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
赵泽佳 1庹豪锐 2谢祥塔 2陈建 3韩松磊 3赵晓青 4刘学明2
作者信息
- 1. 华南理工大学环境与能源学院,工业聚集区污染控制与生态修复教育部重点实验室/广东省固废污染控制与资源化重点实验室,广州 510006;汕头市住房和城乡建设局,汕头 515041
- 2. 华南理工大学环境与能源学院,工业聚集区污染控制与生态修复教育部重点实验室/广东省固废污染控制与资源化重点实验室,广州 510006
- 3. 上海市政工程设计研究总院(集团)有限公司,上海 200082
- 4. 汕头市住房和城乡建设局,汕头 515041
- 折叠
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 emis-sion 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 or-der 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 proces-ses are similar,and electricity consumption is the most important carbon emission source for each process.Com-pared 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.
关键词
污水处理厂/A2O/碳排放Key words
sewage treatment plants/A2O/carbon emission引用本文复制引用
基金项目
国家重点研发计划项目(2019YFA0210404)
国家自然科学基金青年基金项目(22006040)
高校教师特色创新研究项目(2022XJZZ02)
汕头市国家海绵城市建设示范城市技术服务项目(GDJC220116)
出版年
2024
NETL
NSTL
万方数据