好氧反硝化去除低浓度NOx的动力学模型研究

环境工程学报

好氧反硝化去除低浓度NOx的动力学模型研究

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卢乐, 黄少斌. 好氧反硝化去除低浓度NOx的动力学模型研究[J]. 环境工程学报, 2011, 5(5): 1124-1128.

引用本文:

卢乐, 黄少斌. 好氧反硝化去除低浓度NOx的动力学模型研究[J]. 环境工程学报, 2011, 5(5): 1124-1128.

Lu Le, Huang Shaobin. Dynamic modeling of removal of low-concentration NOx by aerobic denitrification[J]. Chinese Journal of Environmental Engineering, 2011, 5(5): 1124-1128.

Citation:

Lu Le, Huang Shaobin. Dynamic modeling of removal of low-concentration NOx by aerobic denitrification[J]. Chinese Journal of Environmental Engineering, 2011, 5(5): 1124-1128.

好氧反硝化去除低浓度NOx的动力学模型研究

卢乐¹,
黄少斌¹

1.
华南理工大学环境科学与工程学院，广州 510006
基金项目:
国家自然科学基金资助项目(20777019)

广东省经济和信息化委员会项目（20100106-3）

广东省科技厅项目（2009B050900005）
中图分类号: X701

Dynamic modeling of removal of low-concentration NOx by aerobic denitrification

Lu Le¹,
Huang Shaobin¹

1.
College of Environmental Science & Engineering， South China University of Technology， Guangzhou 510006， China
Fund Project:

摘要: 在好氧条件下，对利用生物滴滤塔（bio-trickling filter，BTF）反硝化净化废气中NOx的过程进行了理论模型探讨，并用实验结果进行了验证。在分析NOx在BTF内传质以及生物降解过程的基础上，建立了NOx在气相和生物膜相的质量守恒方程，结合Fick定律和好氧条件下的Monod微生物反应动力学方程，最终得到了NOx在BTF中“吸附-微生物降解”过程的动力学方程。模型计算值与实验结果表明，BTF中好氧反硝化过程为一级反应过程，利用该模型可以较好地模拟进口浓度、停留时间等因素对出口浓度的影响，对实际应用具有指导意义。
- 生物滴滤塔 /
- 好氧反硝化 /
- NOx /
- 停留时间
Abstract: Based on the analysis of mass transfer biodegradation process of NOx in the bio-trickling filter (BTF)，the mass conservation equations of NOx in gas phase and biofilm phase were constituted. According to the Fick law and the Monod kinetic equation of bioreaction under aerobic condition， the equations of NOx mass transfer biodegradation process in BTF were obtained. In order to simulate the denitrifying process of NO by using BTF under aerobic conditions，a dynamic model of denitrifying removal of NO in BTF was established， and experiments for verifying the validity of the model proposed were conducted. The results show that the process of aerobic denitrification in BTF is a first-order dynamics reaction， which indicates that the proposed model can well describe the removal process of low-concentration NOx in BTF， and the model can simulate the effect of inlet NOx concentration and empty bed residence time (EBRT) on NOx outlet concentration.
- BTF /
- aerobic denitrification /
- NOx /
- EBRT

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卢乐, 黄少斌. 好氧反硝化去除低浓度NOx的动力学模型研究[J]. 环境工程学报, 2011, 5(5): 1124-1128.

引用本文:

卢乐, 黄少斌. 好氧反硝化去除低浓度NOx的动力学模型研究[J]. 环境工程学报, 2011, 5(5): 1124-1128.

Lu Le, Huang Shaobin. Dynamic modeling of removal of low-concentration NOx by aerobic denitrification[J]. Chinese Journal of Environmental Engineering, 2011, 5(5): 1124-1128.

Citation:

Lu Le, Huang Shaobin. Dynamic modeling of removal of low-concentration NOx by aerobic denitrification[J]. Chinese Journal of Environmental Engineering, 2011, 5(5): 1124-1128.

好氧反硝化去除低浓度NOx的动力学模型研究

卢乐¹,
黄少斌¹

1. 华南理工大学环境科学与工程学院，广州 510006

收稿日期: 2010-05-18

基金项目:

国家自然科学基金资助项目(20777019)

广东省经济和信息化委员会项目（20100106-3）

广东省科技厅项目（2009B050900005）

关键词:

摘要: 在好氧条件下，对利用生物滴滤塔（bio-trickling filter，BTF）反硝化净化废气中NOx的过程进行了理论模型探讨，并用实验结果进行了验证。在分析NOx在BTF内传质以及生物降解过程的基础上，建立了NOx在气相和生物膜相的质量守恒方程，结合Fick定律和好氧条件下的Monod微生物反应动力学方程，最终得到了NOx在BTF中“吸附-微生物降解”过程的动力学方程。模型计算值与实验结果表明，BTF中好氧反硝化过程为一级反应过程，利用该模型可以较好地模拟进口浓度、停留时间等因素对出口浓度的影响，对实际应用具有指导意义。

English Abstract

Dynamic modeling of removal of low-concentration NOx by aerobic denitrification

Lu Le¹,
Huang Shaobin¹

1. College of Environmental Science & Engineering， South China University of Technology， Guangzhou 510006， China

Received Date: 2010-05-18

Fund Project:

Keywords:

BTF /
aerobic denitrification /
NOx /
EBRT

Abstract: Based on the analysis of mass transfer biodegradation process of NOx in the bio-trickling filter (BTF)，the mass conservation equations of NOx in gas phase and biofilm phase were constituted. According to the Fick law and the Monod kinetic equation of bioreaction under aerobic condition， the equations of NOx mass transfer biodegradation process in BTF were obtained. In order to simulate the denitrifying process of NO by using BTF under aerobic conditions，a dynamic model of denitrifying removal of NO in BTF was established， and experiments for verifying the validity of the model proposed were conducted. The results show that the process of aerobic denitrification in BTF is a first-order dynamics reaction， which indicates that the proposed model can well describe the removal process of low-concentration NOx in BTF， and the model can simulate the effect of inlet NOx concentration and empty bed residence time (EBRT) on NOx outlet concentration.

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