WEIZhong-qing,LüHui,XUXing-zhong,et al.Accounting of Carbon Emission from Dongnan Waterworks of Fuzhou City during Operational Stage[J].China Water & Wastewater,2024,40(21):54-58.
Accounting of Carbon Emission from Dongnan Waterworks of Fuzhou City during Operational Stage
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第40卷
Number:
第21期
Page:
54-58
Column:
Date of publication:
2024-11-01
- Keywords:
- waterworks; advanced treatment process; accounting of carbon emission; carbon emission intensity
- Abstract:
- Based on the conventional treatment process of coagulation, clarification, filtration and disinfection in Dongnan Waterworks of Fuzhou City, the pre-ozonation was incorporated at the inlet, and the advanced treatment process of ozonation and biological activated carbon was appended at the outlet, while the sludge was dewatered through the chamber type diaphragm filter press system. Based on the emission factor method, the average carbon emission intensity of the waterworks in 2022 was 0.103 82 kgCO2-eq/m3, and the annual carbon emission was 3 426 635.85 kgCO2-eq. Based on the process unit, the carbon emission of the secondary pumping house took up the largest proportion, amounting to 58.22%. Based on the major carbon emission activities, the proportion of carbon emission attributed to electricity consumption was the highest, reaching 77.85%. The application of the advanced treatment process was capable of reducing the carbon emission intensity throughout the entire water purification process, and the carbon emission intensity generated by disinfectants in this waterworks was approximately 52.94% of that of Dongqu Waterworks employing conventional treatment technology. The carbon emission intensity of the chamber type diaphragm filter press system amounted to 61.37% of that of the centrifugal dehydration system, and the effect of energy conservation and carbon reduction was remarkable.
Last Update:
2024-11-01