| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an apparatus for wastewater treatment which can increase a nitrification speed in an aerobic tank, obtain an enough denitrification effect in an anaerobic tank, etc., and remove nitrogen efficiently. SOLUTION: Diffusers 14, 16 are installed in the middle and lower parts of the aerobic tank 11 respectively in the wastewater treatment apparatus of a nitrification liquid circulation type.</p> |
