Treatment of hazardous waste
AssigneeStablex A.G.
InventorChristopher L. Chappell
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Abstract
A process for treating organically contaminated liquid hazardous waste comprises adding to the waste Portland cement, fly ash and activated carbon.
Claims9
A method of treating a liquid hazardous waste which may contain a significant proportion of an organic contaminant such method comprising the steps of adding to the liquid waste calcium-containing cement and an aluminium silicate or an alumino-silicate thereby forming a flowable slurry and thereafter allowing the slurry to set into a rigid rock-like mass and adding to the slurry an amount of active carbon sufficient to reduce to an acceptable level the leaching of the waste from the rock-like mass.
A method of inhibiting leaching of a hazardous liquid waste material from a rock-like mass in which the hazardous waste has been entrapped by a process comprising
- (1) mixing with a liquid containing said waste material
- (a) a cement which contains calcium, and
- (b) an aluminum silicate or alumino-silicate thereby forming a flowable slurry, and thereafter
- (2) allowing the slurry to set into a rigid rock-like mass, said method comprising mixing active carbon with said flowable slurry prior to setting thereof into said rock-like mass to reduce the leaching of the waste material from the resulting rock-like mass.
Dependencies are inferred from the claim text.