Agdag O N, Sponza D T
Pamukkale University, Engineering Faculty, Environmental Eng. Dept. K1n1kl1 Campus Denizli, Turkey.
Environ Technol. 2008 Feb;29(2):183-97. doi: 10.1080/09593330802028758.
In this study COD, ammonia and nitrate were treated through methanogenesis, nitrification denitrification and anammox processes in anaerobic-aerobic and anaerobic/anoxic sequential in leachate samples produced from municipal solid waste in an anaerobic simulated landfilling bioreactor. The experiments were performed in an upflow anaerobic sludge blanket reactor (UASB), aerobic completely stirred tank reactor (CSTR) and upflow anaerobic/anoxic sludge blanket reactor (UA/A(N)SB). Hydraulic retention times in anaerobic, aerobic and anaerobic/anoxic stages were 1, 3.6 and 1 days, respectively, through 244 days of total operation period with 168 days of adaptation period of microorganisms to the reactors. The organic loading rates increased from 5.9 to 50 kg COD m(-3) day(-1). The total COD and TN removal efficiencies of the anaerobic-aerobic-anoxic system were 96% and 99%, respectively, at an influent OLR as high as 50 kg COD m(-3) day(-1). The maximum methane percentage in the UASB reactor was 82% while the methane percentage was zero in UA/A(N)SB reactor for the aforementioned OLR at the end of steady-state conditions. NH4-N removal efficiency of the aerobic reactor was 90% while anaerobic ammonia oxidation was measured as 99% in the anoxic reactor. The denitrification efficiency was 99% in the same reactor. Total TN removal of the whole system was 99%.
在本研究中，通过厌氧-好氧以及厌氧/缺氧顺序处理城市固体废弃物厌氧模拟填埋生物反应器渗滤液样品中的化学需氧量（COD）、氨和硝酸盐，处理过程包括甲烷生成、硝化反硝化和厌氧氨氧化。实验在升流式厌氧污泥床反应器（UASB）、好氧完全搅拌槽式反应器（CSTR）和升流式厌氧/缺氧污泥床反应器（UA/A(N)SB）中进行。在总共244天的运行期内，厌氧、好氧和厌氧/缺氧阶段的水力停留时间分别为1天、3.6天和1天，其中微生物对反应器的适应期为168天。有机负荷率从5.9增加到50 kg COD m(-3) day(-1)。在进水有机负荷率高达50 kg COD m(-3) day(-1)时，厌氧-好氧-缺氧系统的总COD和总氮去除效率分别为96%和99%。在稳态条件结束时，对于上述有机负荷率，UASB反应器中的最大甲烷百分比为82%，而UA/A(N)SB反应器中的甲烷百分比为零。好氧反应器的NH4-N去除效率为90%，而缺氧反应器中厌氧氨氧化的测量值为99%。同一反应器中的反硝化效率为99%。整个系统的总氮去除率为99%。
