Consequences to water suppliers of collecting rainwater on housing estates

Abstract : The collection, storage and use of rainwater from roofs reduce the need for potable water. However if water suppliers are to decrease their infrastructure costs as well as their operational costs (due to water savings), the rainwater system has to provide most of the time a significant percentage of the water demand. This paper adopts the view point of the water suppliers and investigates how reliable this source of water is in the case of a housing estate, considering WC flushing as the only water demand. A housing estate was modelled and different realistic input scenarios (water demand for WC flushing, storage capacity, roof area, and rainfall) were defined. Three indicators were exhibited. The variability generated by each input on the indicators was evaluated. The indicators were estimated for 63 homogeneously distributed French cities. Among the indicators exhibited in this paper, the most relevant one is the percentage of water supplied from the tank that is secured during 95% of the days of the simulation. The main conclusion is that the optimum way of determining the storage capacity of the rainwater collection system is not the same from the viewpoint of the users than from the viewpoint of the water suppliers. Indeed, water suppliers tend to require bigger tanks in order to take into account the rainwater collection systems in their management plan.
Type de document :
Article dans une revue
Water Science and Technology, IWA Publishing, 2009, 60 (3), pp.543-553
Liste complète des métadonnées

Littérature citée [5 références]  Voir  Masquer  Télécharger

https://hal-enpc.archives-ouvertes.fr/hal-00816788
Contributeur : Auguste Gires <>
Soumis le : vendredi 8 avril 2016 - 13:27:29
Dernière modification le : vendredi 23 mars 2018 - 16:38:14
Document(s) archivé(s) le : lundi 14 novembre 2016 - 22:46:11

Fichier

Gires_Degouvello_WST_2009_post...
Fichiers produits par l'(les) auteur(s)

Identifiants

  • HAL Id : hal-00816788, version 1

Citation

Auguste Gires, Bernard De Gouvello. Consequences to water suppliers of collecting rainwater on housing estates. Water Science and Technology, IWA Publishing, 2009, 60 (3), pp.543-553. 〈hal-00816788〉

Partager

Métriques

Consultations de la notice

328

Téléchargements de fichiers

167