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:
Aug. 06, 2019
Filed:
Mar. 02, 2016
Applicant:
Veolia Water Solutions and Technologies Support, Saint-Maurice, FR;
Inventors:
Richard W. DiMassimo, Raleigh, NC (US);
Soren J. Hojsgaard, Hillerod, DK;
Assignee:
Veolia Water Solutions & Technologies Support, Saint-Maurice, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F 11/04 (2006.01); C02F 11/18 (2006.01); C02F 1/02 (2006.01);
U.S. Cl.
CPC ...
C02F 11/04 (2013.01); C02F 11/18 (2013.01); C02F 11/185 (2013.01); C02F 1/025 (2013.01); C02F 2301/043 (2013.01); C02F 2301/046 (2013.01); C02F 2301/066 (2013.01); C02F 2303/06 (2013.01);
Abstract
A method of treating primary sludge and activated sludge produced by a wastewater system is disclosed. A portion of the activated sludge is wasted to form biological sludge. The biological sludge is thermally hydrolyzed. The method entails cooling the thermally hydrolyzed biological sludge by mixing primary sludge with the thermally hydrolyzed biological sludge. Thereafter, the combined sludge is directed through a pasteurization process and then to an anaerobic digester which performs anaerobic digestion of the combined sludge.