In this study, the partial nitritation and anammox (PN-A) process was initiated within 30 days in a sequencing batch biofilm reactor (SBBR) by employing pre non-aeration and post non-aeration with fixed aeration rates. The average ammonia removal efficiency (ARE), total nitrogen removal efficiency (TNRE) of 98.5±1.5% and 89.5±1.6% were achieved. By doubling aeration rate and agitation rate and adopting pre non-aeration, the TNRR was promoted from 0.135±0.013 kg N·m^-3·d^-1 to 0.285±0.015 kg N·m^-3·d^-1, obtaining an average ARE and TNRE of 97.5±1.5% and 85.5±2.6%. Nitric oxide might induce anaerobic ammonia oxidation bacteria (AnAOB) during the start-up stage, and could be an indicator for synergetic state between ammonia oxidation bacteria (AOB) and AnAOB. Lower nitrous oxide emission factor of 0.51% was obtained. The abundance of AOB, AnAOB and nitrite oxidation bacteria (NOB) accounted for 1.6%, 19.3% and 0.3%, respectively.

在这项研究中，部分硝化和厌氧氨氧化（PN-A）工艺是在定序分批生物膜反应器（SBBR）中于30天内通过采用固定通气率的非通气前和通气后通气开始的。平均氨去除效率（ARE），总氮去除效率（TNRE）分别为98.5±1.5％和89.5±1.6％。通过将曝气速率和搅拌速率加倍并采用非曝气，TNRR从0.135±0.013 kg N·m ^-3 ·d ^-1提升到0.285±0.015 kg N·m ^-3 ·d ^-1，平均ARE和TNRE分别为97.5±1.5％和85.5±2.6％。一氧化氮可能会在启动阶段诱导厌氧氨氧化细菌（AnAOB），并且可能是氨氧化细菌（AOB）与AnAOB之间协同状态的指标。获得较低的一氧化二氮排放因子，为0.51％。AOB，AnAOB和亚硝酸盐氧化细菌（NOB）的丰度分别占1.6％，19.3％和0.3％。