| 摘要 |
PROBLEM TO BE SOLVED: To provide a waste water treatment device and a method therefor which can perform a nitrite type nitrification stage and an anaerobic ammonium oxidation stage in a single treatment tank. SOLUTION: The waste water treatment device 20 is provided with a treatment tank 3, to which nitrogen-containing waste water containing ammonia is fed through a raw water line 2. The treatment tank 3 includes nitrification bacteria 4 and anaerobic ammonia oxidation bacteria 5, and the concentration of dissolved oxygen is controlled to 1.5 to 5.0 mg/L. COPYRIGHT: (C)2010,JPO&INPIT
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