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Utilisation d'Eichhornia crasspies dans la purification des eaux usées

Utilisation d'Eichhornia crasspies dans la purification des eaux usées


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About the Book

Les systèmes de jacinthes d'eau sont très efficaces pour éliminer les polluants des eaux usées. L'efficacité de l'élimination de l'azote varie de 10 à 90%. Les résultats du système de jacinthe d'eau d'Iron Bridge en Floride, aux États-Unis, ont montré que l'élimination du phosphore était de 35 à 80 %. La même installation a réussi à éliminer environ 60 % de la DBO et 43 % des matières en suspension des eaux usées. Ces systèmes peuvent également éliminer efficacement les métaux lourds tels que le chlore, le cadmium, le cuivre et d'autres. Lors d'une expérience, 72 % du cadmium a été éliminé des eaux usées par la jacinthe d'eau. Les plantes aquatiques éliminent les polluants en les assimilant directement dans leurs tissus et en fournissant un environnement approprié aux micro-organismes pour transformer les polluants et réduire leurs concentrations. Les processus biochimiques/physiochimiques qui fonctionnent dans ces systèmes comprennent la nitrification/dénitrification et la volatilisation de l'ammoniac. Les nutriments et les métaux lourds accumulés sont éliminés des systèmes aquatiques par la récolte des plantes et le dragage des sédiments. La jacinthe d'eau élimine donc efficacement les eaux usées contenant des nutriments.


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Product Details
  • ISBN-13: 9786206668305
  • Publisher: KS Omniscriptum Publishing
  • Binding: Paperback
  • Language: French
  • Returnable: N
  • Weight: 154 gr
  • ISBN-10: 6206668304
  • Publisher Date: 14 Nov 2023
  • Height: 229 mm
  • No of Pages: 64
  • Spine Width: 4 mm
  • Width: 152 mm


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