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. 08, 2011
Filed:
Mar. 18, 2009
Hidetake Shiire, Tokyo, JP;
Nobuyuki Ashikaga, Kanagawa-ken, JP;
Satoshi Haraguchi, Tokyo, JP;
Tokusuke Hayami, Tokyo, JP;
Tatsuoki Kono, Tokyo, JP;
Akiko Suzuki, Tokyo, JP;
Shinetsu Fujieda, Kanagawa-ken, JP;
Katsuya Yamamoto, Kanagawa-ken, JP;
Hidetake Shiire, Tokyo, JP;
Nobuyuki Ashikaga, Kanagawa-ken, JP;
Satoshi Haraguchi, Tokyo, JP;
Tokusuke Hayami, Tokyo, JP;
Tatsuoki Kono, Tokyo, JP;
Akiko Suzuki, Tokyo, JP;
Shinetsu Fujieda, Kanagawa-ken, JP;
Katsuya Yamamoto, Kanagawa-ken, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A phosphorus recovery method and a phosphorus recovery system which can make equipment size small, and can be added easily also to an existing wastewater treatment facility, and can recover phosphorus by low cost, are provided. A phosphorus compound adsorption material includes a nitrogen containing compound which has an amino group at an end of molecular structure, a carrier supporting the nitrogen containing compound, and zinc ion or iron ion fixed to the nitrogen containing compound. After passing water to be treated containing phosphorus to an adsorption tower filled up with this phosphorus compound adsorption material to make phosphorus stick to the phosphorus compound adsorption material, a drug solution for desorption is supplied to the adsorption tower, and phosphorus is desorbed in liquid and is recovered.