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, 2002
Filed:
Mar. 13, 2000
Kei Baba, Tokyo, JP;
Toshiaki Tsubone, Tokyo, JP;
Tatsuo Takechi, Tokyo, JP;
Shinichi Endo, Tokyo, JP;
Yukihiko Okamoto, Tokyo, JP;
NKK Corporation, Tokyo, JP;
Abstract
A method for treating waste water and a plant designed for preventing the precipitation of carriers under the air blower installed for reaction tank or aeration tank, wherein the plant comprises an aeration tank containing the carriers for growing microorganism for biological treatment of waste water or the subunit joined with the aeration tank through a partition wall including the screen capable of separating the carriers , air blower provided for the aeration tank or the subunit of the aeration tank, air bubble generator or submerged stirrer provided under the air blower for creating the flow of water so that the carriers under the blower can be liquidized by the flow of water created by the air bubble generator or the submerged stirrer to prevent the precipitation of the carriers under the air blower , whereby not only the precipitation of the carriers under the air blower can be prevented but also the water treatment efficiency and capacity meeting the designed numerical requirements can be maintained and exerted by the aeration tank.