【摘要】 目的确定最佳混凝预氧化过滤工艺条件,解决低温微污染地下水处理难度较大的问题.方法在低温实验室配制微污染地下水,通过投加混凝剂,ClO₂、NaClO两种预氧化剂以及锰砂、陶粒锰砂二级过滤,以Fe、Mn、COD_Mn、氨氮（NH₄⁺-N）、浊度等指标为参照,对比两种预氧化剂分别和两种滤料二级过滤的运行效果.结果混凝-二氧化氯预氧化-陶砂锰砂二级过滤工艺对Mn的去除效果在标准值边缘,Fe、COD_Mn、NH₄⁺-N、浊度等指标的质量浓度均满足《生活饮用水卫生标准检测方法》（GB/T5750—2006）,该工艺对微污染地下水有较高的去除率.结论混凝-二氧化氯预氧化-陶砂锰砂二级过滤工艺对低温微污染地下水处理效果较好.更多还原

【Abstract】 The best operating conditions for coagulation oxidation filtration process is determined to solve the problem of low-temperature micro-polluted groundwater treatment. All experiments were carried out in low-temperature laboratory. The micro-polluted groundwater was treated by adding coagulant and two pre-oxidant-ClO₂,NaClO,then through manganese sand,ceramist manganese sand filter. Fe,Mn,CODMn,ammonia nitrogen（ NH₄⁺-N）,turbidity and other indicators were detected to obtain the best process. The results showthat the concentration of Mn in the micro-polluted groundwater treated by the process of coagulation + chlorine dioxide oxidation + secondary filtration of ceramic sand manganese sand is on the edge of the standard,Fe,CODMn,NH₄⁺-N,the concentration of the turbidity and other indicators meet the "drinking water health standard testmethod"（ GB/T5750—2006）. So the process of coagulation + chlorine dioxide oxidation + secondary filtration of ceramic sand manganese sand can be adopted to treat micro-polluted groundwater under lowtemperature.更多还原