流量分配比对改良型多级A/O工艺去除污染物的影响

改良型多级A/O工艺处理低碳源(C/N4+-N分别低于23.7、2.23 mg/L,但对系统脱氮除磷及反硝化能力的影响较大。流量分配比为5:3:1:1时,系统能够有效利用进水碳源进行反硝化,且反硝化效果最好,出水TN、TP浓度分别为14.15和0.99 mg/L,去除率分别为79.6%和79.5%。总体而言,改良型多级A/O工艺对低碳源生活污水中污染物有很好的去除效果,这可为实际生活污水的处理提供理论依据。

Influence of influent flow distribution ratios on pollutants removal by multi-stages A/O process

To make full use of the carbon source in sewage and improve the removal efficiency of pollutants, a modified multistage A/O process was applied to treat sewage of a low carbon source (C/N4+-N values were below 23.7 and 2.23 mg/L, respectively. When the flow distribution ratio was 5:3:1:1, the system could denitrify effectively using sewage as the carbon source, and this achieved the optimum efficiency of denitrification. The effluent TN and TP were 14.15 and 0.99 mg/L, respectively, and the removal efficiencies were 79.6% and 79.5%, respectively. In summary, a modified multistage A/O process offers great efficiency for the removal of pollutants in sewage with low carbon sources, and will provide a theoretical basis for domestic sewage treatment.