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.
福州市东南区水厂运营阶段碳排放核算研究
- Title:
- Accounting of Carbon Emission from Dongnan Waterworks of Fuzhou City during Operational Stage
- Keywords:
- waterworks; advanced treatment process; accounting of carbon emission; carbon emission intensity
- 摘要:
- 福州市东南区水厂在“混凝+澄清+过滤+消毒”常规处理工艺的基础上，进水端增加了“预臭氧”工艺，出水端增加了“臭氧+生物活性炭”深度处理工艺，采用厢式隔膜压滤系统进行污泥脱水。通过排放因子法核算得到，该水厂2022年的碳排放强度均值为0.103 82 kgCO2-eq/m3，碳排放总量为3 426 635.85 kgCO2-eq；按工艺段划分，二级泵房的碳排放占比最大，为58.22%；按主要碳排放活动划分，电力消耗引起的碳排放占比最大，为77.85%；深度处理工艺的应用降低了整个净水过程的碳排放强度，该水厂由消毒剂产生的碳排放强度约为采用常规处理工艺的东区水厂的52.94%；厢式隔膜压滤系统的碳排放强度为离心脱水系统的61.37%，节能减碳效果明显。
- 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.
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