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:
Feb. 16, 2021
Filed:
Jun. 28, 2013
Mitsubishi Hitachi Power Systems Environmental Solutions, Ltd., Kanagawa, JP;
Susumu Okino, Tokyo, JP;
Kazuhide Kamimura, Hyogo, JP;
Tetsuya Ito, Hyogo, JP;
Morikata Nishida, Hyogo, JP;
Hiroyuki Nakamura, Hyogo, JP;
MITSUBISHI POWER ENVIRONMENTAL SOLUTIONS, LTD., Kanagawa, JP;
Abstract
A method for removing selenium according to the present invention comprises: a valence change step of adding an oxidant to a wastewater from a facility that gasifies a fuel containing selenium in a reducing atmosphere, and oxidizing the selenium to change the valence of the selenium, and a solid-liquid separation step of adding a flocculant to the wastewater, forming a floc containing the selenium for which the valence has been changed in the valence change step, and subjecting the floc to solid-liquid separation.