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:
Apr. 05, 2016
Filed:
Sep. 09, 2014
Metawater Co., Ltd., Tokyo, JP;
Tokyo Metropolitan Sewerage Service Corporation, Tokyo, JP;
Yuji Furuya, Tokyo, JP;
Shigehiro Suzuki, Tokyo, JP;
Nobuki Tsuboi, Tokyo, JP;
Hiroyuki Takahashi, Tokyo, JP;
Noriaki Inagaki, Tokyo, JP;
Tsutomu Wada, Tokyo, JP;
Makoto Maeda, Tokyo, JP;
Kouji Kassai, Tokyo, JP;
Keiichi Sone, Tokyo, JP;
METAWATER CO., LTD., Tokyo, JP;
TOKYO METROPOLITAN SEWERAGE SERVICE CORPORATION, Tokyo, JP;
Abstract
A wastewater treatment apparatus includes an air diffusing unit, a denitrification confirming unit, a nitrification confirming unit, a gas supply-amount control unit. The air diffusing unit supplies gas to nitrogen-containing water. The denitrification confirming unit provided at a first predetermined position confirms a denitrification state whether a desired proportion of the nitrate has been denitrified. The nitrification confirming unit provided at a second predetermined position confirms a nitrification state whether a desired proportion of the ammonia has been nitrified. The gas supply-amount control unit controls a gas supply amount at least on an upstream side of the denitrification confirming unit, so that the desired proportion of the nitrate is denitrified at the first predetermined position, and controls the gas supply amount at least on an upstream side of the nitrification confirming unit, so that the desired proportion of the ammonia is nitrified at the second predetermined position.