赵泽佳, 庹豪锐, 谢祥塔, 陈建, 韩松磊, 赵晓青, 刘学明. 采用改良A2O工艺中型城镇污水处理厂碳排放特征研究[J]. 华南师范大学学报(自然科学版), 2024, 56(1): 63-71. doi: 10.6054/j.jscnun.2024008
引用本文: 赵泽佳, 庹豪锐, 谢祥塔, 陈建, 韩松磊, 赵晓青, 刘学明. 采用改良A2O工艺中型城镇污水处理厂碳排放特征研究[J]. 华南师范大学学报(自然科学版), 2024, 56(1): 63-71. doi: 10.6054/j.jscnun.2024008
ZHAO Zejia, TUO Haorui, XIE Xiangta, CHEN Jian, HAN Songlei, ZHAO Xiaoqing, LIU Xueming. Research on Characteristics of Carbon Emissions in Medium-sized Urban Sewage Treatment Plants Using Improved A2O Processes[J]. Journal of South China Normal University (Natural Science Edition), 2024, 56(1): 63-71. doi: 10.6054/j.jscnun.2024008
Citation: ZHAO Zejia, TUO Haorui, XIE Xiangta, CHEN Jian, HAN Songlei, ZHAO Xiaoqing, LIU Xueming. Research on Characteristics of Carbon Emissions in Medium-sized Urban Sewage Treatment Plants Using Improved A2O Processes[J]. Journal of South China Normal University (Natural Science Edition), 2024, 56(1): 63-71. doi: 10.6054/j.jscnun.2024008

采用改良A2O工艺中型城镇污水处理厂碳排放特征研究

Research on Characteristics of Carbon Emissions in Medium-sized Urban Sewage Treatment Plants Using Improved A2O Processes

  • 摘要: 运用碳排放因子法,对汕头市4座处理规模相似但A2O工艺各异的中型污水处理厂进行碳排放总量核算与碳排放强度分析。结果表明,采用不同A2O工艺的污水处理厂总碳排放量存在差异,4座污水处理厂总碳排放强度范围为0.317~0.402 kg/m3(CO2-eq)。按处理工艺碳排放从小到大顺序为:多段AO、A2O+厌氧/缺氧调节池、传统A2O、A2O+微曝气氧化沟。但不同处理工艺的碳排放类别组成相似,电力消耗为最主要的碳排放源。与传统的A2O工艺相比,3种改良A2O工艺在减小药耗、CH4排放、N2O排放和污泥处置碳排放源排放强度存在优势,其中多段AO工艺减小总碳排强度的优势最大,据此针对改良A2O工艺的运行碳排优化提出建议。

     

    Abstract: The carbon-emission-factor approach was used to conduct the total carbon emissions and carbon emission intensity of 4 medium-sized sewage treatment plants with similar scale but different A2O processes in Shantou. The results show that the total carbon emissions with different A2O processes are different. The total carbon emission intensity of the 4 sewage treatment plants ranged from 0.317 to 0.402 kg/m3(CO2-eq). The carbon emissions in order from smallest to largest based on the processing are: multi-stage AO, A2O+anaerobic/hypoxia regulating tank, traditional A2O, A2O+micro-aeration oxidation ditch. However, the carbon emission categories of different processes are similar, and electricity consumption is the most important carbon emission source for each process. Compared with the traditional A2O process, the other three improved A2O processes have advantages in reducing carbon emission intensity of chemicals consumption, CH4 emission, N2O emission and sludge disposal. And the multi-stage AO process shows the greatest ability to reduce the total carbon intensity. Based on the above results, some suggestions for the carbon emission optimization of the improved A2O processes were put forward.

     

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