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低温下生物膜流化床工艺硝化反应动力学研究

Keywords: 生物膜流化床,悬浮填料,硝化反应

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Abstract:

采用生物膜流化床工艺对中部某城镇污水处理厂进行提标改造,在冬季水温低于14℃时进行中试研究。取好氧池1和2中的部分填料经小试实验对其中的硝化反应动力学分析,得出填料上相应生物膜硝化反应速率表达式。并通过物料衡算计算出两级生物膜流化床反应器硝化反应动力学模型,经过实际中试实验,测得实际值与计算值相关性较好,其相对误差在15%以下。应用模型在单个反应器为完全混合、整体为推流模式的多级生物膜流化床工艺,得出NH4+-N出水浓度计算表达式。

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