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. 14, 2006
Filed:
Sep. 04, 2002
Naoki Kitayama, Moriguchi, JP;
Masaki Moriizumi, Moriguchi, JP;
Jun Hirose, Moriguchi, JP;
Sanyo Electric Co., Ltd., Moriguchi, JP;
Abstract
The object of the present invention is to provide a water treatment device in which temperature does not affect performance in nitrogen removal. Water circulates in a first anaerobic filter bed chamber, a second anaerobic filter bed chamber, a contact aeration chamber, a sedimentation chamber, and an electrolytic chamberfor phosphorus removal. The supernatant in sedimentation chamberflows into a disinfection chamberand is then sent to an electrolytic chamberfor nitrogen removal. An electrode pair is provided inside electrolytic chamber. Halogen ions present in the water are oxidized on the anode side. After halogen gas is generated, this gas reacts with water and generates hypohalous acid. On the cathode side, the nitrogen components in the water are converted to nitrate ions, and these nitrate ions are further converted to ammonium ions. The hypohalous acid and ammonium ions react, and the nitrogen components are converted to nitrogen gas by way of chloramine.