有机碳源对一体化厌氧氨氧化反应器脱氮性能的影响

Effect of Organic Carbon Source on Nitrogen Removal Performance of One-Stage Anammox Reactor

试验通过在进水中投加有机碳源(白糖),研究有机碳源对一体化厌氧氨氧化反应器脱氮性能的影响。试验结果表明:进水COD浓度对一体化厌氧氨氧化反应器脱氮性能产生明显的影响。当进水中COD浓度约为50mg/L时,即可导致系统总氮去除率大幅度下降,出水总氮去除率由不添加COD的87.8%降至76%,氨氮去除率由不添加COD的98.8%降至85%;当进水COD浓度上升至约100mg/L时,出水总氮的去除率由不添加COD的87.8%降至69%,氨氮去除率由不添加COD的98.8%降至77%;当进水COD浓度约为100mg/L时,并将调节槽曝气量由原来的0.4L/min增至0.6L/min,系统出水水质明显得到优化,总氮去除率恢复到未投加COD时的水平。有效地控制一体化厌氧氨氧化反应器内有机碳源的量,能明显地提高系统的脱氮效果。

The paper investigates the effect of organic carbon source on the nitrogen removal performance of one-stage anammox reactor by adding sugar as the organic carbon source. The results of experiment show that influent COD concentration has significant effects on the nitrogen removal performance of one-stage anammox reactor. When the concentration of influent COD is about 50 mg/L, the removal rate of total ni- trogen drops sharply from 87. 7% to 76% and the removal rate of ammonia nitrogen drops down from 98.8% to 85%. When the concentration of influent COD increases to about 100 mg/L,the removal rate of total nitrogen decreases from 87. 8% to 69% and the removal rate of ammonia nitrogen decreases from 98.8%to 77%. The effluent quality of the system improves significantly by increasing the aeration quanti- ty in the regulating tank from 0.4 L/min to 0.6 L/min with the influent COD concentration being about 100 mg/L. The nitrogen removal performance can be markedly improved by effectively controlling the quantity of organic carbon source in the one-stage anammox reactor.