[1]熊鹏宇,钱晓雍,王丽花,等.全覆盖污水处理厂N2O排放实测及本地化因子测算[J].中国给水排水,2024,40(15):28-35.
　XIONGPeng-yu,QIANXiao-yong,WANGLi-hua,et al.Measurement of Nitrous Oxide Emission and Localization Factor Determination in a Fully Covered Wastewater Treatment Plant[J].China Water & Wastewater,2024,40(15):28-35.
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全覆盖污水处理厂N2O排放实测及本地化因子测算

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第40卷 期数: 2024年第15期 页码: 28-35 栏目: 出版日期: 2024-08-01
Title:
Measurement of Nitrous Oxide Emission and Localization Factor Determination in a Fully Covered Wastewater Treatment Plant
作者:
熊鹏宇1,2， 钱晓雍2， 王丽花3， 万春黎1， 林冰洁3， 汪吉祥2， 吕燕3， 李政文2， 刘翔1
（1.复旦大学 环境科学与工程系，上海 200433；2.上海市环境科学研究院，上海 200233；3.上海城投污水处理有限公司，上海 201203）
Author(s):
XIONG　Peng-yu1，2， QIAN　Xiao-yong2， WANG　Li-hua3， WAN　Chun-li1， LIN　Bing-jie3， WANG　Ji-xiang2， Lü　Yan3， LI　Zheng-wen2， LIU　Xiang1
（1. Department of Environmental Science and Engineering， Fudan University， Shanghai 200433， China； 2. Shanghai Academy of Environmental Sciences， Shanghai 200233， China； 3. Shanghai Chengtou Wastewater Treatment Group Co. Ltd.， Shanghai 201203， China）
关键词:
全覆盖污水处理厂;  N2O排放因子;  本地化;  UNITANK工艺
Keywords:
fully covered wastewater treatment plant;  N2O emission factor;  localization;  UNITANK process
摘要:
准确核算氧化亚氮（N2O）排放量是碳减排研究的重要基础。为此，选取上海市采用UNITANK工艺的某全覆盖污水处理厂为研究对象，对4个污水处理单元（进水泵房、沉砂池、调蓄池和生物反应池）的N2O排放量进行了长期监测和全面评估。结果表明，污水脱氮过程是污水处理厂中N2O排放的主要来源（92.94%），排放量均值为0.13 g/m3；UNITANK工艺全年不间断排放N2O。在季节性尺度上，相关性分析显示，N2O排放量与水温、进水总氮浓度和总氮去除率相关。N2O排放量在日变化上可能受到水温及进水水质的影响，其与水温及进水总氮浓度同步达到峰值。经计算，UNITANK工艺的本地化N2O排放因子（EFN2O）为0.07%~0.425%，显著低于联合国政府间气候变化专门委员会（IPCC）提出的EFN2O默认值（1.6%）。本地化EFN2O的提出，可为准确核算上海市及周边地区污水处理厂的N2O排放量提供参考。
Abstract:
Accurate quantification of nitrous oxide (N2O) emission is a crucial foundation for research on carbon reduction. Therefore, a fully covered wastewater treatment plant utilizing the UNITANK process in Shanghai was chosen as the study subject for conducting long-term monitoring and comprehensive assessment of N2O emission from four treatment units (inlet pumping station, grit chamber, storage tank, and bioreactor). The nitrogen removal process accounted for 92.94% of N2O emission in the wastewater treatment plant, with an average emission of 0.13 g/m3. The UNITANK process exhibited continuous N2O emissions throughout the year. For seasonal variation, the correlation analysis revealed that N2O emission was associated with water temperature, influent total nitrogen, and total nitrogen removal rate. The diurnal variation of N2O emission might be influenced by water temperature and influent quality, and its peak value was synchronized with water temperature and total nitrogen concentration.The localization factor (EFN2O) for the UNITANK process was calculated to range from 0.07% to 0.425%, which was significantly lower than the default EFN2O value (1.6%) proposed by the Intergovernmental Panel on Climate Change (IPCC). The localization of EFN2O can provide reference for the accurate calculation of N2O emission of wastewater treatment plants in Shanghai and surrounding areas.
更新日期/Last Update: 2024-08-01