DENITRIFICATION METHOD AND DEVICE OF AMMONIA-CONTAINING WASTE WATER

摘要

PROBLEM TO BE SOLVED: To progress pre-stage nitritation stably, and to reduce a pH adjustment chemical amount, when executing a denitrification treatment of ammonia-containing waste water using an anaerobic ammonia oxidation method.;SOLUTION: A denitrification method of ammonia-containing waste water includes a nitritation step for subjecting a part or the whole of ammoniacal nitrogen in high-concentration ammonia-containing waste water to nitritation, and an anaerobic ammonia oxidation step for mixing waste water obtained by the nitritation step is mixed with low-concentration ammonia-containing waste water, and denitrifying nitrogen in the obtained mixed waste water.;SELECTED DRAWING: Figure 2;COPYRIGHT: (C)2017,JPO&INPIT