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, 2009
Filed:
Aug. 31, 2006
Betty-ann Curtis, Mukwonago, WI (US);
Marc Roehl, Mukwonago, WI (US);
Michael Doyle, Wauwatosa, WI (US);
Peter J. Petit, Pewaukee, WI (US);
Betty-Ann Curtis, Mukwonago, WI (US);
Marc Roehl, Mukwonago, WI (US);
Michael Doyle, Wauwatosa, WI (US);
Peter J. Petit, Pewaukee, WI (US);
Siemens Water Technologies Corp., Warrendale, PA (US);
Abstract
A method for removing inert solids from low-yield wastewater treatment processes. The method includes combining wastewater with bacteria-laden sludge in a mainstream reactor to form a mixed liquor, separating the mixed liquor into a clear effluent and activated sludge, returning a first portion of activated sludge to the mainstream reactor, treating a second portion of activated sludge in a sidestream bioreactor prior to returning the second portion of activated sludge to the mainstream reactor, and employing a screening device within the wastewater treatment process to remove inert solids.