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. 08, 2008
Filed:
Mar. 22, 2006
Applicants:
Hiroyuki Umezawa, Gunma, JP;
Masahiro Iseki, Saitama, JP;
Motoyuki Tsuihiji, Gunma, JP;
Inventors:
Assignee:
Sanyo Electric Co., Ltd., Moriguchi-shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F 1/58 (2006.01); C02F 101/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
A wastewater treatment equipment of an embodiment of the present invention neutralizes a WTBTby introducing the WTBTcontaining fluorine components to a first treatment tankA and by introducing an NaOH solution from a second path Pand so on. The fluorine components contained in the WTBTis then fixed as calcium fluoride by adding calcium components to the WTBTstored in a second treatment tankB. Furthermore, MTBR like calcium fluoride are separated from the WTBT in a third treatment tankC. The separated MTBR are rinsed and dewatered in a filter press