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:
Jul. 02, 2019
Filed:
Oct. 06, 2014
Applicant:
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Inventor:
Masaru Chiyomaru, Tokyo, JP;
Assignee:
MITSUBISHI HEAVY INDUSTRIES ENGINEERING, LTD., Kanagawa, JP;
Primary Examiner:
Int. Cl.
CPC ...
C02F 1/52 (2006.01); B01J 20/02 (2006.01); C02F 1/28 (2006.01); C02F 9/00 (2006.01); C02F 1/70 (2006.01); C02F 1/72 (2006.01); C02F 101/10 (2006.01); C02F 103/18 (2006.01); C02F 1/74 (2006.01); C02F 1/00 (2006.01); C02F 103/10 (2006.01); C02F 103/12 (2006.01); C02F 103/16 (2006.01);
U.S. Cl.
CPC ...
C02F 1/5236 (2013.01); B01J 20/0233 (2013.01); B01J 20/0288 (2013.01); C02F 1/281 (2013.01); C02F 1/5281 (2013.01); C02F 9/00 (2013.01); C02F 1/5245 (2013.01); C02F 1/70 (2013.01); C02F 1/722 (2013.01); C02F 1/74 (2013.01); C02F 2001/007 (2013.01); C02F 2101/106 (2013.01); C02F 2103/10 (2013.01); C02F 2103/12 (2013.01); C02F 2103/16 (2013.01); C02F 2103/18 (2013.01); C02F 2209/02 (2013.01); C02F 2209/06 (2013.01); C02F 2209/42 (2013.01);
Abstract
A wastewater treatment method and a wastewater treatment apparatus securely and readily remove selenium, which is considered harmful, by removing not only 0-valent selenium, 4-valent selenium, and 6-valent selenium, but also -2-valent selenium. In the wastewater treatment method and the wastewater treatment apparatus for treating wastewater including selenium, -2-valent selenium included in the wastewater is oxidated by using an oxidant, or -2-valent selenium included in the water is removed by using a remover.