卢骏营
（上海市政工程设计研究总院<集团>有限公司）
[1]卢骏营.城镇污水厂污泥脱水干化焚烧工艺全流程碳排放研究[J].中国给水排水,2025,41(24):52-55.
LUJun-ying.Research on Carbon Emissions of Sludge Dewatering Drying and Incineration Process of Municipal Sewage Treatment Plant[J].China Water & Wastewater,2025,41(24):52-55.
城镇污水厂污泥脱水干化焚烧工艺全流程碳排放研究
- Title:
- Research on Carbon Emissions of Sludge Dewatering Drying and Incineration Process of Municipal Sewage Treatment Plant
- 作者:
- 卢骏营
- （上海市政工程设计研究总院<集团>有限公司，上海 200092）
- Author(s):
- LU Jun-ying
- （Shanghai Municipal Engineering Design Institute
Co. Ltd.， Shanghai 200092， China）
- Keywords:
- sludge treatment; carbon emissions; water content of sludge; sludge dewatering and drying; sludge incineration
- 摘要:
- 以南方某城市污水处理厂污泥处理处置为例，从污水处理厂浓缩后污泥开始，研究厂内脱水干化+异地集中焚烧（出厂污泥含水率为40%）、厂内深度脱水+异地集中焚烧（出厂污泥含水率为60%）、厂内常规脱水+异地干化/焚烧工艺（出厂污泥含水率为80%）的碳排放情况。结果表明，基于该城市泥质特点，污水处理厂出厂污泥含水率越低，污泥干化焚烧工艺的计算碳排放量越低。当出厂污泥含水率分别为40%和60%时，电耗碳排放量占比最大，分别占总碳排放量的31%和27%。当污水处理厂出泥含水率为80%时，外加燃料带来的碳排放约占全流程的43%。因此，污泥处理处置中应尽量采用高效节能的设备，减少处理程中的药剂添加，处理过程减少天然气等能源的使用，尽可能采用废热蒸汽、生物质等热源。
- Abstract:
- Taking a city in southern China as a case study, this research examines the carbon emissions of different sludge treatment scenarios, starting from the thickened sludge at the wastewater treatment plant. The three scenarios analyzed are: on-site dewatering and drying + off-site centralized incineration (with sludge moisture content of 40% upon leaving the wastewater treatment plant), on-site deep dewatering + off-site centralized incineration (with sludge moisture content of 60% upon leaving the wastewater treatment plant), and on-site conventional dewatering + off-site drying/incineration (with sludge moisture content of 80% upon leaving the wastewater treatment plant). The result shows that lower water content in the sludge discharged from the WWTP leads to lower calculated carbon emissions. When the water content of sludge is 40% and 60%, the carbon emission of electricity usage accounts for the largest proportion of total carbon emissions, accounting for 31% and 27%, respectively. However, when the water content of sludge is 80%, the carbon emissions from additional fuel usage contributes to approximately 43% of the total carbon emissions. Therefore, to reduce carbon emissions in the sludge treatment and disposal process, it is recommended to utilize energy-efficient equipment, minimize chemical additives, reduce reliance on natural gas and other energy sources, and maximize the utilization of incorporate waste heat steam, biomass, and other sustainable heat sources.
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