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. 19, 2013
Filed:
May. 30, 2008
Applicants:
Estera Szwajcer Dey, Uardavägen, SE;
Olof Norrlöw, Kung Kristoffersgatan, SE;
Inventors:
Estera Szwajcer Dey, Uardavägen, SE;
Olof Norrlöw, Kung Kristoffersgatan, SE;
Assignee:
Kemira Oyj, Helsinki, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F 11/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a method for treatment of sludge in water purification, the method comprising the steps: providing an enzyme mixture comprising at least one enzyme capable of digesting natural polymeric materials; and adding the enzyme mixture and at least one chelating reagent, in optional order or simultaneously, to an aqueous sludge suspension.