Li Yun, Li Jun, Zhao Baihang, Wang Xiujie, Zhang Yanzhuo, Wei Jia, Bian Wei
a College of Architecture and Civil Engineering , Beijing University of Technology , Beijing , People's Republic of China.
Environ Technol. 2017 Sep;38(18):2335-2343. doi: 10.1080/09593330.2016.1259356. Epub 2016 Nov 24.
A coupled system of membrane bioreactor-nitritation (MBR-nitritation) and up-flow anaerobic sludge blanket-anaerobic ammonium oxidation (UASB-ANAMMOX) was employed to treat mature landfill leachate containing high ammonia nitrogen and low C/N. MBR-nitritation was successfully realized for undiluted mature landfill leachate with initial concentrations of 900-1500 mg/L [Formula: see text] and 2000-4000 mg/L chemical oxygen demand. The effluent [Formula: see text] concentration and the [Formula: see text] accumulation efficiency were 889 mg/L and 97% at 125 d, respectively. Half-nitritation was quickly realized by adjustment of hydraulic retention time and dissolved oxygen (DO), and a low DO control strategy could allow long-term stable operation. The UASB-ANAMMOX system showed high effective nitrogen removal at a low concentration of mature landfill leachate. The nitrogen removal efficiency was inhibited at excessive influent substrate concentration and the nitrogen removal efficiency of the system decreased as the concentration of mature landfill leachate increased. The MBR-nitritation and UASB-ANAMMOX processes were coupled for mature landfill leachate treatment and together resulted in high effective nitrogen removal. The effluent average total nitrogen concentration and removal efficiency values were 176 mg/L and 83%, respectively. However, the average nitrogen removal load decreased from 2.16 to 0.77 g/(L d) at higher concentrations of mature landfill leachate.
采用膜生物反应器亚硝化（MBR - 亚硝化）与上流式厌氧污泥床 - 厌氧氨氧化（UASB - ANAMMOX）耦合系统处理含有高氨氮和低碳氮比的成熟垃圾渗滤液。对于初始浓度为900 - 1500 mg/L [公式：见正文] 和2000 - 4000 mg/L化学需氧量的未稀释成熟垃圾渗滤液，成功实现了MBR - 亚硝化。在125 d时，出水[公式：见正文]浓度和[公式：见正文]积累效率分别为889 mg/L和97%。通过调整水力停留时间和溶解氧（DO）快速实现了半亚硝化，低DO控制策略可实现长期稳定运行。UASB - ANAMMOX系统在低浓度成熟垃圾渗滤液下表现出高效的氮去除效果。进水底物浓度过高时，氮去除效率受到抑制，且系统的氮去除效率随成熟垃圾渗滤液浓度的增加而降低。将MBR - 亚硝化和UASB - ANAMMOX工艺耦合用于成熟垃圾渗滤液处理，共同实现了高效的氮去除。出水平均总氮浓度和去除效率分别为176 mg/L和83%。然而，在较高浓度的成熟垃圾渗滤液下，平均氮去除负荷从2.16降至0.77 g/(L·d)。
