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:
Oct. 07, 2003
Filed:
Apr. 05, 2001
Applicant:
Inventors:
Kazuyuki Yamasaki, Hiroshima, JP;
Norio Sawai, Kitakatsuragi-gun, JP;
Kazumi Chujou, Ayauta-gun, JP;
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F 3/00 ; B01D 3/500 ; B01D 2/400 ;
U.S. Cl.
CPC ...
C02F 3/00 ; B01D 3/500 ; B01D 2/400 ;
Abstract
A wastewater treatment equipment is provided with a reaction tank and a separate reaction unit installed in the reaction tank. In the separate reaction unit, a reaction different from a reaction in the reaction tank is carried out with returned sludge and a acid or alkali. Reactants are generated from the returned sludge in the separate reaction unit and then introduced from a bottom portion of the separate reaction unit into the reaction tank so as to be used for wastewater treatment.