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武汉市污水厂污泥处理处置技术碳排放特征对比

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第41卷 期数: 2025年第10期 页码: 35-41 栏目: 出版日期: 2025-05-17
Title:
Comparison of Greenhouse Gas (GHG) Emission Characteristics of Sludge Treatment and Disposal Technologies of Wastewater Treatment Plants in Wuhan
作者:
贺珊珊1， 余鑫磊2， 陈红芳1， 宫铃3， 张碧波1， 魏晓蓓3， 邹磊1， 刘海燕1， 万年红1， 杨珊珊2
（1.中国市政工程中南设计研究总院有限公司，湖北 武汉 430010；2.哈尔滨工业大学 城市水资源与水环境国家重点实验室，黑龙江 哈尔滨 150009；3.武汉市城市排水发展有限公司，湖北 武汉 430070）
Author(s):
HE　Shan-shan1， YU　Xin-lei2， CHEN　Hong-fang1， GONG　Ling3， ZHANG　Bi-bo1， WEI　Xiao-bei3， ZOU　Lei1， LIU　Hai-yan1， WAN　Nian-hong1， YANG　Shan-shan2
（1. Central & Southern China Municipal Engineering Design and Research Institute Co. Ltd.， Wuhan 430010， China； 2. State Key Laboratory of Urban Water Resource and Environment， Harbin Institute of Technology， Harbin 150009， China； 3.Wuhan Urban Drainage Development Co. Ltd.， Wuhan 430070， China）
关键词:
污泥处理处置;  碳排放;  土地利用;  建材利用;  焚烧利用
Keywords:
sludge treatment and disposal;  GHG emissions;  land utilization;  building material utilization;  incineration utilization
摘要:
以武汉市污泥处理处置工程为基础，梳理了15条不同污泥处理处置路线（土地利用4条、建材利用6条、焚烧利用5条）的碳排放量。研究表明，土地利用碳排放量为366.6～629.5 kgCO2/tDS、焚烧利用为674.2～1 418.7 kgCO2/tDS、建材利用为906～2 724.9 kgCO2/tDS；土地利用技术路线中，采用离心脱水方式可使碳排放量降低102 kgCO2/tDS，约占净碳排放量的19.33%；建材利用技术路线中，采用板框脱水方式可使碳排放量降低974.5~1 772.3 kgCO2/tDS，占净碳排放量的101.8%~186.0%；焚烧利用技术路线中，采用板框脱水-热干化工艺可使碳排放量降低184.9 ~239.2 kgCO2/tDS，占净碳排放量的25.38%~35.48%。此外，研究还表明，土地利用方式中，肥料产品利用和厌氧消化环节的碳排放量分别占净碳排放量的32.18%~69.06%和107.80%；建材利用过程中，煅烧环节碳排放量占净碳排放量的60.99%~97.84%；焚烧利用方式中，板框脱水碳排放量占净碳排放量的50.71%~54.79%；这些环节碳排放量较高，是碳减排重点。
Abstract:
The greenhouse gas (GHG) emissions of 15 different sludge treatment and disposal pathways were summarized based on the sludge treatment and disposal projects in Wuhan, including 4 for landfill, 6 for building materials utilization, and 5 for incineration utilization. The GHG emissions of each technology pathway are as follows: 366.7-629.5 kgCO2/tDS for land utilization technical routes, 674.6-1 418.7 kgCO2/tDS for incineration utilization technical routes, 906-2 724.9 kgCO2/tDS for building material utilization technical routes. Using centrifugal dewatering can reduce 19.33% of net GHG emissions, which is equivalent to 102 kgCO2/tDS in land utilization technical routes. Frame dewatering can reduce 101.8%-186.0% of net GHG emissions, resulting in 974.5-1 772.3 kgCO2/tDS in building material utilization technical routes. Using frame dewatering and thermal drying can reduce 25.38%-35.48% of net GHG emissions, nearly 184.9-239.2 kgCO2/tDS in incineration technical routes. Moreover, the study results reveal that certain processes for sludge treatment and disposal contribute significantly to GHG emissions, including the utilization of fertilizer products and anaerobic digestion in the land utilization technical routes （contributing 32.18% to 69.06% and 107.80% of the net GHG emissions), the calcination stage in the building material utilization technical routes (contributing 60.99% to 97.84% of the net GHG emissions)， and frame dewatering in the incineration utilization technical routes (contributing 50.71% to 54.79% of the net GHG emissions). These are the key emission reduction links.

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更新日期/Last Update: 2025-05-17