Treatment of sewage sludge

Details Treatment of sewage sludge Treatment of sewage sludge

C - Chemistry, Metallurgy

02

F

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

Patent

CA 2529956

The present invention provides a method of reducing the pathogen content of sewage sludge comprising (a) adding to the sludge an effective amount of a phosphorous-containing compound and (b) keeping the phosphorous-containing compound in contact with the sludge for a sufficient time to reduce the amount of pathogens present in the sludge by an amount equivalent to a logarithmic reduction of 2 or more.

L'invention concerne un procédé permettant de réduire la teneur en agents pathogènes de boues d'épuration. Ce procédé consiste : a) à ajouter aux boues une quantité efficace d'un composé contenant du phosphore ; et b) à maintenir ledit composé contenant du phosphore en contact avec les boues pendant une période suffisante pour réduire la quantité d'agents pathogènes présents des les boues d'épuration selon une quantité équivalente à une réduction logarithmique de 2 ou supérieure.

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