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:
Mar. 10, 2020
Filed:
Mar. 29, 2019
Applicant:
Richard E. Speece, Nashville, TN (US);
Inventor:
Richard E. Speece, Nashville, TN (US);
Assignee:
Other;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C02F 3/12 (2006.01); C02F 3/26 (2006.01); B01F 3/04 (2006.01);
U.S. Cl.
CPC ...
C02F 3/1278 (2013.01); B01F 3/04099 (2013.01); C02F 3/121 (2013.01); C02F 3/26 (2013.01); C02F 2209/225 (2013.01);
Abstract
An apparatus and method for oxygenating a flow of mixed liquor, typically from an aeration tank, to a secondary clarifier permits further biological reduction of biochemical oxygen demand (BOD) of a waste stream, such as waste water while resident in the secondary clarifier. In some embodiments, the mixed liquor may be oxygenated to levels at or above about 4 mg/L. Depending upon the user requirements and the BOD of the waste stream, all or a portion of the mixed liquor may be treated to raise the dissolved oxygen content. Various apparatus may be used for superoxygenation, including, as one example, a superoxygenation cone, such as a Speece cone.