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.

Date of Patent:
Nov. 30, 2004

Filed:

Nov. 05, 2002
Applicant:
Inventors:

Kazuyuki Yamasaki, Hiroshima, JP;

Kazumi Chujo, Kagawa-ken, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F 3/06 ; C02F 3/12 ;
U.S. Cl.
CPC ...
C02F 3/06 ; C02F 3/12 ;
Abstract

According to this wastewater treatment apparatus, wastewater can be treated by novel action by a foaming tank in comparison with a treatment method solely using a biological treatment tank constituting an aeration tank. That is, wastewater can be treated by action achieved by combining (1) action solely of a biological treatment tank and (2) action of a foaming tank . Specific action in this foaming tank includes supply of dissolved oxygen to wastewater and oxidation by bubbled air (micro air) under a favorable condition with a shallow water depth. According to this wastewater treatment apparatus, energy to be consumed can be saved and toxic chemical substances such as dimethylformamide as a toxic chemical substance can be completely decomposed by unlimited microorganisms.


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