| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a nitrate nitrogen treatment material excellent in a denitrification capacity which exhibits the denitrification capacity without installing a process for culturing and carrying denitrifying bacteria including autotrophic sulfur oxidizing denitrifying bacteria, and can cope with a temporary change in environment, such as water quality and flow rate. <P>SOLUTION: In the nitrate nitrogen treatment material used for denitrifying nitrate nitrogen in water by biological treatment using the denitrifying bacteria and made by integrating carbonate powder and sulfur powder with a binder, the denitrifying bacteria is made to exist therein beforehand. It is favorable to use sludge generated from sulfur denitrification treatment using the nitrate nitrogen treatment material as a denitrifying bacteria-containing material. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
