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| Fe3+对同步硝化反硝化过程氮元素迁移转化及N2O释放的影响 | |
| 引用本文： | 李浩,闫玉洁,谢慧君,贾文林,胡振,张建.Fe3+对同步硝化反硝化过程氮元素迁移转化及N2O释放的影响[J].环境科学,2015,36(4):1392-1398. |
| 作者姓名： | 李浩 闫玉洁 谢慧君 贾文林 胡振 张建 |
| 作者单位： | 1. 山东大学环境科学与工程学院,济南,250100 2. 山东省环境保护科学研究设计院,济南,250013 3. 山东大学环境研究院,济南,250100 4. 江苏师范大学化学化工学院,徐州,221116 |
| 基金项目： | 国家自然科学基金项目(21177075); 山东大学基本科研业务费专项(2014TB003) |
| 摘 要： | 采用SBR反应器,研究了不同浓度的Fe3+对同步硝化反硝化(simultaneous nitrification denitrification,SND)过程中氮元素迁移转化去除和N2O释放的影响.结果表明,在同步硝化反硝化过程中,系统中Fe3+浓度为20 mg·L-1时可以提高系统对氮的去除率,而60 mg·L-1的Fe3+则会对其产生抑制效果.并且,高浓度的Fe3+会刺激SND过程中N2O的释放,N2O转化率也有所提高.这主要是因为:1高浓度的Fe3+会导致污泥脱氢酶活性降低,使得NO-2在好氧阶段大量累积;2高浓度的Fe3+减少了SND过程前置厌氧阶段胞内聚合物(polyhydroxybutyrate,PHB)的含量,使得后续反硝化过程碳源减少.Fe3+对SND过程中总磷的去除有促进作用,并且Fe3+浓度越高,总磷去除率越高,这主要是因为Fe3+的存在使系统中发生了化学除磷作用. |
| 关 键 词： | 同步硝化反硝化(SND) 氮元素迁移转化 N2O Fe3+ 温室气体 |
| 收稿时间： | 2014/12/9 0:00:00 |
| 修稿时间： | 1/6/2015 12:00:00 AM |
Effect of Ferric Iron on Nitrogen Immigration and Transformation and Nitrous Oxide Emission During Simultaneous Nitrification Denitrification Process |
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| LI Hao,YAN Yu-jie,XIE Hui-jun,JIA Wen-lin,HU Zhen and ZHANG Jian.Effect of Ferric Iron on Nitrogen Immigration and Transformation and Nitrous Oxide Emission During Simultaneous Nitrification Denitrification Process[J].Chinese Journal of Environmental Science,2015,36(4):1392-1398. | |
| Authors: | LI Hao YAN Yu-jie XIE Hui-jun JIA Wen-lin HU Zhen and ZHANG Jian |
| Institution: | School of Environmental Science and Engineering, Shandong University, Ji'nan 250100, China;Shandong Academy of Environmental Science, Ji'nan 250013, China;Institute of Environment Research, Shandong University, Ji'nan 250100, China;School of Chemistry and Chemical Engineering, Jiangsu Normal University, Xuzhou 221116, China;School of Environmental Science and Engineering, Shandong University, Ji'nan 250100, China;School of Environmental Science and Engineering, Shandong University, Ji'nan 250100, China |
| Abstract: | |
| Keywords: | simultaneous nitrification and denitrification(SND) nitrogen immigration and transformation N2O Fe(Ⅲ) greenhouse gases |
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