采用生物接触氧化技术预处理微污染原水 ,并和水厂常规处理工艺进行了对比。中试结果表明 ,原水浊度为 50～ 2 0 0NTU、氨氮浓度为 1～ 10mg/L、水温为 18～ 30℃时 ,生化池对氨氮的去除率为 6 0 %～ 80 % ,CODMn去除率为 0 .5%～ 2 5% ,UV2 54 的去除率为 1%～ 15% ;正常运行时 ,较高浊度 (2 0 0～ 80 0NTU)的冲击不会明显影响生化池对氨氮和CODMn的去除 ;生化池的亚硝酸盐氮去除率为 2 0 %～ 50 % ,在原水氨氮浓度较高时亚硝酸盐氮积累增多 ;增加生物接触氧化预处理工艺 ,显著提高了后续混凝沉淀池和砂滤池的除污染效果 Biological contact oxidation technology was used to pretreat the slightly polluted raw water and compared with the conventional treatment process of waterworks. The results of the pilot test showed that the removal efficiency of ammonia nitrogen in the biochemical pool was 60% ~ 80% when the turbidity of raw water was 50 ~ 200NTU, the concentration of ammonia nitrogen was 1 ~ 10mg / L and the temperature was 18 ~ 30 ℃. The removal rate of CODMn And the removal rate of UV2 54 was 1% ~ 15%. In normal operation, the impact of high turbidity (200 ~ 80 0NTU) did not affect the biochemical pool of ammonia nitrogen and CODMn The removal rate of nitrite nitrogen in biochemical pool is 20% -50%, and the accumulation of nitrite nitrogen is increased when the concentration of ammonia nitrogen in raw water is higher; the pretreatment process of biological contact oxidation is increased, which significantly improves the subsequent coagulation sedimentation tank And the filter effect of sand filter