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:
Feb. 07, 2017
Filed:
Mar. 14, 2013
Applicant:
Anaergia Inc., Burlington, CA;
Inventors:
Michael David Theodoulou, Milton, CA;
Juan Carlos Josse, Mission Viejo, CA (US);
Assignee:
Anaergia Inc., Burlington, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F 11/12 (2006.01); B01D 29/64 (2006.01); B01D 29/35 (2006.01); B30B 9/12 (2006.01);
U.S. Cl.
CPC ...
C02F 11/121 (2013.01); B01D 29/35 (2013.01); B01D 29/6476 (2013.01); B30B 9/12 (2013.01); C02F 11/125 (2013.01); C02F 11/126 (2013.01);
Abstract
A screw press has a cylindrical screening section mounted to a frame. The screening section is able to rotate but can be prevented from rotating. A sprayer system is operable to spray water on the screening section. In a cleaning process, the screening section is rotated while water is sprayed against it. Optionally, the power required to rotate the screen may be provided by an auger drive mechanism. The screening section may have openings sized to retain flocculated solids. The screw press may be used to thicken a sludge from a waste water treatment plant.