污水生物脱氮过程硝化阶段N_2O动力学模型  

N_2O dynamics model during nitrification phase in wastewater biological treatment process

作　　者：刘玉田[1] 张守彬[1] 邱立平[1] 张媛媛[1] 

机构地区：[1]济南大学土木建筑学院,济南250022

出　　处：《环境工程学报》2017年第8期4601-4608,共8页Chinese Journal of Environmental Engineering

基　　金：山东省自然科学基金资助项目(ZR2015EM021);国家自然科学基金资助项目(51278225)

摘　　要：通过耦合导致N_2O产生的亚硝酰基(NOH)化学分解和氨氧化细菌(AOB)反硝化途径,构建了一种包含10个组分和7个生化过程的硝化阶段N_2O动力学模型。与此同时,利用MATLAB和Excel软件工具,完成了对所有动力学参数的相对灵敏度分析,并在此前提下实现了对模型关键参数的拟合,完成了对模型的模拟与验证过程,进而确定了一种不同于已有活性污泥模型计算软件的模型计算方法。并且通过对模型数据和实验数据之间相关系数(R^2)的考察,证明本模型不仅对硝化阶段含氮组分具有良好的模拟效果,同时也与机理研究相符。In this work,a N2O dynamics model was developed for coupling nitrosyl radical（ NOH） chemical decomposition with ammonia-oxidizing bacteria（ AOB） denitrification pathways for N2O production during nitrification phase. The model contains ten compounds and seven biological processes. The relative sensitivity analyses of all the kinetic parameters in the model were completed using MATLAB and Excel software tools. Using these conditions,we fitted the key parameters; then completed the simulation and validation processes of the model. In the end,a new method of calculation was established for use in an activated sludge model,which is different from other calculation software. Based on the coefficient of correlation between simulated and experimental data,it was demonstrated that the model not only is quite effective for simulation of nitrification during the process of wastewater biological treatment,but also conforms to the known mechanics.

关 键 词：污水生物脱氮 氧化亚氮 动力学模型 硝化阶段 

分 类 号：X703.1[环境科学与工程—环境工程]