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:
Jun. 04, 2013
Filed:
Mar. 08, 2011
Phillippe Sauvignet, Saint-Etienne-en-Cogles, FR;
Kashi Banerjee, Moon Township, PA (US);
Charles D. Blumenschein, Pittsburgh, PA (US);
Phillippe Sauvignet, Saint-Etienne-en-Cogles, FR;
Kashi Banerjee, Moon Township, PA (US);
Charles D. Blumenschein, Pittsburgh, PA (US);
Veolia Water Solutions & Technologies Support, Saint Maurice, FR;
Abstract
A method for treating wastewater comprises biologically treating the wastewater in a fixed-biomass biological reactor and then treating the wastewater in a ballasted flocculation system. The ballasted flocculation system produces a clarified effluent and sludge containing inert granular material having biomass accumulated thereon and suspended solids. The inert granular material having biomass accumulated thereon is separated from the suspended solids and then cleaned with a cleaning solution. After separating the biomass from the cleaned inert granular material, the cleaned inert granular material is recycled for use in the ballasted flocculation system.