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. 04, 2014
Filed:
Mar. 06, 2009
Applicants:
Wolfgang Ewert, Hamburg, DE;
Michael Sievers, Clausthal-Zellerfeld, DE;
Hinnerk Bormann, Vienenburg, DE;
Inventors:
Wolfgang Ewert, Hamburg, DE;
Michael Sievers, Clausthal-Zellerfeld, DE;
Hinnerk Bormann, Vienenburg, DE;
Assignee:
P.C.S. Pollution Control Services GmbH, Hamburg, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C02F 3/00 (2006.01); C02F 1/00 (2006.01); C02F 9/00 (2006.01); C02F 3/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a method for wastewater treatment utilizing an anaerobic treatment of primary sludge (PS) in a septic tank (), and a separate treatment of excess sludge (ÜS). The excess sludge (ÜS) is separated from the primary sludge (PS) before the anaerobic treatment, solubilized in a hydrolysis treatment and liquefied, and subjected to a separate anaerobic treatment independently of the primary sludge (PS).