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:
Dec. 01, 2015
Filed:
Mar. 17, 2014
Robert S. Reimers, Houston, TX (US);
Andrew J. Englande, Jr., Madisonville, LA (US);
Norman K. Murray, Covington, LA (US);
Yue Xu, New Orleans, LA (US);
Robert S. Reimers, Houston, TX (US);
Andrew J. Englande, Jr., Madisonville, LA (US);
Norman K. Murray, Covington, LA (US);
Yue Xu, New Orleans, LA (US);
The Administrators of the Tulane Educational Fund, New Orleans, LA (US);
Abstract
In order to render sewage sludge suitable for beneficial purposes, it must be disinfected and stabilized. EDC deactivation is rapidly becoming a desirable result of any sludge or biosolids treatment process. Disclosed herein is a process of treating sewage sludge so as to stabilize the sludge that involves the presence of an iron-containing compound during dewatering of the sludge. Process embodiments described also achieve biosolid samples that have reduced EDC activity, Other embodiments disclosed involve use of a combination of iron salts ferrate and ferric chloride that are added to wastewater sludge in the dewatering step before heat drying. The biosolids resulting from sludge treated with aniron-containing compound are able to resist putrefaction for more than two to three weeks.