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. 06, 2019
Filed:
Dec. 15, 2015
Applicant:
Bl Technologies, Inc., Minnetonka, MN (US);
Inventors:
Minggang Liu, Burlington, CA;
Jeffrey Ronald Cumin, Oakville, CA;
Glenn Vicevic, Oakville, CA;
Carsten Owerdieck, Oakville, CA;
Nelson Fonseca, Oakville, CA;
Assignee:
BL TECHNOLOGIES, INC., Minnetonka, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F 3/00 (2006.01); C02F 3/12 (2006.01); C02F 3/28 (2006.01); C02F 3/30 (2006.01); C02F 101/10 (2006.01);
U.S. Cl.
CPC ...
C02F 3/00 (2013.01); C02F 3/1263 (2013.01); C02F 3/2826 (2013.01); C02F 3/302 (2013.01); C02F 3/305 (2013.01); C02F 2101/106 (2013.01); Y02W 10/15 (2015.05);
Abstract
A system for treating wastewater containing selenium has a sequencing batch reactor upstream of a fixed film reactor. The sequencing batch reactor may be operated under anoxic conditions while influent is mixed with residual sludge. The SBR reduces total nitrogen, suspended solids, or both. Selenium is removed in the fixed film reactor by biological reduction to elemental selenium.