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. 24, 2024
Filed:
Jun. 10, 2020
Applicant:
Kemira Oyj, Helsinki, FI;
Inventors:
Göran Bäckman, Helsingborg, SE;
Sakari Halttunen, Espoo, FI;
Pascal Morin, Québec, CA;
Marina Shestakova, Espoo, FI;
Assignee:
Kemira Oyj, Helsinki, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F 3/12 (2023.01); C02F 101/10 (2006.01); C02F 101/30 (2006.01); C02F 103/28 (2006.01);
U.S. Cl.
CPC ...
C02F 3/1215 (2013.01); C02F 2101/105 (2013.01); C02F 2101/30 (2013.01); C02F 2103/28 (2013.01); C02F 2209/06 (2013.01); C02F 2209/08 (2013.01);
Abstract
A method for removing biologically recalcitrant soluble organic compounds from wastewater simultaneously in an activated sludge process comprising an aeration tank and a solid-liquid separation unit, in which method at least one Al and/or Fe based inorganic metal coagulant is added to the wastewater in the activated sludge process and/or prior to conveying wastewater to an activated sludge process.