UAF反应器实现厌氧氨氧化反应的试验

目的研究UAF（升流式厌氧生物滤床）反应器实现厌氧氨氧化反应快速去除水中总氮问题．方法试验用水为人工配制，采用城市污水处理厂厌氧消化污泥作为接种污泥，在温度为35℃、pH为7．0～8．0的条件下，通过逐渐提高NH4^＋N与NO2^-N的负荷培养厌氧氨氧化细菌．结果反应器连续运行约156d后，NH4^＋-N和NO2^--N的去除率分别达到50％、55％，获得的具有厌氧氨氧化活性的污泥为棕红色，并在反应器的下部形成了颗粒污泥；试验末期通过向进水中投加消氧剂抗坏血酸，NH4^＋-N与NO2^--N的去除率分别提高到71％和73％．结论利用UAF反应器成功实现了厌氧氨氧化工艺的快速启动．

Study on the Start-up of Anaerobic Ammonia Oxidation Process in UAF Reactor

Start-up of anaerobic ammonia oxidation process in UAF reactor was studied. The synthetic NH4^＋- N and NO2^- - N wastewater was used as influent, inoculated with normal anaerobic digestion sludge, when operation was at temperature of 35℃ ,pH value of 7.0 - 8.0 ,the NH4^＋ -N and NO2^- -N removal efficiencies after 156 days were 50% ,55% ,respectively. The sludge with high Anammox activity was brown. The granular sludge was found at the bottom of the bioreactor. Start-up of anaerobic ammonia oxidation process was successfully achieved, and the effect of DO is a key to the start-up of Anammox process.