常温城市污水同步亚硝化-厌氧氨氧化研究

在常温14.7～24.7℃条件下，以城市生活污水为研究对象，采用SBR反应器，通过调整曝气量控制DO浓度为0.05～0.30 mg/Ｌ，进行了同步亚硝化-厌氧氨氧化试验.结果表明，SBR活性污泥反应器可以在常温条件下实现城市污水氨氮的同步亚硝化-厌氧氨氧化反应；DO可以作为其反应终点的指示参数，本试验确定为1 mg/Ｌ；在SBR探索试验中，NH⁺₄-N消耗速率为0.164～0.218　kg/（m³·d），NO^-₃-N产生速率为0.026～0.036　kg/（m³·d），TN脱除速率为0.124～0.194　kg/（m³·d），去除效率为65%～75％；在SBR改进试验中，分别通过提高温度、增设非曝气运行时段和增加厌氧氨氧化菌生物量3个途径，避免了亚硝酸盐的积累，TN去除效率提高至77%～88%.考虑到脱氮速率和实际的工程应用条件，认为增加厌氧氨氧化菌的生物量是提高SBR反应器脱氮效能的优选途径.

Research on CANON Process for Municipal Sewage in Room Temperature

Abstract: In the room temperature 14.7-24.7℃,simultaneous nitrification-ANAMMOX (CANON) process for municipal sewage was tested by SBR while the DO was controlled between 0.05 and 0.30 mg/L. As a result, the research shows that CANON process can be applied to the nitrogen treatment of municipal wastewater in room temperature by SBR. DO can be regarded as the indication parameter of reaction terminal,and 1 mg/L has been confirmed in the experiment. In the exploring SBR experiments, the consumption velocity of NH_4~+ -N was 0.164-0.218 kg/(m~3·d) , the production velocity of NO_3~- -N was 0.026-0.036 kg/(m~3·d) , the removal velocity and efficiency of TN were 0.124-0.194 kg/(m~3·d) and 65%-75% respectively. Additionally, in the improving SBR experiments, there were three methods for avoiding nitrite accumulation and increasing the nitrogen removal efficiency. They were improving temperature, adding non-aeration period of time and increasing the quantity of ANAMMOX bacteria.Therefore, the removal efficiency of TN was increased to 77%-88% through the three ways above. However, in view of the nitrogen removal velocity and the fact of engineering application condition, the third approach was the best to advance the general ability of ANAMMOX.