垃圾渗滤液配水对UASB-ANAMMOX反应器进行二次启动的研究

Research of the Second Start-up in USAB-ANAMMOX Reactor with Landfill Leachate

通过温度和进水控制对UASB-ANAMMOX反应器内的ANAMMOX菌的反应活性进行充分抑制后,采用垃圾渗滤液配水来进行二次启动.结果表明,二次启动的时间相对较快,在第21 d的NH4+-N的去除率就可以达到96.17%,NO2--N的去除率达到86.77%;由于反硝化的协同作用降低使得COD的去除率有下降的趋势,平均去除量只有60 mg/L;反应启动过程中的平均三氮比即去除的NH4+-N∶去除的NO2--N∶生成的NO3--N=1∶0.75∶0.26;反应成功进行二次启动后的平均三氮比即去除的NH4+-N∶去除的NO2--N∶生成的NO3--N=1∶0.95∶0.26,三氮比中的亚硝氮去除比率较大幅度上升.

The second start-up of anaerobic ammonium oxidation （ANAMMOX） process with landfill leachate was investigated. It works after the ANAMMOX bacteria in the UASB-ANAMMOX reactor have been fully restrained by temperature and influent. The results reveal that the second start-up was faster, and the removal of NH4^＋ -N and NO2^- N was up to 96.17% and 86.77% on the 21th day, respectively. The decrease of the synergetic mechanism of denitrification with ANAMMOX result in a declining trend of the removal of COD and the average quantity of removal was only 60 mg/L. The average ratio of removed ammonia , removed nitrite and produced nitrate was 1：0.75：0.26 in the second start-up process, and it was 1：0.95：0.26 at the stable stage of second start-up of ANAMMOX process. The removal of nitrite in the Three-Nitrogen-Compounds-Ratio has raised significantly.