C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
C02F 11/14 (2006.01)
Patent
CA 2560189
The invention relates to a method for the treatment of sewage sludge, i.e. sludge originating from wastewater treatment plants, comprising a step involving solid/liquid separation by means of filtration. The invention is characterised in that the method comprises a step prior to the filtration step, involving the addition of two types of solid loads, each load type comprising particles having a homogenous average particle size which is different from that of the particles forming the other load type, in order to form an incompressible filter matrix with a high drainage function during the filtration step.
L'invention concerne un procédé de traitement de boues d'épuration, c'est-à- dire provenant d'installations d'épuration des eaux usées comportant une étape de séparation solide/liquide par filtration remarquable en ce que ledit procédé comporte préalablement à l'étape de filtration une étape d'addition de deux types de charges solides, chaque type de charge étant constitué de particules ayant une granulométrie moyenne homogène, distincte de celle des particules constituant l'autre type de charge, afin de former une matrice incompressible de filtration à fort pouvoir drainant lors de l'étape de filtration.
Antonini Gerard
Bensakhria Ammar
Chekroun Alain
Chekroun Alain
Goudreau Gage Dubuc
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