Adding a recyclable amendment to facilitate sewage sludge biodrying and reduce costs

doi:10.1016/j.chemosphere.2020.127009

	Adding a recyclable amendment to facilitate sewage sludge biodrying and reduce costs
	Wang, Kan 1; Wang, Yang-Yan 1; Chen, Tong-Bin 2; Zheng, Guo-Di 2; Cao, Meng-Ke 1; Cai, Lu 1
刊名	CHEMOSPHERE
	2020-10-01
卷号	256 页码:10
关键词	Biodrying Biodegradation Bioheat Sewage sludge Recyclable amendment
ISSN号	0045-6535
DOI	10.1016/j.chemosphere.2020.127009
通讯作者	Cai, Lu(cailu@nbu.edu.cn)
英文摘要	Finding an economical amendment, available in a steady supply, is needed to support the biodrying industrialization. This research developed a recyclable biodrying amendment (RBA) to condition the biodrying of sewage sludge. The pilot-scale treatment (T-R), which included the addition of equivalent weights of RBA and sawdust as amendments, resulted in a higher pile temperature and longer thermophilic phase compared to the control (T-C), which used only sawdust as an amendment. The final moisture content levels were below 50% with both T-R and T-C. The heat use efficiency for water evaporation was 72.2% and 73.0% in T-R and T-C, respectively. The activity of alpha-amylase and cellulose 1,4-beta-cellobiosidase increased during the thermophilic phase, while the activity of endo-1,4-beta-glucanase and endo-1,4-beta-xylanase decreased during the thermophilic phase with both T-R and T-C. The fouriertransform infrared spectra indicated that adding the RBA resulted in good biodegradability of the lipids, proteins, and polysaccharides. The humic acid to fulvic acid ratio in T-R and T-C increased from 0.33 (T-R) and 0.35 (T-C) on day 0-0.46 (T-R) and 0.45 (T-C) on day 21, indicating the humification process. The RBA recovery rate was 95.6% and can be reused. These findings highlight that adding RBA showed satisfactory biodrying performance, reduced the amendment cost, and the biodrying product could be incinerated without energy deficit. (C) 2020 Elsevier Ltd. All rights reserved.
资助项目	Public Welfare Technology Research Program of Zhejiang Province[LGF20E080011] ; Scientific Research Project of Department of Education of Zhejiang Province[Y201940862] ; National Key Research and Development Program[2016YFC0401102-5] ; K. C. Wong Magna Fund at Ningbo University
WOS关键词	BULKING AGENTS ; GASEOUS EMISSIONS ; COMPOST ; MATURITY ; ASSOCIATION ; NITROGEN ; QUALITY
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000540870300018
资助机构	Public Welfare Technology Research Program of Zhejiang Province ; Scientific Research Project of Department of Education of Zhejiang Province ; National Key Research and Development Program ; K. C. Wong Magna Fund at Ningbo University
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/162338]
专题	中国科学院地理科学与资源研究所
通讯作者	Cai, Lu
作者单位	1.Ningbo Univ, Sch Civil & Environm Engn, 818 Fenghua Rd, Ningbo 315211, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Wang, Kan,Wang, Yang-Yan,Chen, Tong-Bin,et al. Adding a recyclable amendment to facilitate sewage sludge biodrying and reduce costs[J]. CHEMOSPHERE,2020,256:10.
APA	Wang, Kan,Wang, Yang-Yan,Chen, Tong-Bin,Zheng, Guo-Di,Cao, Meng-Ke,&Cai, Lu.(2020).Adding a recyclable amendment to facilitate sewage sludge biodrying and reduce costs.CHEMOSPHERE,256,10.
MLA	Wang, Kan,et al."Adding a recyclable amendment to facilitate sewage sludge biodrying and reduce costs".CHEMOSPHERE 256(2020):10.