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:
Dec. 10, 2013
Filed:
Apr. 27, 2009
Dae Hwan Rhu, Goyang-si, KR;
Yeong Ki Yeo, Gunpo-si, KR;
SE Wook Seo, Seoul, KR;
Yong June Yune, Seoul, KR;
Bong Choel Choi, Seongnam-si, KR;
Byung Suk Lee, Suwon-si, KR;
Hwa Sun Lee, Seoul, KR;
Dae Hwan Rhu, Goyang-si, KR;
Yeong Ki Yeo, Gunpo-si, KR;
Se Wook Seo, Seoul, KR;
Yong June Yune, Seoul, KR;
Bong Choel Choi, Seongnam-si, KR;
Byung Suk Lee, Suwon-si, KR;
Hwa Sun Lee, Seoul, KR;
Bookang Tech Co., Ltd., , KR;
Abstract
A wastewater treatment apparatus of the present invention is configured to biologically filter wastewater through multimedia by consecutively performing two stages (the first and second stages) for a multimedia biological filtration process. A carbon source and coagulant are respectively injected during the first and second multimedia biological filtration processes. The first stage multimedia biological filtration process is carried out in anoxic conditions and the second stage multimedia biological filtration process is carried out in aerobic conditions. The media for the first and second stage biological filtration processes are arranged in large-middle-middle large-small size. Thus, the present invention can secure excellent treated water while minimizing loss of water-head by maximizing reflux capability of solids.