Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Everett J. Nichols0
Jeffrey F. Williams0
Date of Patent
January 2, 2007
Patent Application Number
10836609
Date Filed
April 30, 2004
Patent Primary Examiner
Patent abstract
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.
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