餐厨垃圾厌氧处理“碳中和”综合效益评价

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Abstract In order to comprehensively assess the impact and benefit of food waste treatment, life cycle environmental impact assessment of food waste treatment process was conducted, especially technical units. Carbon neutral calculation model was established to predict and verify the actual carbon emission and energy consumption. The practical case was evaluated by integrated consideration of “environment-economic-social” benefit. The results showed that the biomass fertiliser processing and biogas purification units caused 39% and 59% of the total environmental impact respectively. In addition, the carbon emission from crude oil refining and biogas purification were significantly reduced in the form of bio-based product recovery, accounting for 9.7% and 54.7% of the theoretical carbon reduction, respectively. The food waste treatment plant needs to reduce the discrepancy between theoretical and actual carbon emission by increasing the stability of the system, improving the gas monitoring system, increasing the technical treatment efficiency and optimising the additional energy consumption of the equipment. The overall assessment showed that analysed model of food waste treatment has potential to be "carbon-negative" and bright future prospects for technology promotion.

Key words： food waste anaerobic treatment environmental impact carbon neutral case analysis

Received: 17 June 2022

PACS:

X705

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	Articles by authors
	SHI Chuan
	LI Kun
	BIAN Xiao
	WANG Kai-jun

Cite this article:

SHI Chuan,LI Kun,BIAN Xiao等. Environmental impact and carbon neutral benefit of food waste anaerobic treatment case evaluation[J]. CHINA ENVIRONMENTAL SCIENCECE, 2023, 43(1): 436-445.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2023/V43/I1/436

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