| 摘要 |
PROBLEM TO BE SOLVED: To increase the reduction rate of nitrate nitrogen, and to improve the utilization ratio of reducing gas. SOLUTION: In the method for treating nitrate nitrogen-containing water, a water treatment catalyst for nitrate nitrogen-containing water composed of particulates with the average particle diameter in the range of 5 nm to 1μm in which metal particulates are carried on crystalline carbon particles, and the carrying amount of the metal particulates in the catalyst particulates lies in the range of 1 to 50 wt.% as metal is used. As the crystalline carbon particles, a crystalline carbon compound having a graphite crystal structure, and in which the distance between crystallites lies in the range of 1 to 30 nm such as carbon black, acetylene black, a carbon nanotube, a carbon nanohorn, a carbon fiber and graphite is used. COPYRIGHT: (C)2007,JPO&INPIT
|
