厌氧氨氧化反应器启动方法的研究

 研究了以自养型反硝化生物膜启动厌氧氨氧化反应器的可行性.结果表明,采用先培养自养型反硝化生物膜,再启动厌氧氨氧化反应器的方法,可在110d内成功启动厌氧氨氧化反应器,反应器的容积总氮负荷为0.145kg/(m³d),NH₄⁺-N和NO₂^--N去除率分别为98.59%和99.08%.启动初期,厌氧氨氧化反应器的出水pH值低于进水pH值,随启动过程的推进,进出水pH值趋向一致.稳态运行时,反应器内呈碱性,NH₄⁺-N去除量、NO₂^--N去除量和NO₃^--N生成量的比值为1:1.01:0.19.启动过程中,NH₄⁺-N去除量与NO₂^--N去除量、NO₃^--N生成量之间的比值,以及反应器内pH值和污泥颜色的变化,可以指示厌氧氨氧化反应器的启动进程.

Studies on start-up technique of anammox bioreactor

The feasibility of start-up of anammox bioreactor, using autotropic denitrifying biofilm was studied. The anammox bioreactor could be started up successfully within 110d, adopting the method of cultivating firstly autotrophic denitrifying biofilm, then start-up of the bioreactor. The volumetric total nitrogen loading was 0.145kg/(m3.d), and the removal rate of NH4 -N and NO2--N was 98.59% and 99.08%, respectively. At the initial period of start-up, the effluent pH value of the bioreactor was lower than the influent pH value, and tended to be unanimous with the advance of the start-up process. At steady operation, the liquid pH value in the bioreactor was alkaline, the ratio of removed NH4 -N, NO2--N and produced NO3--N was 1:1.01:0.19. In the start-up process, the ratio of removed NH4 -N, NO2--N and produced NO3--N as well as the change of pH value and biofilm color could indicate the start-up course of the bioreactor.