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. 04, 2020
Filed:
May. 16, 2017
Applicant:
Anaergia Inc., Burlington, CA;
Inventors:
Matthew John Kuzma, Encinitas, CA (US);
Juan Carlos Josse, Aliso Viejo, CA (US);
Assignee:
ANAERGIA INC., Burlington, CA;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C02F 11/04 (2006.01); C02F 11/12 (2019.01); C02F 11/14 (2019.01);
U.S. Cl.
CPC ...
C02F 11/04 (2013.01); C02F 11/12 (2013.01); C02F 11/14 (2013.01); C02F 2203/006 (2013.01); C02F 2301/08 (2013.01); C02F 2301/106 (2013.01);
Abstract
Sewage sludge is treated to produce Class A (generally pathogen free) biosolids. Some or all of the sewage sludge is thickened or dewatered to 10 wt % dried solids and then fed to a thermophilic anaerobic digester. The thermophilic digester has multiple stages provided by way of a tank with at least one internal wall. Effluent from the thermophilic digester is treated further in a mesophilic anaerobic digester.