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Title:
METHOD OF RECOVERING NITROGEN FROM SEWAGE
Document Type and Number:
Japanese Patent JP2004008913
Kind Code:
A
Abstract:

To provide a method of recovering nitrogen from sewage by which the lowering of the diffusion of ammonia nitrogen is prevented and the deposition of scale is prevented while reducing the cost such as fuel cost, power cost or chemical cost.

The method of recovering nitrogen is performed by aerating the sewage containing ammonia nitrogen to diffuse ammonia nitrogen in the sewage. Before the aeration, at least one of a surfactant or waste edible oil is added into the sewage.


Inventors:
HOTTA HIDEKAZU
NOJIMA ISAMU
Application Number:
JP2002165313A
Publication Date:
January 15, 2004
Filing Date:
June 06, 2002
Export Citation:
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Assignee:
HITACHI SHIPBUILDING ENG CO
International Classes:
B01D53/58; B01D19/00; B01D19/04; C01C1/10; C02F1/20; C05C1/00; C05C3/00; (IPC1-7): C02F1/20; B01D19/00; B01D19/04; B01D53/58; C01C1/10; C05C1/00; C05C3/00
Attorney, Agent or Firm:
Chiharu Shimizu
Yukio Ogata



 
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