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好氧氨氧化菌混培物的氨氧化动力学研究

Keywords: 好氧氨氧化菌,氨氧化,动力学

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Abstract:

采用批式呼吸法求得好氧氨氧化菌产率系数为0.2119mgCOD/mgNH+4-NOD(或者0.7268mgCOD/mgNH+4-N)和氨氧化菌最大氨氮降解速率为0.1mgNOD/(mgCOD·h)(或者0.0292mgN/(mgCOD·h))。用间歇式批试验法,加入24μmol/LNaN3抑制NO-2-N氧化,建立氨氧化反应动力学方程,得到氨氮半饱和系数为18.38mgNOD/L(或者5.36mgNH+4-N/L),DO半饱和系数为0.494mg/L。对比参数值表明,用一步硝化动力学来描述氨氧化反应动力学模型是错误的。

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