DBO...
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