| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a waste water treatment method and an apparatus which efficiently treat ammonia-containing waste water containing solid matter and organic matter such as digestive slurry generated in a biogas plant. Ž<P>SOLUTION: The waste water treatment method includes: an ammonia gas dispersing step (11) where the pH of ammonia-containing waste water containing solid matter and organic matter is controlled to the range of 7 to 12, and ammonia gas is dispersed into air; an ammonia dissolution step (21) where the ammonia gas dispersed into air in the ammonia dispersing step is absorbed into absorption water; and a nitrogen bio-removal step (31) where the ammonia in the aqueous ammonia absorbed with the ammonia gas is subjected to nitrification and anaerobic ammonia oxidation, consequently the ammonia in the aqueous ammonia is decomposed and removed, and further, the treatment water in the nitrogen bio-removal step is used as absorption water for absorbing ammonia gas in the ammonia dissolution step. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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