BIOLOGICAL TREATMENT OF WASTE WATER CONTAINING AMMONIA NITROGEN

Title:

BIOLOGICAL TREATMENT OF WASTE WATER CONTAINING AMMONIA NITROGEN

Document Type and Number:

Japanese Patent JP3222014

Kind Code:

B2

Abstract:

PURPOSE: To efficiently remove NH4-N or T-N(total nitrogen) in waste water containing NH4-N in high concn. and also containing org. matter obstructing nitration reaction.
CONSTITUTION: A first reactor 1 is packed with activated carbon 3 and the succeeding reactor 21 is packed with a substance 23 having ion exchange capacity and, after the activated carbon 3 and the substance 23 are seeded with a bacteria mixed soln., waste water containing an org. substance and ammonia nitrogen is circulated to the reactors 1, 21 and, in the succeeding reactor 21, waste water is subjected to nitration treatment under an aerobic condition while the nitration soln. is circulated to the first reactor 1 and, in the first reactor 1, waste water is subjected to denitrification treatment under an oxygen free anaerobic condition while an org. substance is adsorbed and removed by activated carbon 3.

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Inventors:

Isao Somiya
Hiroshi Tsuno
Hideki Iwabe
Wakita Ushio

Application Number:

JP21458894A

Publication Date:

October 22, 2001

Filing Date:

September 08, 1994

Export Citation:

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Assignee:

Kubota Corporation

International Classes:

C02F3/08; B01J47/10; C01B31/08; C02F1/28; C02F1/42; C02F3/30; C02F3/34; (IPC1-7): C02F3/34; B01J47/10; C01B31/08; C02F1/28; C02F1/42; C02F3/08; C02F3/30

Domestic Patent References:

JP5132058A
JP6182392A

Attorney, Agent or Firm:

Yoshihiro Morimoto

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