基于碳源需求的A-A^2/O处理低C/N污水的中试研究

Study on pilot-scale A-A^2/O process for low C/N municipal wastewater based on carbon source demand

以实际生活污水处理为研究内容,考察了不同进水点对A-A^2/O系统生物脱氮除磷的效果,结果表明,进水流量分配对系统去除COD_(Cr)及NH_3-N影响不明显,对总氮和总磷去除则影响明显;缺氧区增加进水有利于为缺氧段的反硝化脱氮提供充足的碳源,进而提高反硝化速率和实现高效脱氮;分段进水有利于碳源的合理分配。

Using domestic sewage with low C/N as treatment objective,the performance of A-A^2/O process for denitrification and phosphorus removal was investigated. The results showed that the inflow distribution ratio value had less effect on removal of CODCrand NH3-N than TN and TP. Increase inflow distribution ratio in the anoxic tank is conducive to provide adequate carbon source for the denitrification anoxic,thereby increasing the rate of denitrification and efficient denitrification,indicating step feed conducive to the rational allocation of carbon source.