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:
Mar. 15, 1983
Filed:
Mar. 02, 1981
Tadao Fujimoto, Kobe, JP;
Tadaaki Kawasugi, Nara, JP;
Taketoshi Madokoro, Kyoto, JP;
Akio Toriyama, Sakai, JP;
Kubota Ltd., Osaka, JP;
Abstract
A waste water treating apparatus comprises an inner chamber and an outer chamber disposed around the inner chamber extending to a considerable depth. The inner and outer chamber communicate with each other at the bottom portion, whereby the inner and outer chambers form a downward and upward flow chamber, respectively, for circulating waste water. The waste water that flows from the downward flow chamber to the upward flow chamber is circulated to the downward flow chamber by means of a pump. An oxygen containing gas is simultaneously supplied into the ciculating waste water. An apparatus for monitoring the concentration of oxygen or carbon dioxide in an exhaust gas is provided at an outlet of the upward flow chamber. The oxygen containing gas being supplied is controlled to a predetermined optimum flow rate in response to the monitored concentration.