泥处理处置路径碳排放分析

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摘要根据联合国政府间气候变化专门委员会(IPCC)提供的核算准则,结合生命周期评价(LCA),对我国常见的污泥处理处置路径包括填埋、焚烧、热解、好氧堆肥、厌氧消化和湿式空气氧化进行了碳排放核算,并对敏感因子污泥有机质含量进行了影响分析.结果表明,对于有机质含量40%~50%的脱水污泥(含水率80%),净碳排放排序为填埋>焚烧>热解>厌氧消化>好氧堆肥>湿式空气氧化;而对于有机质含量60%~70%的脱水污泥,排序为填埋>焚烧>热解>好氧堆肥>湿式空气氧化>厌氧消化.对不同污泥处理处置组合路径进一步分析表明,独立焚烧相对于污泥水泥窑协同处置和燃煤电厂混烧碳排放更低.水解-厌氧消化-土地利用组合路径因提高有机质利用率而降低碳排放.1t脱水污泥处理处置全生命周期碳排放分析的结果表明,当污泥有机质含量低于60%时,上述路径都会产生2.07~494.45kg CO₂eq/t不等的碳排放;当污泥有机质含量达到60%时,热水解-厌氧消化-土地利用组合路径可以实现负碳排放,为-37.91kg CO₂eq/t,厌氧消化及湿式空气氧化路径接近于零碳排放;当有机质含量达到70%时,湿式空气氧化､厌氧消化及组合路径均可以实现负碳排放.

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	王琳
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关键词 ：污泥处理处置, 碳排放, 生命周期评价, 有机质含量

Abstract：Carbon emission from sludge landfill, incineration, pyrolysis, aerobic composting, anaerobic digestion, and wet air oxidation in China were calculated referring to the guideline provided by Intergovernmental Panel on Climate Change (IPCC) and life cycle analysis (LCA) method. In addition, sludge organic content was discuss as a key sensitive impact factor of carbon emission. The results show that for dewatered sludge with organic content of 40%~50% and water content of 80%, the sequence of the total carbon emission from sludge treatment is: landfill > incineration > pyrolysis > anaerobic digestion > aerobic composting > wet air oxidation. While sludge organic content is 60%~70%, the sequence changes to: landfill > incineration > pyrolysis > aerobic composting > wet air oxidation > anaerobic digestion. A further analysis on different integration routes indicates that sludge incineration has lower carbon emission than co-processing in cement kilns or co-combustion in coal-fired power plants. The integration of thermal pretreatment, anaerobic digestion and land use can reduce carbon emission due to improved organic content utilization. A LCA analysis on carbon emission from 1t dewatered sludge treatment demonstrates that all the sludge treatment routes release 2.07~494.45kg CO₂eq/t when sludge organic content is lower than 60%. When sludge organic content reaches 60%, the integration of thermal hydrolysis, anaerobic digestion, and land use achieved a negative carbon emission of -37.91kg CO₂eq/t, and anaerobic digestion and wet air oxidation realize almost zero carbon emission. When sludge organic content reaches 70%, wet air oxidation, anaerobic digestion and its combination routes can cause negative carbon emission.

Key words： sludge treatment carbon emission life cycle analysis organic matter content

收稿日期: 2021-10-18

PACS:

X705

基金资助:深圳市可持续发展科技专项(KCXFZ202002011008-44824)

通讯作者: 李欢,副教授,li.huan@sz.tsinghua.edu.cn E-mail: li.huan@sz.tsinghua.edu.cn

作者简介: 王琳(1999-),女,广东梅州人,清华大学硕士研究生,主要从事固体废弃物控制及资源化利用研究.

引用本文:

王琳, 李德彬, 刘子为, 李欢. 泥处理处置路径碳排放分析[J]. 中国环境科学, 2022, 42(5): 2404-2412. WANG Lin, LI De-bin, LIU Zi-wei, LI Huan. Analysis on carbon emission from sludge treatment and disposal. CHINA ENVIRONMENTAL SCIENCECE, 2022, 42(5): 2404-2412.

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http://www.zghjkx.com.cn/CN/ 或 http://www.zghjkx.com.cn/CN/Y2022/V42/I5/2404

[1]	中华人民共和国住房和城乡建设部.中国城市建设统计年鉴 [Z]. 2020. Ministry of Housing and Urban-Rural Development, P.R.CHINA. China urban construction statistical yearbook [Z]. 2020.
[2]	Li H, Feng K. Life cycle assessment of the environmental impacts and energy efficiency of an integration of sludge anaerobic digestion and pyrolysis [J]. Journal of Cleaner Production, 2018,195:476-485.
[3]	Mayer F, Bhandari R, Gäth S A. Life cycle assessment of prospective sewage sludge treatment paths in Germany [J]. Journal of Environmental Management, 2021,290:112557.
[4]	Buonocore E, Mellino S, De Angelis G, et al. Life cycle assessment indicators of urban wastewater and sewage sludge treatment [J]. Ecological Indicators, 2018,94:13-23.
[5]	Li H, Jin C, Mundree S. Hybrid environmental and economic assessment of four approaches recovering energy from sludge with variant organic contents [J]. Journal of Cleaner Production, 2017,153: 131-138.
[6]	Marazza D, Macrelli S, D'angeli M, et al.Greenhouse gas savings and energy balance of sewage sludge treated through an enhanced intermediate pyrolysis screw reactor combined with a reforming process [J]. Waste Management, 2019,91:42-53.
[7]	Cao Y, Pawlowski A.Life cycle assessment of two emerging sewage sludge-to-energy systems: evaluating energy and greenhouse gas emissions implications [J]. Bioresour Technology, 2013,127:81-91.
[8]	Piippo S, Lauronen M, Postila H. Greenhouse gas emissions from different sewage sludge treatment methods in north [J]. Journal of Cleaner Production, 2018,177:483-492.
[9]	林文聪,赵刚,刘伟,等.污水厂污泥典型处理处置工艺碳排放核算研究 [J]. 环境工程, 2017,35(7):175-179. Lin W C, Zhao G, Liu W, et al. Study on carbon emission accounting for typical processes of sewage sludge treatment and disposal [J]. Environmental Engineering, 2017,35(7):175-179.
[10]	Li H, Jin C, Zhang Z, et al. Environmental and economic life cycle assessment of energy recovery from sewage sludge through different anaerobic digestion pathways [J]. Energy, 2017,126:649-657.
[11]	郝晓地,陈奇,李季,等.污泥干化焚烧乃污泥处理/处置终极方式 [J]. 中国给水排水, 2019,35(4):35-42. Hao X D, Chen Q, Li J, et al. Ultimate approach to handle excess sludge: incineration and drying [J]. China Water & Wastewater, 2019,35(4):35-42.
[12]	Mills N, Pearce P, Farrow J, et al. Environmental & economic life cycle assessment of current & future sewage sludge to energy technologies [J]. Waste Management, 2014,34(1):185-195.
[13]	Tauber J, Parravicini V, Svardal K, et al. Quantifying methane emissions from anaerobic digesters [J]. Water Science and Technology, 2019,80(9):1654-1661.
[14]	中华人民共和国生态环境部.城镇污水处理厂污泥处理处置污染防治最佳可行技术指南 [Z]. 2010. Ministry of Housing and Urban-Rural Development, P.R.CHINA. Guideline on best available technologies of pollution prevention and control for treatment and disposal of sludge from municipal wastewater trearment plant [Z]. 2010.
[15]	刘洪涛,郑海霞,陈俊,等.城镇污水处理厂污泥处理处置工艺生命周期评价 [J]. 中国给水排水, 2013,29(6):11-13. Liu H T, Zheng H X, Chen J, et al. Life cycle assessment of sewage sludge treatment of disposal technologies [J]. China Water & Wastewater, 2013,29(6):11-13.
[16]	中华人民共和国住房和城乡建设部.城镇污水处理厂污泥处理处置技术指南 [Z]. 2011. Ministry of Housing and Urban-Rural Development, P.R.CHINA. Guideline on sludge treatment and disposal from municipal sewage treatment plant [Z]. 2011.
[17]	Li S, Li Y, Lu Q, et al.Integrated drying and incineration of wet sewage sludge in combined bubbling and circulating fluidized bed units [J]. Waste Management, 2014,34(12):2561-2566.
[18]	Liu B, Wei Q, Zhang B, et al. Life cycle GHG emissions of sewage sludge treatment and disposal options in Tai Lake Watershed, China [J]. Sci Total Environ, 2013,447:361-369.
[19]	Chen Y C, Kuo J. Potential of greenhouse gas emissions from sewage sludge management: a case study of Taiwan [J]. Journal of Cleaner Production, 2016,129:196-201.
[20]	GB21258-2017 常规燃煤发电机组单位产品能源消耗限额 [S]. GB21258-2017 The norm of energy consumption per unit product of general coal-fired power set [S].
[21]	次瀚林,王先恺,董滨.不同污泥干化焚烧技术路线全链条碳足迹分析 [J]. 净水技术, 2021,40(6):77-82,99. Ci H L, Wang X K, Dong B. Carbon footprint analysis of different sludge drying and incineration processes [J]. Water Purification Technology, 2021,40(6):77-82,99.
[22]	闫志成,许国仁,李建政.污泥热解工艺的连续式生产性研究 [J]. 中国给水排水, 2017,33(13):16-20. Yan Z C, Xu G R, Li J Z. Production scale experimental study on sludge pyrolysis technology [J]. China Water & Wastewater, 2017,33 (13):16-20.
[23]	Suh Y J, Rousseaux P J R C, Recycling. An LCA of alternative wastewater sludge treatment scenarios [J]. 2002,35(3):191-200.
[24]	中华人民共和国国家质量技术监督检验检疫总局.锅炉节能技术监督管理规程 [Z]. 2010. AQSIQ. Supervision administreation regulation on energy conservation technology for boiler [Z]. 2010.
[25]	Poeschl M, Ward S, Owende P.Environmental impacts of biogas deployment - Part I: Life Cycle Inventory for evaluation of production process emissions to air [J]. Journal of Cleaner Production, 2012,24: 168–183.
[26]	Venkatesh G, Brattebø H. Energy consumption, costs and environmental impacts for urban water cycle services: Case study of Oslo (Norway) [J]. Energy, 2011,36(2):792-800.
[27]	Slavik E, Galessi R, Rapisardi A, et al. Wet oxidation as an advanced and sustainable technology for sludge treatment and management: results from research activities and industrial-scale experiences [J]. Drying Technology, 2015,33(11):1309-1317.
[28]	李博,王飞,朱小玲,等.污泥干化焚烧联用系统最佳运行工况研究 [J]. 环境污染与防治, 2014,36(8):29-33,42. Li B, Wang F, Zhu X L, et al. Study on the optimal operation condintion for sludge drying-incineration combined system [J]. Environmental Pollution & Control, 2014,36(8):29-33,42.
[29]	GB/T2589-2020 综合能耗计算通则 [S]. GB/T2589-2020 General rules for calculation of the comprehensive energy consumption [S].
[30]	刘心喜.水泥回转窑(火用)平衡分析与系统节能研究 [D]. 济南:山东大学, 2016 Liu X X. Research of exergy balanca analysis and energy saving for cement rotary kiln [D]. Ji'nan: Shandong University, 2016.
[31]	胡艳军,郑小艳,宁方勇.污水污泥热解过程的能量平衡与反应热分析 [J]. 动力工程学报, 2013,33(5):399-404. Hu Y J, Zheng X Y, Ning F Y. Analysis on energy balance and reaction heat of sewage sludge pyrolysis process [J]. Journal of Chinese Society of Power Engineering, 2013,33(5):399-404.
[32]	杜强强,戴明华,黄鸥.污泥热水解厌氧消化工艺热系统设计探讨 [J]. 中国给水排水, 2017,33:63-68. Du Q Q, Dai M H, Huang O. Discussion on design of thermal system of sludge thermal hydrolysis/anaerobic digestion process [J]. China Water & Wastewater, 2017,33:63-68.
[33]	杭世珺,关春雨.污泥厌氧消化工艺运行阶段的碳减排量分析 [J]. 给水排水, 2013,49:44-50. Hang S J, Guan C Y. Analysis on carbon emission reduction in the sludge anaerobic digestion process [J]. Water & Wastewater Engineering, 2013,49:44-50.
[34]	周立祥,胡霭堂,胡忠明.厌氧消化污泥化学组成及其环境化学性质 [J]. 植物营养与肥料学报, 1997,2:176-181. Zhou L X, Hu A T, Hu Z M. Chemical composition and environmental chemical properties of anaerobic digestion sludge [J]. Journal of Plant Nutrition and Fertilizers, 1997,2:176-181.
[35]	胡伟桐,余雅琳,李喆,等.不同调理剂对生物沥浸污泥堆肥氮素损失的影响 [J]. 农业环境科学学报, 2015,34:2379-2385. Hu W T, Yu Y L, Li Z, et al. Effrcts of different organic bing agents on Nitrogen loss during composting of dewatered bioleached sludge on a commercial scale [J]. Journal of Agro-Environment Science, 2015,34: 2379-2385.
[36]	陶明涛,张华,王艳艳,等.基于部分湿式氧化法的污泥资源化研究 [J]. 环境工程, 2011,29:402-404,244. Tao M T, Zhang H, Wang Y Y, et al. Study on resource recovery of sludge based on partial wet air oxidation [J]. Environmental Engineering, 2011,29:402-404,244.
[37]	GB 50757-2012 水泥窑协同处置污泥工程设计规范 [S]. GB 50757-2012 Code for design of sludge co-processing in cement kiln [S].
[38]	中华人民共和国国家质量监督检验检疫总局.烧碱单位产品碳排放限额 [Z]. 2019. AQSIQ. The norm of carbon emissions caps per unit product of caustic soda [Z]. 2019.
[39]	IPCC. 2019 refinement to the 2006 IPCC guidelines for national greenhouse gas inventory [R]. 2019.
[40]	陈舜,逯非,王效科.中国氮磷钾肥制造温室气体排放系数的估算 [J]. 生态学报, 2015,35(19):6371-6383. Chen S, Lu F, Wang X K. Estimation of greenhouse gases emission factors for China's nitrogen, phosphate and potash fertilizers [J]. Acta Ecologica Sinica, 2015,35(19):6371-6383.
[41]	刘立涛,张艳,沈镭,等.水泥生产的碳排放因子研究进展 [J]. 资源科学, 2014,36(1):110-119. Liu L T, Zhang Y, Shen L, et al. A review of cement production carbon emission factors: progress and prospects [J]. Resources Science, 2014,36(1):110-119.
[42]	亓鹏玉.城市污水处理厂温室气体的释放量估算研究 [J]. 低碳世界, 2016,(33):7-8. Qi P Y. Estimation of greenhouse gas emission from municipal sewage treatment plant [J]. Low Carbon World, 2016,(33):7-8.
[43]	戴晓虎,张辰,章林伟,等.碳中和背景下污泥处理处置与资源化发展方向思考 [J]. 给水排水, 2021,57(3):1-5. Dai X H, Zhang C, Zhang L W, et al. Thoughts on development direction of sludge treatment and resource recovery under the background of carbon neutrality [J]. Water & Wastewater Engineering, 2021,57(3):1-5.