低溶氧下硝化生物膜中菌群的竞争增殖模型

A Surface Growth Competition Model of Microbial Species in Nitrifying Biofilm at Low Dissolved Oxygen

根据活性生物膜扩张原理，建立了硝化生物膜中微生物相互作用的非稳态解析数学模型，并可预测生物膜厚度的变化与微生物菌群的空间分布。模型很好地解释了硝化生物膜中氨氧化菌与亚硝酸氧化菌对空间和氧的竞争，以及它们在生物膜中的演变关系。

Based on the principle of active biofilm expansion ,a non-steady state analytic mathematical model of microbial interactions in nitrifying biofilm was developed.The model can predict biofilm thickness variation and space distribution of microbial species.It can also explain competitions for space and oxygen between ammonia-oxidizers and nitrite-oxidizers and their evolution in nitrifying biofilm.