Desalination methods and systems that include carbonate...

C - Chemistry – Metallurgy – 02 – F

Patent

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C02F 1/52 (2006.01) C02F 1/04 (2006.01) C02F 1/44 (2006.01) C02F 5/02 (2006.01) C04B 7/02 (2006.01)

Patent

CA 2659451

Desalination methods that include carbonate compound precipitation are provided. In certain embodiments, feed water is subjected to carbonate compound precipitation conditions prior to desalination. In certain embodiments, desalination waste brine is subjected to carbonate compound precipitation conditions. In yet other embodiments, both feed water and waste brine are subjected to carbonate compound precipitation conditions. Aspects of embodiments of the invention include carbone dioxide sequestration. Embodiments of the invention further employ a precipitate product of the carbonate compound precipitation conditions as a building material, e.g., a cement. Also provided are systems configured for use in methods of the invention.

L'invention porte sur des procédés de dessalement qui comprennent une précipitation de composés de type carbonate. Dans certains modes de réalisation, de l'eau d'alimentation est soumise à des conditions de précipitation de composés de type carbonate avant le dessalement. Dans certains modes de réalisation, de la saumure résiduaire de dessalement est soumise à des conditions de précipitation de composés de type carbonate. Dans encore d'autres modes de réalisation, à la fois l'eau d'alimentation et la saumure résiduaire sont soumises à des conditions de précipitation de composés de type carbonate. Des aspects de modes de réalisation de la présente invention comprennent une séquestration de dioxyde de carbone. Des modes de réalisation de l'invention emploient en outre un produit précipité des conditions de précipitation de composés de type carbonate comme matériau de construction, par exemple, un ciment. L'invention porte également sur des systèmes configurés pour être utilisés dans les procédés de l'invention.

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