基于城市有机固废协同的污泥焚烧碳排放分析

张长城; 卢骏营; 胡维杰

doi:10.13205/j.hjgc.202507009

基于城市有机固废协同的污泥焚烧碳排放分析

doi: 10.13205/j.hjgc.202507009

上海市政工程设计研究总院(集团)有限公司, 上海 200092

基金项目:

上海市科技计划项目“多源城市有机固废清洁利用关键技术研究及工程应用”（23230730600）；上海市住建委科研项目“城市多源有机固废清洁焚烧和气化关键技术研究与工程应用示范”（沪建科2022-002-001）；上海市政工程设计研究总院（集团）有限公司拂晓计划资助“基于固废协同的污泥焚烧能量自给及其零碳排放技术研究”（K2024N025）

详细信息

作者简介:
张长城（1994—），男，工程师，主要研究方向为污水、污泥处理处置与资源化。zhangchangcheng@smedi.com

通讯作者:
张长城（1994—），男，工程师，主要研究方向为污水、污泥处理处置与资源化。zhangchangcheng@smedi.com

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出版历程
- 收稿日期: 2024-10-22
- 录用日期: 2025-07-01
- 修回日期: 2025-04-24
- 网络出版日期: 2025-09-11

Analysis of carbon emissions of sludge co-incineration with urban organic solid waste

Shanghai Municipal Engineering Design Institute (Group) Co., Ltd., Shanghai 200092, China

摘要

摘要: 污泥干化焚烧-建材利用已成为重要的主流处理处置技术路线之一。污泥协同城市有机固废焚烧是实现污泥焚烧系统能量自供给和碳排放近零的可行模式，有利于污泥处理减污降碳节能增效。以一般工业固废为例，结合工程实践分析了基于城市有机固废协同的污泥焚烧能量平衡与碳排放。城市有机固废协同焚烧可提高平均入炉热值，使系统实现能量盈余，不仅可满足污泥干化等系统自用热量，无需消耗外部补充热源和电能，还可实现对外热电联供。相比于污泥单独焚烧，城市有机固废协同虽提高了直接碳排放强度，但通过能量自供给，外部热耗和电耗引起的间接碳排放强度显著降低。同时，能源和资源外供产生碳补偿，系统净碳排放有望实现碳汇。当城市有机固废中矿物碳比例达到50%时，单位处理量的碳汇强度为-28.5 kg/t。
- 污泥 /
- 固废 /
- 协同 /
- 焚烧 /
- 能量平衡 /
- 碳排放
Abstract: Sludge drying incineration has become one of the mainstream treatment technologies. With the promotion of the construction of zero-waste city， urban solid waste treatment and disposal is becoming increasingly prominent. Sludge co-incineration with urban organic solid waste is a feasible model to achieve energy self-supply and near-zero carbon emission of sludge incineration system， which is conducive to reducing pollution， carbon emission， energy saving and high-efficiency of sludge treatment. This research focuses on common industrial solid wastes， drawing from engineering practices， examines the energy balance and carbon emissions of the co-incineration of these wastes with sludge. The calculation results indicate that urban organic solid waste synergy can increase the average heat value of the mixed fuel fed into the incinerator， and make the system achieve energy surplus， can not only meet the system's own heat demand such as sludge drying， without consuming external supplementary heat sources and electrical energy， but also achieve cogeneration of heat and power. Compared to sludge incineration， co-incineration with urban organic solid waste increases the direct carbon emission intensity； however， with self-sufficiency in energy， the indirect carbon emission intensity caused by external heat and electricity consumption is significantly reduced. Additionally， the external supply of energy and resources leads to carbon offset， and the net carbon emission of the system may potentially contribute to carbon sequestration， also known as carbon sinks. When the proportion of fossil derived carbon in urban organic solid waste reaches 50%， the carbon sink intensity per unit processing capacity is -28.5 kg/t.
- sludge /
- solid waste /
- synergy /
- incineration /
- energy balance /
- carbon emission

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参考文献(10)

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