Pile settlement and volume reduction measurement during forced-aeration static composting

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	Pile settlement and volume reduction measurement during forced-aeration static composting
	Chen Tong-Bin; Gao Ding; Zheng Guo-Di
	2008
关键词	Astrophysics Measurements Piles Velocity distribution
英文摘要	In this study, a settlement measurement device was used to track the settlement of different layers in composting piles, and time courses of settlement velocity, bulk density distribution, and effective bulk density were investigated. Settlement is divided into two stages: the physical compressive settlement and the mass loss settlement. At the end of the former stage, bulk density (ρ′) and pile height (h) follow ρ′ = Ah^B, where A is a fitting parameter for the initial bulk density of the composting material, and B is the compression parameter. The physical compressibilities of composting mixtures are night-soil sludge and garden refuse (1:1) > sewage sludge and cornstalks (5:4) > night-soil sludge and garden refuse (2:3) > sewage sludge and bark (1:1). Adding the proportion of bulking agent in the proper extent effectively retarded composting settlement. Bark exhibits a better supporting capability than cornstalk does as a bulking agent. © 2008 Elsevier Ltd. All rights reserved.
出处	Bioresource Technology
卷	99 期:16 页:7450-7457
收录类别	EI
语种	英语
内容类型	EI期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/24406]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Chen Tong-Bin,Gao Ding,Zheng Guo-Di. Pile settlement and volume reduction measurement during forced-aeration static composting. 2008.