Sludge treatment and resource recovery towards carbon neutrality in China: current status and future perspective

IF 2.3 Q3 ENVIRONMENTAL SCIENCES Blue-Green Systems Pub Date : 2021-11-22 DOI:10.2166/bgs.2021.115
Ying Xu, Rui Liu, Dong-fang Yang, Xiaohu Dai
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引用次数: 13

Abstract

Global warming – mainly caused by carbon emissions – is a major global challenge for human sustainable development. Carbon emission reduction and resource recovery from sludge treatment are critical to the carbon neutralisation of future wastewater treatment plants. This paper analyses the key elements of carbon emissions during sludge treatment and disposal, namely energy source carbon emissions, fugitive carbon emissions and carbon compensation. Of the four mainstream process routes analysed in this work, anaerobic digestion + dry incineration is identified as the route with the highest potential for reducing carbon emissions in the future. Finally, based on a review of current international research hotspots, the future development directions for sludge treatment and resource recovery are discussed. This paper thus provides a comprehensive understanding of the current sludge treatment processing routes and serves as a reference for process route selection and future research on carbon neutralisation.
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中国污泥处理与资源回收的碳中和:现状与未来展望
全球变暖——主要由碳排放引起——是人类可持续发展面临的重大全球性挑战。从污泥处理中减少碳排放和资源回收对未来污水处理厂的碳中和至关重要。本文分析了污泥处理处置过程中碳排放的关键要素,即能源碳排放、逸散性碳排放和碳补偿。在本研究分析的四种主流工艺路线中,厌氧消化+干式焚烧被认为是未来减少碳排放潜力最大的路线。最后,在综述当前国际研究热点的基础上,探讨了污泥处理和资源化利用的未来发展方向。从而全面了解目前污泥处理工艺路线,为今后的工艺路线选择和碳中和研究提供参考。
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Blue-Green Systems
Blue-Green Systems Multiple-
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8.70
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