通过在进水中投加无机碳源(碳酸氢钠),研究无机碳源(IC)对一体化厌氧氨氧化反应器脱氮性能的影响.结果发现,进水IC含量对一体化厌氧氨氧化反应器脱氮性能有显著的影响.当进水IC的质量浓度为1.5 g/L时,反应器运行状况良好,NH3-N去除率高达98.8％,TN去除率达到87％;当其质量浓度降低至1.0 g/L时,NH3-N去除率降至85％,TN去除率降至75％;当其质量浓度降至0.5 g/L时,NH3-N去除率仅为69％,TN去除率降至61％.当进水IC的质量浓度恢复至1.5 g/L后,出水的NH3-N的质量浓度迅速降低至3 mg/L左右,去除率恢复至98.8％,TN去除率也上升至87％,说明IC含量对一体化厌氧氨氧化反应器的抑制作用具有可恢复性.较高IC含量有利于提高一体化厌氧氨氧化反应器的脱氮性能.“,”Abstrace:The effect of inorganic carbon (IC),by adding sodium bicarbonate,was investigated in a one-stage anmmox reactor.The results showed that the nitrogen removal performance was largely affected by the influent IC content.The removal rate of NH3-N and TN reached 98.8％ and 87％ respectively,with mass concentration ofIC was 1.5 g/L.The removal rate of NHrN and TN decreased to 85％ and 75％ respectively,when mass concentration ofIC was adjusted to 1.0 g/L.Furthermore,the removal rate of NHrN and TN were only 69％ and 61％,respectively,with mass concentration ofIC was 0.5g/L.When IC mass concentration in feed water returned to 1.5 g/L,the mass concentration of NH3-N in effluent decreased rapidly to 3 mg/L and the removal rate reached 98.8％,demonstrating that the inhibiting effect of IC in Nitritation-Anammox reactor showed the recoverability.It was indicated that higher IC content has positive effect on nitrogen removal performance in one-stage anammox reactor.