生物砂滤池除氨氮效果及影响因素分析

生物砂滤池去除NH4^＋ -N的效果优于普通砂滤池，是一种经济、有效的给水处理技术。以邯郸市滏阳河微污染原水为对象，研究了温度、NH4^＋ -N浓度、CODMn浓度对生物砂滤池去除水中NH4^＋ -N的影响。结果表明：水温是影响生物砂滤池去除NH4^＋ -N效果的主要因素，水温越高则对NH4^＋ -N的去除效果越好。在NH4^＋ -N浓度不高、水温为常温（或较高）务件下，原水NH4^＋ -N浓度对NH4^＋ -N的去除影响较为显著；原水NH4^＋ -N值愈高，其去除率愈高，原水NH4^＋ -N浓度变化对NH4^＋ -N去除效果的影响越小。在水温相同的情况下，当原水CODMn值和NH4^＋ -N值均较大时，CODM。值对去除NH4^＋ -N影响显著。

Effect of Biological Quartz Sand Filter on NH+4 -N Removal and Its Affecting Factors

Biological sand filter is an economical and effective process and the NH~+_4-N removal effect is better than that of general sand filter.Influencing factors such as temperature,concentration of NH~+_4-N and COD_(Mn) of the raw water on NH~+_4-N removal from micro-polluted water of Fuyang River were studied.The results show that temperature is the most important factor,the higher the temperature of the raw water,the higher the removal rate of NH~+_4-N.The raw water NH~+_4-N concentration can affect its removal rate apparently under the condition of normal NH~+_4-N concentration and normal or high temperature of the water.The higher the NH~+_4-N concentration,the higher the removal rate,but the change of concentration has less influence on removal efficiency.At the same temperature,when the concentration of COD_(Mn) and NH~+_4-N are both higher,COD_(Mn) concentration affects NH~+_4-N removal apparently.