MOE Key Laboratory of Water and Sediment Sciences/State Key Lab of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China.
Biotechnol Lett. 2012 Mar;34(3):471-4. doi: 10.1007/s10529-011-0801-7. Epub 2011 Nov 22.
The treatment performance of an upflow microaerobic sludge blanket reactor (UMSB) for synthetic domestic wastewater was investigated at two dissolved oxygen (DO) levels, 0.3-0.5 and 0.7-0.9 mg l(-1), focusing on nitrification performance. The higher DO level induced complete nitrification of ammonia nitrogen (NH(3)-N), achieving chemical oxygen demand and NH(3)-N removals of 97 and 92%, respectively. There were consistently significantly higher nitrate nitrogen (NO(3)-N) and nitrite nitrogen (NO(2)-N) levels in the effluent, with ~66% of newly-produced oxidised nitrogen as NO(2)-N. Despite the high nitrification efficiency, only about 23% of the removed NH(3)-N amount from the influent was ultimately transformed into oxidised nitrogen due to the simultaneous nitrification-denitrification. Sludge blanket development and granulation occurred simultaneously in the UMSB.
上流式微氧污泥床反应器（UMSB）处理人工合成生活污水的性能研究在两个溶解氧（DO）水平，0.3-0.5 和 0.7-0.9mg/L，重点是硝化性能。较高的 DO 水平诱导氨氮（NH3-N）完全硝化，实现化学需氧量和 NH3-N 去除率分别为 97%和 92%。在出水中始终存在明显更高的硝酸盐氮（NO3-N）和亚硝酸盐氮（NO2-N）水平，约 66%的新生成的氧化氮以 NO2-N 的形式存在。尽管硝化效率很高，但由于同时硝化-反硝化作用，只有约 23%的进水 NH3-N 最终转化为氧化氮。UMSB 中同时发生污泥毯的发展和颗粒化。
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