污水厂深度处理氮磷示范工程设计探讨

Demonstration Engineering for Advanced Nitrogen and Phosphorus Treatment in Sewage Treatment Plant

在某污水处理示范工程设计中,通过对污水处理厂二级处理的现状水质及处理设施的分析,采用优化现状氮磷处理系统以及设置同步脱氮除磷深度处理滤池的工艺方案,即生物处理+同步脱氮除磷滤池工艺。实际实施中,只采用了脱氮除磷深度处理滤池工艺,运行结果表明,出水水质和经济指标均达到预期目标。出水水质优于一级A排放标准,能够稳定达到TN<10 mg/L、TP<0.3 mg/L的目标。

By analyzing the status of the secondary effluent quality and treatment facilities, the process scheme of optimizing the current nitrogen and phosphorus treatment system and setting the advanced treatment filter for simultaneous nitrogen and phosphorus removal, i. e. biological treatment （adding carbon source into anoxic zone） ＋ filter for simultaneous nitrogen and phosphorus removal was adopted in the design of a sewage treatment demonstration engineering. The running results showed that the effluent quality and the economic indicators reached the expected goal. The effluent quality could meet the first level A criteria with TN 〈 10 mg/L, and TP 〈 0.3 mg/L. y words：