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咸阳市某污水处理厂原工艺功能比较单一,出水氨氮超标严重,采用倒置A2/O工艺进行升级后,仍不能稳定达标,应用固定化生物催化剂(IBC)解决了这一问题。结果表明,投加IBC后,系统对NH3-N、TN、COD、TP的去除率分别达到97.1%、86.2%、96.8%、83.7%,月均污泥排放量比加药前减少38.3%,好氧池MLSS可保持在2 500mg/L以下。不但保障了出水稳定达标,还起到从源头污泥减量的效果,可为类似污水处理厂解决氨氮超标和污泥减量问题提供借鉴。
Xianyang City, a sewage treatment plant of the original process function is relatively simple, serious ammonia nitrogen exceeded, the use of inverted A2 / O process upgrade, still can not be stable compliance, the application of immobilized biocatalyst (IBC) to solve this problem. The results showed that the removal rates of NH3-N, TN, COD and TP reached 97.1%, 86.2%, 96.8% and 83.7% respectively after the IBC was dosed. The monthly sludge discharge decreased 38.3% Aerobic MLSS can be maintained below 2 500mg / L. Not only guarantee the stability of effluent standards, but also play the role of sludge reduction from the source, for similar sewage treatment plants to solve the problem of excessive ammonia and sludge reduction provide a reference.