研究了具有全程自养脱氮作用的生物膜中无机碳源浓度、pH值、溶解氧（DO）对全程自养脱氮的影响。结果表明，当NaHCO3浓度从1.75g/L上升到2.50g/L时，反应体系中的pH 值从7.6～8.0上升到8.8左右，氨氮转化率和总无机氮去除率分别急剧下降到53%和48.8%。在进水氨氮负荷为60g/（m3·d）时，最佳DO 应控制在0.5～0.7mg/L，此时氨氮转化率达到90%以上。

在厌氧反应1h，好氧反应4h，缺氧反应2h 的运行条件下，研究了序批式反应器中好氧颗粒污泥同步除磷脱氮的情况，并对好氧颗粒污泥除磷脱氮的机理进行了探讨。试验结果表明，该系统对氮、磷和有机物具有良好的去除效果，对氨氮、总无机氮、磷、COD的去除率分别达到89.2%～98.9%，81.3%～89.4%，86.8%～90.0% 和82.7%～96.6%。

A process for autotrophic nitrogen removal named aerobic/anoxic deammonification wherein NH4+ is oxidized by nearly 50% to NO2 -and subsequently the ammonia is converted together with the nitrite to molecular nitrogen (N2 gas), has come to full-scale application within the last few years. In this research, sludge from a biological rotation disk located at a landfill leachate plant at Mechernich, Germany, which is capable of performing the deammonification process, was used as seed sludge for acclimating deammonification activities in laboratory scale batch-reactors. In parallel, the same tests were performed with normal activated sludge. Research results indicated that deammonification activities could be obtained from the seeded reactor and also, with limited performance, from normal activated sludge in a single SBR system after several months acclimation. It was also seen that oxygen is an important factor that influences the deammonification from both the acclimatization process and process running. Further results were approved that report an impact of nitrite as a process intermediate on the closely related process of anaerobic ammonia oxidation ("Anammox"). However, limiting concentrations on a bacteria population performing deammonification were found to be different to those reported for a pure Anammox-culture. Also the influence of another intermediate, hydrazine, was tested for speeding up the acclimating process by inducing the deammonification activities and recovering the activities of deammonification from nitrite inhibition.

Modeling for nitritation proce ss wa s discussed and analyzed quantitatively for the factors that influence nitrite accumulation. The re sults indicated that pH, inorganic carbon source and Hydraulic Retention Time (HRT) a s well a s bioma ss concentration are the main factors that influenced the conversion ratio of ammonium to nitrite. A constant high pH can lead to a high nitritation rate and re sults in high conversion ratio on condition that free ammonia inhibition do not happen. In a CSTR system, without pH control, this conversion ratio can be monitored by pH variation in the reactor. The pH goe s down far from the inlet level means a strongly nitrite accumulation. High concentration of alkalinity can promoted the conversion ratio by means of accelerating the nitritation rate through providing sufficient inorganic carbon source (carbon dioxide). When inorganic carbon source wa s depleted, the nitritation proce ss stopped. HRT adjustment could be an efficient way to make the nitritation system run more flexible, which to some extent can meet the requirements of the fluctuant of inlet parameters such a s ammonium concentration, pH, and temperature and so on. Bioma ss concentration is the key point, e specially for a CSTR system in steady state, which wa s normally circumscribed by the characteristics of bacteria and may also affected by aeration mode and can be increa sed by prolonging the HRT on the condition of no nitrate accumulation when no recirculation available. The higher the bioma ss concentration is, the better the nitrite accumulation can be obtained.

以颗粒污泥为研究对象，在序批式反应器中研究了不同运行模式（有厌氧段和无厌氧段两种模式）和不同碳氮比（COD 与NH4+-N质量比取6、10、14）下，颗粒污泥对氨氮、总无机氮的去除情况。比较了2 种运行模式应用于颗粒污泥脱氮中的差别和优劣。采用分段函数的方法对不同碳氮比下的氨氮去除曲线进行了分割，对曝气第一阶段（碳源富足阶段）和曝气第二阶段（碳源贫乏阶段）的氨氮去除曲线进行了拟合，发现其线性化特征明显。计算了不同碳氮比下曝气前后期氨氮去除速率，并简要分析了好氧颗粒污泥同步硝化反硝化脱氮的作用机理。