Treating sewage or like sludge

Details Treating sewage or like sludge Treating sewage or like sludge

C - Chemistry, Metallurgy

02

F

C02F 11/14 (2006.01) C02F 11/18 (2006.01)

Patent

CA 2275269

There is disclosed a process for treating sewage sludge or similar organic sludge in which dewatered sludge cake and an alkaline admixture are mixed and then dried under pasteurisation conditions utilising heat from the exothermic reaction with the alkali, in which drying is effected by extraction of moisture evaporated from the mixture by the exothermic heat.

L'invention concerne un procédé de traitement de boues d'épuration ou de boues organiques similaires, le procédé consistant à mélanger un gâteau de boues essoré et un mélange alcalin, puis à les sécher dans des conditions de pasteurisation, au moyen de la chaleur provenant de la réaction exothermique avec l'alcali; le séchage s'effectue par extraction de l'humidité s'évaporant du mélange sous l'effet de la chaleur exothermique.

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