| 温度对污水脱氮系统污染物去除效果及氧化亚氮释放的影响 |
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| 引用本文： | 张婷婷,张建,杨芳,谢慧君,胡振,李一冉. 温度对污水脱氮系统污染物去除效果及氧化亚氮释放的影响[J]. 环境科学, 2012, 33(4): 1283-1287 |
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| 作者姓名： | 张婷婷 张建 杨芳 谢慧君 胡振 李一冉 |
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| 作者单位： | 山东大学环境科学与工程学院,济南 250100;山东大学环境科学与工程学院,济南 250100;微山县环境保护局,济宁 277600;山东大学环境研究院,济南 250100;山东大学环境科学与工程学院,济南 250100;山东大学环境科学与工程学院,济南 250100 |
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| 基金项目： | 国家水体污染控制与治理科技重大专项(2009ZX07210-009-04); 山东大学自主创新基金杰青培育项目(2009JQ009) |
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| 摘 要： | 污水生物脱氮过程是大气中的氧化亚氮(N2O)的一个重要来源.以anoxic-oxic sequencing batch reactors(A/O SBRs)工艺为研究对象,考察了5组不同温度(10、20、25、30、35℃)条件下系统的污染物去除效果和氧化亚氮释放情况.结果表明,温度对COD的去除无显著影响,但对氮素的去除有明显影响:在一定范围内,随温度的升高氮的去除率升高,但温度超过25℃后,随着温度的上升氮的去除效果下降;温度对氧化亚氮的释放量有重要影响,随温度的升高氧化亚氮的释放量逐渐降低[释放量(以MLSS计)依次为:530.1、260.8、218.3、104.7、57.7μg.g-1].对于A/O SBRs工艺,氧化亚氮的释放主要集中的好氧段,缺氧段几乎无氧化亚氮释放.
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| 关 键 词： | 温度 氧化亚氮 污水生物脱氮 硝化反硝化 anoxic-oxic sequencing batch reactors(A/O SBRs) |
| 收稿时间： | 2011-06-13 |
| 修稿时间： | 2011-08-01 |
Effect of Temperature on Pollutant Removal and Nitrous Oxide Emission of Wastewater Nitrogen Removal System |
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| ZHANG Ting-ting,ZHANG Jian,YANG Fang,XIE Hui-jun,HU Zhen and LI Yi-ran. Effect of Temperature on Pollutant Removal and Nitrous Oxide Emission of Wastewater Nitrogen Removal System[J]. Chinese Journal of Environmental Science, 2012, 33(4): 1283-1287 |
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| Authors: | ZHANG Ting-ting ZHANG Jian YANG Fang XIE Hui-jun HU Zhen LI Yi-ran |
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| Affiliation: | School of Environmental Science and Engineering, Shandong University, Ji'nan 250100, China;School of Environmental Science and Engineering, Shandong University, Ji'nan 250100, China;Weishan Environmental Protection Agency, Jining 277600, China;Environmental Research Center, Shandong University, Ji'nan 250100, 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 |
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| Abstract: | Biological nitrogen removal system is a significant source of nitrous oxide (N2O). The effect of temperature (10, 20, 25, 30, 35 degrees C) on the pollutant removal efficiencies and N2O emission characteristics of lab-scale A/O SBRs wastewater treatment process was evaluated. Results showed that temperature have no significant effect on the removal of COD while have a significant effect on the removal of nitrogen. During a certain range, as the temperature increasing the nitrogen removal rate increased. The nitrogen removal increased with the increase of temperature when it was below 25 degrees C and decreased with the increase of temperature when it was above 25 degrees C. Significant impact of temperature on the N2O emission was also observed. N2O emission decreased with the increase of temperature (N2O emission: 530.1, 260.8, 218.3, 104.7, 57.7 microg x g(-1)). For a lab-scale A/O SBRs treating wastewater, most of the N2O was produced during the aerobic phase, while no significant N2O emission can be detected during the oxide phase. |
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| Keywords: | temperature nitrous oxide biological nitrogen removal nitrification and denitrification anoxic-oxic sequencing batch reactors (A/O SBRs) |
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