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:
Nov. 03, 2026
Filed:
Jan. 31, 2023
Metawater Co., Ltd., Tokyo, JP;
Takashi Nakamura, Tokyo, JP;
Shotaro Hatsuyama, Tokyo, JP;
Shigehiro Suzuki, Tokyo, JP;
Hiroyuki Takahashi, Tokyo, JP;
Daisuke Naka, Tokyo, JP;
METAWATER Co., Ltd., Tokyo, JP;
Abstract
There is provided a wastewater treatment apparatus that: controls the air diffusion amount in a flow channel where wastewater is treated; forms a first-half aerobic region, a first-half combined-use region where both nitrification and denitrification progress, a denitrification region, a second-half combined-use region where both nitrification and denitrification progress, and a second-half aerobic region in the stated order from the upstream side; and produces first and second swirl flows constituting a pair. The wastewater treatment device also controls the air diffusion amount in the first-half aerobic region and the first-half combined-use region on the basis of a concentration of nitrate nitrogen and controls the air diffusion amount in the second-half combined-use region and the second-half aerobic region on the basis of the concentration of ammonia nitrogen.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile