ACTIVATED SLUDGE ACCLIMATION METHOD, ORGANIC WASTEWATER TREATMENT METHOD, AND ORGANIC WASTEWATER TREATMENT APPARATUS

To provide an acclimation method for activated sludge, a method for treating organic wastewater, and an apparatus for treating organic wastewater that enables stable, efficient, and energy-saving biological treatment of organic wastewater.SOLUTION: A method for acclimating activated sludge includes introduction of organic wastewater containing organic nitrogen into a treatment tank containing activated sludge, and addition of ammonia-form nitrogen to the organic wastewater in the treatment tank so that the weight ratio of BOD-to-ammonia nitrogen ratio of the organic wastewater in the treatment tank becomes 100:5.0 to 20.SELECTED DRAWING: Figure 2 【課題】有機性排水の生物処理を安定的かつ効率良く、省エネルギーで行うことが可能な活性汚泥の馴致方法、有機性排水の処理方法及び有機性排水の処理装置を提供する。【解決手段】活性汚泥を収容する処理槽内に有機態窒素を含む有機性排水を導入し、処理槽内の有機性排水のＢＯＤ：アンモニア態窒素の重量比が１００：５．０～２０となるようにアンモニア態窒素を添加して活性汚泥を馴致させる工程を有することを特徴とする活性汚泥の馴致方法である。【選択図】図２