可再生能源2025，Vol.43Issue(7)：869-877,9.
基于LCA的沼气工程3种沼液处理工艺综合效益分析
Comprehensive benefit analysis of three biogas slurry treatment processes for biogas engineering based on LCA
摘要
Abstract
In order to analyse the environmental impacts of the life cycle of the biogas project,the environmental impacts of the three biogas slurry treatment modes of the biogas project were analysed by using the method of life cycle assessment,and the environmental impacts of the different phases of the biogas project system were systematically compared.Taking the biogas project of Shandong MH Company as an example,the whole life cycle of the biogas project includes the raw material and fermentation stage,the biogas utilisation stage,the storage and utilisation stage of the digestate and digestate residue,and the transport stage of the digestate,of which the utilisation stage of the digestate is set up as the three modes:directly returning to the field after solid-liquid separation,returning to the field after adding the ammonia blow-off process,and returning to the field after adding the membrane thickening process.The results showed that the environmental impact potentials of the three modes of biogas treatment in this biogas project were-0.044 6,-0.038 2 and-0.023 0,respectively,and the direct return of the biogas to the field after solid-liquid separation had the best environmental benefits.The results of the economic cost analysis show that the average annual revenue of the biogas project is 92.804 million yuan,the financial net present value(FNPV)is 458.497 5 million yuan,the project's net income is 287.749 million yuan,and the financial internal rate of return(FIRR)is 43.26%,and all the indexes show that the operation of the MH Company biogas project has a good economic return.关键词
沼气工程/生命周期评价/环境影响/氨吹脱/膜浓缩Key words
biogas plant/life cycle assessment(LCA)/environmental impacts/ammonia blow-off/membrane concentration分类
能源科技引用本文复制引用
陈理,Muhammad Yousuf,陈帅宇,马明旭,赖有春,柳珊..基于LCA的沼气工程3种沼液处理工艺综合效益分析[J].可再生能源,2025,43(7):869-877,9.基金项目
"餐厨垃圾沼液资源化利用技术集成与示范"-金华市科技计划项目(2022-3-066). （2022-3-066）
