| Issue |
E3S Web of Conf.
Volume 406, 2023
2023 9th International Conference on Energy Materials and Environment Engineering (ICEMEE 2023)
|
|
|---|---|---|
| Article Number | 03029 | |
| Number of page(s) | 5 | |
| Section | Pollution Control and Ecosystem Management | |
| DOI | https://doi.org/10.1051/e3sconf/202340603029 | |
| Published online | 31 July 2023 | |
Comparison of Carbon Emissions in Different Sludge Treatment Pathways - a Case Study of Jiaxing, China
1 Power China Huadong Engineering Corporation Limited, Hangzhou 311122, Zhejiang, China
2 College of Environmental and Resource Science, Zhejiang University, Hangzhou 310029, Zhejiang, China
3 Huadong Eco-Environmental Engineering Research Institute of Zhejiang Province, Hangzhou 311122, Zhejiang, China
4 Yangtze River Delta (Jiaxing) Ecological Development Co., Ltd., Jiaxing 314000, Zhejiang, China
5 Haining Smart Environmental Protection and Solid Waste Pollution Prevention and Control Center, Jiaxing 314400, Zhejiang, China
* Corresponding author: Li_jj2@hdec.com
Sludge management strategy is essential to future carbon reduction in wastewater plants since the treatment and disposal of sludge contribute significantly to the carbon emissions. Using the method proposed by intergovernmental Panel on Climate Change(IPCC), the three sludge treatment paths of a typical wastewater treatment plant in Jiaxing were investigated. The result showed that net carbon emission is negative at -588kgCO2/tDS thanks to R3 which is characterized by centrifugal dehydrator, coal blending incineration with combined heat and power generation and cement substitute by slag is the rout with lowest carbon missions. The carbon emission of R1 is the highest at 699.87 kgCO2/tDS because of the chemical reagents. Process unit with larger carbon emissions was identified to be dewatering in which chemical reagent contributed the most. The main carbon offsets was the combined heat and power cogeneration which should be widely advocated.
© The Authors, published by EDP Sciences, 2023
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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