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:
Jul. 01, 2014
Filed:
Aug. 12, 2011
Justin Schreiber, Raleigh, NC (US);
Charles H. Guthrie, Raleigh, NC (US);
Justin Schreiber, Raleigh, NC (US);
Charles H. Guthrie, Raleigh, NC (US);
Veolia Water Solutions & Technologies Support, Saint Maurice, FR;
Abstract
A biological wastewater treatment system includes a tank or reactor for holding and treating wastewater. Disposed in the tank or reservoir is an array of biofilm carriers for supporting biomass that remove pollutants and contaminates from the wastewater. A screen structure is mounted to the tank for screening treated wastewater flowing from the tank and preventing the biofilm carriers from being discharged from the tank. The screen structure includes a vertical screen made up of a plurality of screen modules disposed in side-by-side relationship and disposed upstream of an outlet formed in the tank. Further this screen structure may include a plurality of auxiliary screens that project form the vertical screen inwardly towards the interior area of the tank thereby providing increased screening area through which wastewater is discharged during a wastewater treatment process. The auxiliary screens include a screen area that extends around an open area and wherein wastewater passes through the screen area of the auxiliary screens into the interior area and from the interior area the wastewater passes through the plane of the vertical screen.