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. 09, 2022
Filed:
Feb. 08, 2017
Applicant:
Ecolab Usa Inc., St. Paul, MN (US);
Inventors:
David B. Mitchell, Yardley, PA (US);
Petia Todorova Tontcheva, Schaumburg, IL (US);
Assignee:
ECOLAB USA INC., St. Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F 11/12 (2019.01); C02F 11/121 (2019.01); C02F 1/24 (2006.01); C02F 1/52 (2006.01); C02F 11/14 (2019.01);
U.S. Cl.
CPC ...
C02F 11/121 (2013.01); C02F 1/24 (2013.01); C02F 1/52 (2013.01); C02F 11/14 (2013.01);
Abstract
A method for treating wastewater or sludge includes treating a sludge having a first viscosity of from about 3,000 cP to about 15,000 cP by shearing the sludge to obtain a treated sludge having a second viscosity of less than 3,000 cP, where the second viscosity persists for a period of time. The sludge may be thickened by dewatering. A chemical agent may be added to the thickened sludge during, before, or after shearing. The treated sludge may further be pumped, transported, or otherwise handled.