APPARATUS AND METHOD FOR TREATING WASTE WATER CONTAINING NITROGEN COMPOUND AND INORGANIC ION

摘要

PPROBLEM TO BE SOLVED: To solve a problem of scale eduction due to insolubilization of an inorganic ion in a nitration tank when a nitrogen compound in waste water containing the nitrogen compound and the inorganic ion are treated by carrying out nitrite type nitration. PSOLUTION: An apparatus for treating the waste water containing the nitrogen compound and the inorganic ion includes a nitration tank 1 for aerating the waste water containing the nitrogen compound and the inorganic ion to oxidize the nitrogen compound into a nitrite nitrogen, scale prevention means 2 and 3 for preventing the inorganic ion from forming scale and a pH adjustment agent adding means 2 for keeping a pH in the nitration tank 1 neutral or alkaline. PCOPYRIGHT: (C)2006,JPO&NCIPI