WATER TREATMENT METHOD AND APPARATUS FOR WASTEWATER CONTAINING NITROGEN AND ORGANIC MATTER

To provide a technology to achieve a high T-N removal rate in a short treatment time for wastewater containing organic matter and Kjeldahl nitrogen while simultaneously treating the organic matter.SOLUTION: A water treatment method for simultaneously treating organic matter and Kjeldahl nitrogen in the water to be treated by passing water containing organic matter and Kjeldahl nitrogen through a treatment tank filled with a carrier under aerobic conditions, in which the ratio of the amount of BOD and Kjeldahl nitrogen flowing into the treatment tank (amount of BOD/Kjeldahl nitrogen) is maintained within a range of 8 or more.SELECTED DRAWING: Figure 1 【課題】有機物及びケルダール窒素を含む排水の処理において、有機物を同時に処理しながら、短い処理時間で高いＴ−Ｎ除去率を達成する技術の提供。【解決手段】有機物及びケルダール窒素を含む被処理水を、担体を充填した好気条件下の処理槽に通水することにより、被処理水中の有機物及びケルダール窒素を同時に処理する水処理方法において、前記処理槽へ流入するＢＯＤ量とケルダール窒素量の比（ＢＯＤ量／ケルダール窒素量）を８以上の範囲に保つことを特徴とする水処理方法。【選択図】図１