摘要
结合水厂水处理常规工艺进行中试,研究在普通砂滤池上方悬挂生物填料强化去除饮用水中的NH3-N。结果表明,滤料、填料、悬挂密度以及不同滤层等均对NH3-N的去除效果有影响,旧石英砂滤柱(即采用水厂现有滤池滤料)较新石英砂滤柱(即新购石英砂滤料)具有更强的NH3-N去除能力,且去除效果更稳定;上层滤床(50 cm)对砂滤床过滤去除NH3-N贡献最高;悬挂弹性填料较组合填料可更好地提高生物填料-砂滤单元对NH3-N去除效果;增大生物填料悬挂密度可提高生物量,在进水NH3-N含量较高时具有良好的去除率;且反冲洗对NH3-N去除效果也有较大影响。
Combined with water conventional treatment processes, a pilot test was carried out to study the effect of hanging biological filler over common sand filter on the removal of NH3-N. Results indicated that the removal of NH3-N was affected by filter, filler, suspension density as well as different filter layers. Compared to the new quartz sand filtration column （i.e. new quartz sand）, NH3-N was removed more efficiently and stably by old quartz sand filtration colunm （i.e. filter material from the existing filter champer）. Upper sand filter bed （50 cm） contributed the most to remove NH3-N. Elastic filler was better than the combined filler in removing NH3-N. Increased biological filler density could increase biomass. Better removal appeared when the influent NH3-N concent was higher. And the backwash also had a greate impact on ammonia-N removal.
出处
《水处理技术》
CAS
CSCD
北大核心
2015年第2期102-107,共6页
Technology of Water Treatment
