生活垃圾填埋场不同粒径矿化垃圾中N、P、K的分布  

Distribution of N,P and K in Aged Refuse with Different Particle Sizes in MSW Landfills

作　　者：侯棻 李甜 HOU Fen;LI Tian(Department of Land Resource Management,School of Public Administration,Shanxi University of Finance and Economics,Taiyuan Shanxi 030006)

机构地区：[1]山西财经大学公共管理学院土地资源管理系,山西太原030006

出　　处：《环境卫生工程》2022年第3期84-89,共6页Environmental Sanitation Engineering

基　　金：2021年山西省高等学校科技创新项目(2021L280)。

摘　　要：为探索矿化垃圾作为植物栽培土的可行性,对矿化垃圾中的营养元素N、P、K含量进行了分析。鉴于不同粒径矿化垃圾营养元素含量的差异性,分析测定了不同粒径(0~90、90~105、105~150、150~300、300~900μm)中N、P、K 3种植物营养元素随时间的变化规律。研究结果表明:填埋20 a后,矿化垃圾中N、P和K含量仍能满足植物生长所需,但是随着粒径分布的变化呈现不同的趋势;与10 a前研究结果相比,N、K含量明显降低,P含量略有所增加。由此得出,矿化垃圾中N、P和K的含量受填埋时间和粒径分布的影响较大。在作为植物栽培土使用时,不同粒径可以选择分开应用,并且对矿化垃圾的开采和应用应选择在填埋的适当时间阶段。In order to explore the availability of the aged refuse as plant cultivation soil,the contents of nutrient elements N,P and K in aged refuse were analyzed.In view of the differences of nutrient elements contents in aged refuse with different particle sizes,the changes of the three plant nutrients with time in different particle sizes(0~90,90~105,105~150,150~300,300~900μm)were analyzed.The results showed that the content of N,P and K in aged refuse were still adequate for plant growth after twenty years of landfill,However,there were different trends with the change of particle size distribution.Compared with the results before ten years,the content of N and K decreased significantly,while the content of P increased slightly.It could be concluded that the contents of N,P and K in the aged refuse were greatly affected by landfill time and particle size distribution.When used as soil for plant cultivation,different particle sizes could be applied separately,and the mining and application of aged refuse should be selected at the appropriate time stage of landfill.

关 键 词：矿化垃圾 N P K 粒径分布 

分 类 号：X799.3[环境科学与工程—环境工程]