The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 20, 2021
Filed:
May. 15, 2017
Veolia Water Solutions & Technologies Support, Saint-Maurice, FR;
Cédric Crampon, Champigney-sur-Marne, FR;
Malik Djafer, Boulogne-Billancourt, FR;
Éric Guibelin, Saponay, FR;
Veolia Water Solutions & Technologies Support, Saint Maurice, FR;
Abstract
Sludge dewatering process assisted by flocculating reactant, said process comprising an injection of flocculating reactant into the sludge and a step of dewatering said sludge, characterized in that it comprises a preliminary step that consists in mixing said sludge in a mixer () comprising a cylindrical chamber () equipped with blades () rotatably mounted on a shaft () rotating at a speed of rotation of between 500 rpm and 4000 rpm, so as to destructure the sludge and reduce the viscosity thereof, and in discharging the sludge from said mixer () via a network () to said dewatering step, and in that it comprises a step of depressurizing said mixer () and said network giving rise to the lysis, by cavitation, of said sludge, said depressurizing step being carried out over a period of at least 0.1 second. Corresponding plant.