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高速泳动床对村镇微污染水体的预处理效果

Keywords: 高速泳动床,微污染水体,预处理效果,硝化作用

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Abstract:

利用高速泳动床反应器作为预处理装置处理村镇微污染水体,出水进入组合人工湿地。结果表明,实验阶段高速泳动床在HRT为1.2h时,尽管泳动床进水各污染物浓度较低,但反应器对COD、TN和TP仍具有较明显(P<0.05)的去除效果,平均去除率分别为11.3%、14.6%和25.8%。高速泳动床反应器对氨氮去除效果尤为明显,去除率达到46.9%。此外,高速泳动床反应器内硝化作用较强,出水中硝态氮含量平均增加率为45.5%,弥补了后续人工湿地硝化作用不强、除氨氮效果不佳的缺点。

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