METHOD OF TREATING ORGANIC MATERIAL-CONTAINING WATER

To stably and efficiently treat organic material-containing water that contains a high concentration of an organic material of a fine diameter.SOLUTION: There is provided a method of treating organic material-containing water, which is characterized by comprising a cationic coagulation step of adding a cationic coagulant to organic material-containing water that contains a fine diameter organic material of a particle diameter of 0.022 to 0.45 μm at a concentration of 300 to 6000 mg/L to carry out a coagulation reaction thereof, a centrifugal dehydration step of separating water treated by the cationic coagulation step by a centrifugal dehydrator, and a solid-liquid separation step of carrying out solid-liquid separation of water separated by the centrifugal dehydration step.SELECTED DRAWING: Figure 1 【課題】高濃度の微細径有機物を含む有機物含有水に対して安定かつ効率的な排水処理を行う。【解決手段】粒子径０．０２２〜０．４５μｍの微細径有機物の濃度が３００〜６，０００ｍｇ／Ｌである有機物含有水に、カチオン性高分子凝集剤を添加して凝集反応させるカチオン凝集工程と、カチオン凝集処理水を遠心脱水機により脱水する遠心脱水工程と、遠心脱水工程の分離水を固液分離する固液分離工程とを含むことを特徴とする有機物含有水の処理方法。【選択図】図１