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| 生物滤塔和NRB在有氧条件下去除废气中的NOx | |
| 引用本文： | 任晓莉,赵林,杨宝强,赵润柱.生物滤塔和NRB在有氧条件下去除废气中的NOx[J].环境工程学报,2011,5(2):391-394. |
| 作者姓名： | 任晓莉 赵林 杨宝强 赵润柱 |
| 作者单位： | 1. 天津大学环境科学与工程学院,天津,300072;太原工业学院环境与安全工程系,太原,030008 2. 天津大学环境科学与工程学院,天津,300072 3. 太原工业学院环境与安全工程系,太原,030008 |
| 基金项目： | 山西省工业科技攻关项目（20100321086） |
| 摘 要： | 研究了有氧条件下氮氧化物在生物滤塔内的传质机理,结果表明,当含NOx废气中氧气含量为20%、氧化度为80%时,被生物滤塔内微生物吸附分解的NOx仅占被净化的NOx的12%左右,而88%左右的NOx没有被微生物及时分解,而是转入液相中形成NO3-和NO2-.在此基础上,提出了采用生物滤塔和硝酸盐脱除反应器(nitrate... |
| 关 键 词： | 生物滤塔 硝酸盐脱除反应器 去除 氮氧化物 |
Removal of nitrogen oxides from waste gases by bio-filter and NRB under aerobic conditions |
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| Ren Xiaoli,Zhao Lin,Yang Baoqiang and Zhao Runzhu.Removal of nitrogen oxides from waste gases by bio-filter and NRB under aerobic conditions[J].Techniques and Equipment for Environmental Pollution Control,2011,5(2):391-394. | |
| Authors: | Ren Xiaoli Zhao Lin Yang Baoqiang and Zhao Runzhu |
| Institution: | 1. School of Environmental Science and Engineering, Tianjin University, Tianjin 300072,China; 2. Department of Environmental and Safety Engineering, Taiyuan Institute of Technology, Taiyuan 030008,China,1. School of Environmental Science and Engineering, Tianjin University, Tianjin 300072,China,2. Department of Environmental and Safety Engineering, Taiyuan Institute of Technology, Taiyuan 030008,China and 2. Department of Environmental and Safety Engineering, Taiyuan Institute of Technology, Taiyuan 030008,China |
| Abstract: | The mass transfer mechanism of nitrogen oxides under aerobic conditions in biofilter was studied. The results showed that when oxygen content was about 20% and oxidation rate was 80%, only about 12% of NOx which were removed by biofilter were absorbed and decomposed by microorganisms, and 88% of NOx were not timely decomposed by microorganisms, but transferred into liquid phase in the form of NO-2 and NO-3. On the basis of this, the integrated process of biofilter and NRB was put forward to remove NOx from exhaust gases under aerobic conditions, a series of experimental were carried out. The results showed that the removal efficiency of NOx achieved 90.23% for the inlet NOx concentration of 1 488.92 mg/m3 when the residence time was 9.42 s, and the concentration of NO-2and NO-3 at the outlet of NRB was less than 5 mg/m3. |
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