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:
Nov. 02, 1999
Filed:
Nov. 08, 1996
Yasuyuki Ogushi, Hiroshima-ken, JP;
Masato Kaneko, Hiroshima-ken, JP;
Naohiko Ukawa, Hiroshima-ken, JP;
Susumu Okino, Hiroshima-ken, JP;
Masao Hino, Hiroshima-ken, JP;
Takashi Haruki, Hiroshima-ken, JP;
Taku Shimizu, Tokyo, JP;
Kiyoshi Okazoe, Tokyo, JP;
Masaharu Yoshimi, Kanagawa-ken, JP;
Mitsubishi Jukogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A process for the treatment of sewage to provide effective removal of selenium (especially the 6-valent selenium) to meet required standards for the dissolved amount of selenium, and the like, at a low cost are developed. The process and apparatus reduces selenium from the 6-valent selenium using microbiological treatment to obtain 4-valent selenium and/or simple selenium, and then provide a solid-liquid separation.