Combined sieving and washing of multi-metal-contaminated soils using remediation equipment: A pilot-scale demonstration

doi:10.1016/j.jclepro.2018.11.294

	Combined sieving and washing of multi-metal-contaminated soils using remediation equipment: A pilot-scale demonstration
	Li, You 1,2; Liao, Xiaoyong 1; Li, Wunan 1
刊名	JOURNAL OF CLEANER PRODUCTION
	2019-03-01
卷号	212 页码:81-89
关键词	Soil washing Physical separation Multi-metal contamination Optimization Remediation equipment
ISSN号	0959-6526
DOI	10.1016/j.jclepro.2018.11.294
通讯作者	Liao, Xiaoyong(Liaoxy@igsnrr.ac.cn)
英文摘要	This study mainly examines the effects of combined sieving and washing process by remediation equipment for heavy metal decontamination at a historically contaminated site. The laboratory results showed that the optimum parameters for the washing process were pH 2, 30 degrees C, and 10:1 liquid/soil ratio. The results from field remediation proved that the overall removal of arsenic (As), cadmium (Cd), lead (Pb), and zinc (Zn) could reach 37.1-51.1%, 44.3-78.1%, 21.2-64.3% and 29.2-59.4%, respectively, in various particle fractions. To prevent secondary pollution, coagulating sedimentation and adsorption processes were used to treat the wastewater, with removal rates of 99.4% As, 99.9% Cd, 93.5% Pb and 99.1% Zn. A composite material was adopted to solidify the fine clay that was enriched with a large amount of metals and form it into non-fired bricks. As seen from the mass balance, 23 kg of stone and 140 kg of gravel were separated, and 367 kg of fine clay with a 45% soil moisture content was treated by solidification and stabilization, achieving a volume reduction of approximately 36.5%. In conclusion, the presented method can be applied to heavy-metal-contaminated sites to greatly reduce the amount of pollutants in soils while at the same time minimizing the environmental risk. (C) 2018 Elsevier Ltd. All rights reserved.
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23000000] ; Key Research Program of the Chinese Academy of Sciences[ZDRW-ZS-2016-5-5]
WOS关键词	HEAVY-METALS ; REMOVAL ; ZN ; IMMOBILIZATION ; TECHNOLOGIES ; COMBINATION ; ZINC ; EDTA ; PB ; CR
WOS研究方向	Science & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000457952500008
资助机构	Strategic Priority Research Program of the Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/49909]
专题	中国科学院地理科学与资源研究所
通讯作者	Liao, Xiaoyong
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing Key Lab Environm Damage Assessment & Reme, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100099, Peoples R China
推荐引用方式 GB/T 7714	Li, You,Liao, Xiaoyong,Li, Wunan. Combined sieving and washing of multi-metal-contaminated soils using remediation equipment: A pilot-scale demonstration[J]. JOURNAL OF CLEANER PRODUCTION,2019,212:81-89.
APA	Li, You,Liao, Xiaoyong,&Li, Wunan.(2019).Combined sieving and washing of multi-metal-contaminated soils using remediation equipment: A pilot-scale demonstration.JOURNAL OF CLEANER PRODUCTION,212,81-89.
MLA	Li, You,et al."Combined sieving and washing of multi-metal-contaminated soils using remediation equipment: A pilot-scale demonstration".JOURNAL OF CLEANER PRODUCTION 212(2019):81-89.