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. 02, 2010
Filed:
Aug. 01, 2007
Peter G. Stroot, Lutz, FL (US);
Lina Posso-blandon, Orlando, FL (US);
Raymond A. Morris, Lakeland, FL (US);
Peter G. Stroot, Lutz, FL (US);
Lina Posso-Blandon, Orlando, FL (US);
Raymond A. Morris, Lakeland, FL (US);
University of South Florida, Tampa, FL (US);
Abstract
A method of stimulating nitrification at low SRT by elevating pCOduring aeration is disclosed. The improvement on solids settling performance when elevated pCOwas supplied after 2 hours within the React cycle is consistent with the previous results that identified inorganic carbon as a potential remedy to poor settling and bulking sludge problems in activated sludge systems. Elevated pCOincreases the concentration of carbon dioxide and lowers the pH, which improve nitrification. The specific growth rate of nitrifying bacteria is sensitive to pCO, pH, and dissolved oxygen (DO). The DO is a function of the aeration rate. Elevating the pCOand lowering the aeration rate provides conditions for nitrification rates that are comparable to conventional systems. However, the lower aeration rate yields significant energy cost savings.