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不同泥源对厌氧氨氧化反应器启动的影响

Keywords: 厌氧氨氧化,硝化污泥,启动,氮去除速率,影响

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Abstract:

采用2套上流式生物膜反应器,分别接种少量厌氧氨氧化污泥和大量硝化污泥,考察其对厌氧氨氧化反应器启动的影响。污泥接种入反应器后,测得接种厌氧氨氧化污泥的反应器(R1)内MLSS为0.22g/L,另一个反应器(R2)MLSS为2.7g/L。与直接接种厌氧氨氧化污泥相比,R1经过72d的运行才显现出厌氧氨氧化特性。经过114d的培养,前者氮去除速率由0.23kg/(m3?d)提升到5.29kg/(m3?d),总氮去除率大于89%;R2的氮去除速率由0.01kg/(m3?d)提升到1.1kg/(m3?d),总氮去除率大于84.6%。说明普通污泥启动需要一个较长的筛选过程,直接接种少量的厌氧氨氧化污泥比接种普通的污泥能够更快启动厌氧氨氧化反应器。

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