What is the total cost per year (for 1l) of seawater desalination by reverse osmosis?
1 answer
1. **Énergie**: L'osmose inverse nécessite généralement entre 3 à 6 kWh/m³. Avec un coût moyen de l'électricité en France d'environ 0,15 €/kWh, cela représente environ 0,45 à 0,90 €/m³.
2. **Maintenance et Opérations**: Les coûts opérationnels incluent le remplacement des membranes tous les 5 à 10 ans, les produits chimiques pour le nettoyage, et les pièces de rechange. Cela peut ajouter environ 0,20 à 0,30 €/m³.
3. **Amortissement des Installations**: Basé sur la durée de vie typique de 20 à 30 ans, les coûts d'infrastructure peuvent s'élever à environ 0,30 à 0,50 €/m³.
En somme, le coût total par m³ se situe entre 0,95 et 1,70 €, soit entre 0,00095 et 0,0017 €/L. Cela représente un coût annuel de 0,95 à 1,70 € par litre pour une production continue.
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