Division of Environmental Engineering, Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan.
Bioresour Technol. 2011 Jul;102(13):6801-7. doi: 10.1016/j.biortech.2011.04.011. Epub 2011 Apr 9.
The partial nitrification reactor was successfully started up and operated stably for more than 250 days with a maximum nitrite production rate of 1.12 kg-Nm(-3)day(-1). The important factors for successful partial nitrification were high ammonium loading rate (>1.0 kg-Nm(-3)day(-1)) and relatively high pH (ca. 8.0), giving high free ammonia concentrations (>10mg NH(3)-NL(-1)). In addition, the air flow rate must be controlled at the ratio of air flow rate to ammonium loading rate below 0.1 (m(air)(3)day(-1))/(kg-Nm(-3)day(-1)). After the establishment of stable partial nitrification, the effluent NO(2)(-)-N/NH(4)(+)-N ratio and effluent NO(3)(-)-N concentration were 1.20 ± 0.33 and 1.2 ± 1.0mg-NL(-1), respectively, which was then fed into an granular-sludge anammox reactor. Consistent nitrogen removal was achieved for more than 250 days with a maximum nitrogen removal rate of 15.0 kg-TNm(-3)day(-1).
成功启动和稳定运行部分硝化反应器超过 250 天，亚硝酸盐最大生成速率为 1.12kg-Nm(-3)day(-1)。成功实现部分硝化的重要因素是高氨氮负荷（>1.0kg-Nm(-3)day(-1)）和相对较高的 pH 值（约 8.0），从而产生高游离氨浓度（>10mgNH(3)-NL(-1)）。此外，空气流量必须控制在空气流量与氨氮负荷比低于 0.1(m(air)(3)day(-1))/(kg-Nm(-3)day(-1))。在稳定实现部分硝化后，出水 NO(2)(-)-N/NH(4)(+)-N 比和出水 NO(3)(-)-N 浓度分别为 1.20±0.33 和 1.2±1.0mg-NL(-1)，然后将其送入颗粒污泥厌氧氨氧化反应器。在超过 250 天的时间里，实现了一致的脱氮效果，最大脱氮速率达到 15.0kg-TNm(-3)day(-1)。
