厦门市厨余垃圾特性及对干法厌氧消化的影响研究  

作　　者：徐利红 

机构地区：[1]厦门珉鸿生物质资源有限公司,福建厦门361000

出　　处：《环境保护与循环经济》2024年第8期10-13,共4页environmental protection and circular economy

摘　　要：随着厦门市垃圾分类工作的推进,厨余垃圾的成分发生变化。掌握厨余垃圾理化特性及其季节性变化情况可为新建项目工艺的选择提供基础数据,同时为已建的项目工艺调整提供依据,以期实现厨余项目的精细化管理与处理设施的高效运行。在调查厦门市厨余垃圾季节性成分变化的基础上,对厨余垃圾的物理成分、总固体含量、C/N、油脂含量等进行检测,分析其对干法厌氧消化部分指标的影响。结果表明:厨余垃圾的主要成分为易腐垃圾,平均值为77.76%;总固体含量较低,平均值为28.68%;厦门市厨余垃圾油脂含量较高、C/N指标较低,尤其在气温较低的冬季及春季比较明显,平均值为15.17%。厨余垃圾性质波动会对干法厌氧消化单元的运行稳定性造成影响,导致沼气产率降低,有酸化风险,影响项目效益。With the promotion of garbage classification work in Xiamen city,the composition of kitchen waste has changed.Grasping the physical and chemical characteristics of kitchen waste and its seasonal changes can provide basic data for the process selection of new projects,and provide a basis for the process adjustment of the existing projects,in order to realize the fine management of kitchen waste projects and the efficient operation of treatment facilities.On the basis of investigating the seasonal composition changes of kitchen waste in Xiamen city,Fujian Province,this paper tests the physical composition,total solid content(TS),C/N ratio and oil content of kitchen waste,and analyzes the influence on some indexes of dry anaerobic digestion.The results show that the main component of kitchen waste is perishable waste with the average value of 77.76%;the total solid content(TS)is low with the average value of 28.68%.At the same time,the oil content of kitchen waste in Xiamen is high,and the C/N index is low,especially in the winter and spring when the temperature is low,the average value is 15.17%.The fluctuation of the nature of kitchen waste will affect the operation stability of the dry anaerobic digestion unit,lead to the reduction of biogas yield,the risk of acidification,and affect the project benefit.

关 键 词：厨余垃圾 理化性质 干法厌氧发酵 酸化 

分 类 号：X799.3[环境科学与工程—环境工程]