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采用铁锰复合氧化物活性滤料滤池进行了低温高氨氮地表水处理试验研究,并与普通石英砂生物滤池进行对比。结果表明,铁锰复合氧化物活性滤料滤池对地表水中氨氮具有良好的去除效果,与普通石英砂生物滤池相比,在抗水力负荷、浓度负荷和反冲洗方面更有优势;当滤速分别为4、6、8 m/h时,铁锰复合氧化物活性滤料滤池对氨氮的平均去除率分别为97.2%、94.3%、93.5%,而相应条件下普通石英砂生物滤池对氨氮的平均去除率仅为84.1%、64.7%、58.0%;在滤速为8 m/h、滤层厚度为110 cm条件下,铁锰复合氧化物活性滤料滤池去除氨氮的最大浓度为2.30 mg/L,而普通石英砂生物滤池去除氨氮的最大浓度仅为1.50 mg/L;对浊度、有机物的去除,铁锰复合氧化物活性滤料滤池与普通石英砂生物滤池效果相当。
Ferric-manganese composite oxide active filter was used to study the surface water treatment experiment of low temperature and high ammonia nitrogen, and compared with the common quartz sand biofilter. The results show that the Fe-Mn composite oxide active filter media has a good removal effect on ammonia nitrogen in surface water. Compared with the common quartz sand biofilter, it has more advantages in anti-hydraulic load, concentration load and backwashing. When the speed was 4,6,8 m / h respectively, the average removal rates of ammonia nitrogen for the ferroferricum composite oxide active filter media were 97.2%, 94.3% and 93.5% respectively, while the average quartz sand biofilter The average removal rate of ammonia nitrogen was only 84.1%, 64.7% and 58.0%. Under the condition of filtration velocity of 8 m / h and filter thickness of 110 cm, the maximum concentration of ammonia nitrogen in the ferroferric oxide composite active filter Was 2.30 mg / L, while the maximum concentration of ammonia nitrogen removal by ordinary quartz sand biofilter was only 1.50 mg / L. For the removal of turbidity and organic matter, the activity of ferromanganese composite oxide active filter and ordinary quartz sand biofilter The effect is quite