Hazardous waste treatment
AssigneeImperial College of Science, Technology and Medicine
InventorColin Hills
Life of this patent
Estimating the term…
Abstract
A method of solidifying a waste or soil composition containing at least one contaminant species which comprises adding to said composition binder and optionally water, mixing the binder into the waste or soil material to form a mixture thereof and simultaneously during formation of the mixture and/or subsequently after formation of the mixture, treating the mixture with sufficient carbon dioxide to achieve setting and subsequent hardening of said mixture so as to produce a solidified waste or soil composition.
Claims16
A method of solidifying a waste or soil composition containing at least one contaminant species effective to retard or poison hydraulic or pozzolanic binder solidification said method comprising adding to said composition, hydraulic or pozzolanic binder and optionally water, mixing the binder into the waste or soil material to form a mixture thereof and subsequently after formation of the mixture, subjecting the mixture to accelerated carbonation using sufficient carbon dioxide to overcome retarding or poisoning of said binder solidification by said contaminant species and thereby achieve setting and subsequent hardening of said mixture into a solidified waste or soil composition.
A method of solidifying a waste or soil composition containing at least one contaminant species effective to retard or poison hydraulic or pozzolanic binder solidification said method comprising forming an admixture of a waste or soil composition containing said at least one contaminant species with a hydraulic or pozzolanic binder and optionally water, wherein one or more of said components have been carbonated by carbon dioxide prior to formation of said admixture, and wherein after formation of the mixture, the mixed components are further subjected to accelerated carbonation with sufficient additional carbon dioxide to overcome retarding or poisoning of said binder and thereby achieve setting and subsequent hardening of said mixture into a solidified waster or soil composition.
Dependencies are inferred from the claim text.