Method for removing cryptosporidium oocysts from water

Details Method for removing cryptosporidium oocysts from water Method for removing cryptosporidium oocysts from water

C - Chemistry, Metallurgy

02

F

C02F 1/52 (2006.01)

Patent

CA 2563211

A method for stabilizing and removing Cryptosporidium oocysts or Giardia cysts from water. The method comprises adding chitosan, a salt or solution of chitosan to water containing Cryptosporidium oocysts or Giardia cysts and a halogenating agent. The method may also include adding a secondary polyelectrolyte flocculant to the water. The resulting flocs are filtered to remove the Cryptosporidium oocysts or Giardia cysts.

L'invention concerne un procédé destiné à stabiliser et éliminer des oocystes de Cryptosporidium ou des cystes de Giardia contenus dans une eau. Ce procédé consiste à ajouter du chitosane, un sel ou une solution de chitosane dans une eau contenant des oocystes de Cryptosporidium ou des cystes de Giardia et un agent halogénant. Ce procédé peut également consister à ajouter un floculant polyélectrolytique secondaire dans cette eau. Les flocons résultants sont filtrés en vue de l'élimination des oocystes de Cryptosporidium ou des cystes de Giardia.

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