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. 27, 2010
Filed:
May. 07, 2007
Masahiko Tsutsumi, Fuchu, JP;
Nobuyuki Ashikaga, Kawasaki, JP;
Yasuhiko Nagamori, Fuchu, JP;
Takumi Obara, Fuchu, JP;
Takashi Menju, Kawasaki, JP;
Katsuya Yamamoto, Yokohama, JP;
Masahiko Tsutsumi, Fuchu, JP;
Nobuyuki Ashikaga, Kawasaki, JP;
Yasuhiko Nagamori, Fuchu, JP;
Takumi Obara, Fuchu, JP;
Takashi Menju, Kawasaki, JP;
Katsuya Yamamoto, Yokohama, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
An aeration-less water treatment system includes an anaerobic treatment tank which subjects sewage supplied by a pump to anaerobic treatment by causing the sewage to upflow, and an aerobic treatment tank which subjects anaerobically treated water to aerobic treatment by letting the anaerobically treated water to downflow by natural downflow. The aerobic treatment tank includes an aerobic filter bed section in which carriers to which aerobic microorganisms are adhered are arranged. The aerobic filter bed section subjects the anaerobically treated water to decomposition treatment by putting the anaerobic treatment water in contact with the aerobic microorganisms adhered to surfaces of the carriers. The aerobic filter bed section is provided with an air port which takes in air into under normal pressure, thereby activating the aerobic microorganisms.