Carbon performance analysis of upgraded wastewater treatment plants in key control areas of the Ziya River Basin in China.
In: Journal of Environmental Management, Jg. 362 (2024-06-20), S. N.PAG
academicJournal
Zugriff:
Wastewater treatment plants (WWTPs) are one of the largest sources of greenhouse gas (GHG) emissions, and they are also one of the largest energy consumption industries in urban systems. With the progression of upgrading and standard-rising, WWTPs both directly and indirectly increase carbon emissions from the increased investments in facilities and usages in electricity as well as chemical agents. Here, we collected operational data from 15 WWTPs in the key control areas of the Ziya River Basin in North China and accounted for the changes in carbon performance at different technical upgrade methods. Results showed that the average carbon emission performance increased by 0.487 kg CO 2 /m3 after the upgrade. Carbon emissions from electricity consumption, chemical usage, biochemical process and sludge treatment accounted for 42%, 17%, 24%, and 17% of the total improvement in carbon emission performance, respectively. Reducing energy consumption, regulating chemical use and sludge comprehensive utilization are the key to carbon emission reduction. It further proposes that the development of wastewater treatment discharge standards should fully consider the comprehensive utilization of water quality classification. Regions with favorable natural conditions should make full use of their advantages by adopting economically feasible, low-energy-consuming technologies such as constructed wetlands, which offer carbon sequestration and landscaping benefits. This study provides guidance on the selection of technological pathways for pollution reduction and carbon mitigation in the wastewater treatment industry and on achieving sustainable water resource utilization. • The preliminary results suggested that upgrading WWTPs consumed substantial resources and energy, increasing both investment and carbon emissions in the Ziya River Basin in North China. • Reducing energy consumption, regulating chemical use and sludge comprehensive utilization are the key to carbon mitigation. • This study proposes to formulate and implement different wastewater treatment discharge standards with the consideration of water body vulnerability and water utilization. • Regions with favorable natural conditions should make full use of their advantages by adopting economically feasible, low-energy-consuming technologies such as constructed wetlands, which offer carbon sequestration and landscaping benefits. [ABSTRACT FROM AUTHOR]
Titel: |
Carbon performance analysis of upgraded wastewater treatment plants in key control areas of the Ziya River Basin in China.
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Autor/in / Beteiligte Person: | Liu, Jiahao ; Wang, Zhongqian ; Zhang, Tonggang ; Liu, Rui ; He, Weiguang ; Kong, Xiangye ; Shi, Yaolong ; Xie, Jianfeng |
Zeitschrift: | Journal of Environmental Management, Jg. 362 (2024-06-20), S. N.PAG |
Veröffentlichung: | 2024 |
Medientyp: | academicJournal |
ISSN: | 0301-4797 (print) |
DOI: | 10.1016/j.jenvman.2024.121304 |
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