污泥堆肥施用对土壤及地下水影响研究

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Abstract In order to explore the influence of applying municipal sludge composting products in Beijing for soil and ground water, the migration and leaching characteristics of eight heavy metals elements (Cu, Cr, Ni, Zn, Pb, Cd, As and Hg) were studied under the conditions of 3, 6, 12kg/m² composting products added in soil and rain simulating by means of undisturbed soil column experiment. The results showed that Cd remained least (6.1%~11.9%) and leached most (4.5%~7.3%), while Hg remained most (16.0%~22.1%) and leached least (<0.1%). Most Hg, Pb, Ni, Cd and Cu accumulated in the top soil layer (52.0%~78.7%), while most Cr, Zn and As accumulated in the middle layer(42.7%~53.2%).The contents of eight elements in soil all met the national regulation (GB 15618-2018). The concentrations of the six measured elements were in descending order Zn > As > Cd > Cu > Pb > Cr. The relationship among the concentrations and amounts of compost applied and water volume was discussed. According to national regulation (GB/T 14848-2017), the concentrations of Cu, Cr, Ni, Zn and Pb in lechate were always within the range of Class I, while Cd, As and Hg were within the range of Class III.

Key words： heavy metals sludge composting soil column leaching characteristics

Received: 16 October 2019

PACS:	X705
	X53
	X523

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	Articles by authors
	HU Yi-shui
	QI Shi
	LI Yu-tong
	ZHOU Jin-xing
	WU Bing-chen

Cite this article:

HU Yi-shui,QI Shi,LI Yu-tong等. Effects of sludge composting products on soil and groundwater[J]. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(5): 2157-2166.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2020/V40/I5/2157

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