膜曝气与生物载体对单机自养脱氮反应器性能的影响

Effect of Aeration and Bio-Carriers on Performance of a Single-Stage Autotrophic Nitrogen Removal Reactor

以人工配制的模拟高氨氮废水为处理对象，设计一种膜分离单级自养脱氮反应器，考察了反应器的运行性能．在无外加有机碳源，反应器进水氨氮浓度150mg／L，温度（30±1）℃，溶解氧0．6—1．0mg／L，水力停留时间24h的条件下，系统对氨氮及总氮的去除率分别达到了80％及81％，显示出该反应器对高氨氮废水处理具有一定的优越性．更改曝气条件并通过对悬浮活性污泥体系与生物膜体系的对比，获得最优化的反应条件．

The performance and molecular biology of single-stage autotrophic nitrogen removal reactor which disposed of simulating high ammonia-nitrogen wastewater are studied. Without extra organic carbon, the system of single-stage autotrophic nitrogen removal suspended sludge has advantage of removing ammonium. The results show that in the conditions of concentration of ammonia 150 rag/L, hydraulic retention time （HRT） 24h at 30 ± 1℃ , and DO0.6 - 1.0 mg/L, the removal efficiency of NH4＋ - N and TN are 80% and 81% respectively.