Method of dewatering difficult sludges

Details Method of dewatering difficult sludges Method of dewatering difficult sludges

C - Chemistry, Metallurgy

02

F

C02F 11/14 (2006.01)

Patent

CA 2341895

The present invention provides a new method for dewatering difficult sludges, such as autothermal thermophilic aerobic digestion sludges. The method incorporates a three-component treatment system. Initially, the difficult sludge is dosed with an inorganic coagulant and then the resulting sludge - inorganic mixture is dosed with a microparticle component. Lastly, the resulting mixture is dosed with a high molecular weight flocculant.

La présente invention porte sur un nouveau procédé de déshydratation des boues complexes telles que les boues de digestion aérobie, thermophile,utothermique. Ce procédé comprend un système de traitement à trois composants. A l'origine, la boue complexe est dosée avec un coagulant inorganique, et la boue obtenue le mélange inorganique est alors dosée avec un composant à microparticules. Enfin, le mélange obtenu est dosé avec un floculant de poids moléculaire élevé.

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