Alum pellets

C - Chemistry – Metallurgy – 02 – F

Patent

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Details

C02F 1/68 (2006.01) C02F 1/52 (2006.01)

Patent

CA 2483176

Compositions including pellets of alum, a smectite mineral material and optionally sodium or calcium carbonate that can be delivered to a phosphate impoundment located at the bottom of a body of water at the bottom. The pellets of alum, smectite mineral material and optionally sodium or calcium carbonate are dropped through the body of water so that the alum is released when the pellet reaches the bottom of the impoundment thereby treating the phosphates.

La présente invention concerne des compositions comprenant de la grenaille de sulphate d'aluminium, une smectite et éventuellement du carbonate de sodium ou de calcium qui peuvent être distribués sur une retenue de phosphate située au fond d'un plan d'eau. On laisse tomber la grenaille de sulphate d'aluminium, la smectite et éventuellement le carbonate de sodium ou de calcium dans le plan d'eau de sorte que le sulphate d'aluminium est libéré lorsque la grenaille atteint le fond de la retenue, ce qui permet ainsi de traiter les phosphates.

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