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:
Nov. 14, 2017
Filed:
Nov. 21, 2013
Applicant:
Cyklar-stulz Gmbh, Gommiswald, CH;
Inventor:
Geert Nyhuis, Gommiswald, CH;
Assignee:
CYKLAR-STULZ GMBH, Gommiswald, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C02F 3/30 (2006.01); C02F 3/12 (2006.01); C02F 1/38 (2006.01);
U.S. Cl.
CPC ...
C02F 3/307 (2013.01); C02F 3/1221 (2013.01); C02F 1/385 (2013.01); Y02W 10/15 (2015.05);
Abstract
A method and installation for treating wastewater containing ammonia includes feeding activated sludge from an aeration tank into a hydrocyclone. The sludge is separated into a specifically heavy fraction containing mostly anaerobic ammonia-oxidizing bacteria (anammox) and a specifically light fraction containing mostly aerobic oxidizing bacteria (AOB), which are returned to the aeration tank. The hydrocyclone includes a roughened inner wall surface for at least partially removing an organic or inorganic cover layer disposed on the anaerobic ammonium-oxidizing bacteria (anammox).