环境工程学报2024，Vol.18Issue(10)：2899-2907,9.DOI:10.12030/j.cjee.202311163
预处理策略对餐厨垃圾厌氧消化性能的影响及能量平衡分析
Impact of pretreatment strategies on anaerobic digestion of food waste and energy balance analysis
摘要
Abstract
To enhance methane production from food waste through anaerobic digestion,the effectiveness and economic feasibility of various pretreatment methods were evaluated.The automatic methane potential test system(AMPTS Ⅱ)was used to explore the effects of various pretreatment methods on methane production and energy balance during the anaerobic digestion of food waste.The results showed that various pretreatment methods resulted in a methane yield increase of 7.9％to 16.3％.Thermophilic pretreatment showed the highest cumulative methane yield of 225.0 mL CH4·(g·VS)-1,while the control group only had a cumulative methane yield of 193.5 mL CH4·(g·VS)-1.Comparing the applicability of the Cone,Modified Gompertz and Modified Gompertz second-order equation models to pretreated food waste,the Modified Gompertz second-order equation model explained the degradation characteristics of the two stages of FW and provided predictions for the methane production potential of refractory substances in the second stage.The concentration trends of dissolved organic matter(SCOD),ammonia nitrogen,protein,and polysaccharides during anaerobic digestion were consistent with methane production.This study suggested that pretreated food waste could provide a greater amount of organic digested substances and ultimately improve the efficiency of anaerobic digestion.In addition,after pretreatment,the voids in the surface structure of food waste become larger and denser,providing more attachment points for anaerobic microorganisms and improving the methane production rate of the anaerobic digestion system.The results of the energy balance analysis indicated that the energy efficiency of different treatment groups ranged from 8.3％to 15.1％,and the high temperature group had the highest net energy benefit of 293.5 kJ.This study provides a theoretical framework for optimizing food waste pretreatment and offers a new approach to food waste resource and energy utilization.关键词
餐厨垃圾/预处理策略/厌氧消化/动力学模型/能量收支Key words
food waste/pretreatment strategy/anaerobic digestion/dynamic model/energy balance分类
资源环境引用本文复制引用
潘志勇,孙璇,黄雅丽,王国祥,张利民,祁闯..预处理策略对餐厨垃圾厌氧消化性能的影响及能量平衡分析[J].环境工程学报,2024,18(10):2899-2907,9.基金项目
江苏省青年基金资助项目(BK20210676) （BK20210676）
江苏省农业科技自主创新资助项目(CX213069) （CX213069）
江苏省研究生科研创新计划资助项目(KYCX22_1707) （KYCX22_1707）
江苏省研究生科研创新计划资助项目(SJCX23_0656) （SJCX23_0656）
江苏省高校优势学科建设工程资助项目(PAPD) （PAPD）
