How to reuse reverse osmosis concentrates?
1 answer
Une méthode courante est l'évaporation-cristallisation, qui permet de récupérer les sels en tant que sous-produits utiles. Les techniques de précipitation chimique sont également employées pour extraire des métaux lourds spécifiques, comme le cuivre ou le zinc.
Ensuite, des systèmes de traitement biologique, tels que les bioreacteurs à membranes, peuvent être utilisés pour dégrader les matières organiques résiduelles. Pour les applications agricoles, l'utilisation du concentrat en tant qu'irrigant est possible après une dilution appropriée et une évaluation de la toxicité.
Enfin, pour des applications industrielles, le concentrat peut être utilisé dans des tours de refroidissement ou des systèmes de lavage, réduisant ainsi la consommation d'eau potable. L'intégration de ces procédés dans un cadre de gestion circulaire de l'eau est cruciale pour optimiser l'efficacité et la durabilité des systèmes d'OI.
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