| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a nitrate nitrogen treatment material which can perform a long-term stable treatment of wastewater containing high-concentration nitrate nitrogen. <P>SOLUTION: The nitrate nitrogen treatment material is used for denitrification of nitrate nitrogen in water by biological treatment using sulfur-oxidizing bacteria, and made by integrating an alkali (earth) metal carbonate powder and sulfur powder with a water-insoluble or slightly soluble organic binder. The alkali (earth) metal carbonate comprises magnesium carbonate of more than 70%. The treatment material is suitable for treatment of the wastewater containing high-concentration nitrate nitrogen. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
