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Title:
WASTEWATER TREATMENT APPARATUS
Document Type and Number:
Japanese Patent JP2010005612
Kind Code:
A
Abstract:

To provide a wastewater treatment apparatus which enables more efficient use of ozone in comparison with the conventional one when decomposing pollution-causing substances in sewage.

In the wastewater treatment apparatus, raw water containing the pollution-causing substances is introduced from a raw water tank 1 to a pressure pump 5, and ozone supplied from a gas supply device 3 is introduced to the pressure pump 5 to dissolve the ozone in the raw water under pressure, thereby generating primary treated water having a lower content of the pollution-causing substances than that of the raw water. The primary treated water whose pressure is increased at the pressure dissolution in the pressure pump 5 is jetted from a nozzle 9 into a reaction tank 11 to reduce the ozone dissolved in a liquid phase before being jetted into microbubbles in a liquid phase after being jetted, thereby generating secondary treated water having a lower content of the pollution-causing substances than that of the primary treated water.


Inventors:
Nomura, Keiichi
Ninomiya, Yoshihiko
Furuta, Akio
Application Number:
JP2009000113558
Publication Date:
January 14, 2010
Filing Date:
May 08, 2009
Export Citation:
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Assignee:
OKADA SANGYO KK
International Classes:
C02F1/78; B01F1/00; B01F3/04; B01F5/02; B01F5/10; B01F5/12
Domestic Patent References:
1990-08-22
2006-06-01