Process for disinfecting organic waste sludge

Details Process for disinfecting organic waste sludge Process for disinfecting organic waste sludge

C - Chemistry, Metallurgy

02

F

C02F 11/00 (2006.01) C02F 1/50 (2006.01)

Patent

CA 2265730

Disclosed is a process for disinfecting the sludge byproduct of an organic waste stream of pathogenic bacteria and helminth ova commonly found in organic sludges, which includes the step of intimately contacting sludge with an effective amount of an aqueous solution having a solute of at least one of a class of chemical compounds which liberate methyl-isothiocyanate gas upon commingling with organic sludge. Following disinfection the sludge may be subjected to supplemental process for extermination of enteric virus and/or conditioned for recycling as a nutritious plant medium.

L'invention concerne un procédé de déparasitage d'un sous-produit résiduaire provenant d'un courant résiduaire organique de bactéries pathogènes et d'oeufs d'helminthes se trouvant généralement dans des boues organiques. Ce procédé consiste à mettre la boue en contact étroit avec une quantité effective d'une solution aqueuse composée d'un soluté appartenant à au moins une classe de composés chimiques qui libèrent le gaz de méthylisocyanate se mélangeant à la boue organique. Après déparasitage, la boue peut être soumise à un traitement complémentaire visant à exterminer l'entérovirus et/ou peut être conditionnée pour être recyclée sous forme d'un milieu végétal nutritif.

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