Low-impact delivery system for in situ treatment of...

Details Low-impact delivery system for in situ treatment of... Low-impact delivery system for in situ treatment of...

B - Operations, Transporting

01

J

B01J 20/20 (2006.01) B01J 20/12 (2006.01) B09C 1/08 (2006.01) C02F 1/68 (2006.01) C02F 1/28 (2006.01)

Patent

CA 2666916

An agglomerate for use in economical bulk treatment of contaminated sediments with minimal environmental impact is formed from a sorbent, bentonite clay and sand. The agglomerate has sufficient density so as to sink through a water column into sediment below the water column and is still sufficiently light as to be capable of mixing with the sediment when subjected only to bioturbation. The agglomerate can be formed into pellets and applied to a water column over contaminated sediment by broadcast methods, so as to permit economical remediation of contaminated sediment with negligible environmental impact.

L'invention concerne un agglomérat devant être utilisé dans le traitement économique de sédiments contaminés en vrac avec un impact environnemental minimal, qui est formé d'un sorbant, d'argile de bentonite et de sable. L'agglomérat a une densité suffisante pour couler à travers une colonne d'eau dans un sédiment sous la colonne d'eau mais est encore suffisamment léger pour être capable de se mélanger avec le sédiment lorsqu'il n'est soumis qu'à une bioturbation. L'agglomérat peut être formé en pastilles et appliqué à une colonne d'eau sur un sédiment contaminé par des procédés de diffusion, de façon à remédier économiquement au sédiment contaminé avec un impact environnemental négligeable.

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