| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a method and device of removing nitrogen which improve a nitrogen removal rate compared with the conventional circulation-type nitrification and denitrification method.SOLUTION: In the circulation-type nitrification and denitrification method, hydrogen donator is added to a denitrification tank, and in addition to denitrification reaction, microorganism assimilation reaction is preferentially used.</p> |
