垃圾填埋场污泥灰中重金属浸出的Lca

IF 1 4区 环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES
D. Nakić, D. Vouk, M. Šiljeg, Anđelina Bubalo
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引用次数: 2

摘要

经过热处理(主要是焚烧)的污水污泥的数量正在增加,导致污水污泥灰(SSA)的数量不断增加,这也需要进一步的管理。尽管它是一种有潜力的资源,但它大部分仍被填埋。考虑到SSA中存在潜在毒性和有害重金属,本文通过LCA分析了填埋SSA中选定重金属浸出浓度的变化对环境(空气、水和土壤)的影响。当将人类毒性潜力作为影响类别考虑时,主要影响是由于排放到空气中,主要是由于硒的浸出以及镉、汞和镍的少量浸出。在考虑陆地生态毒性潜在影响时,汞的影响占主导地位。在从克罗地亚污泥中获得的ssa中,钼浸出以及硒和汞显示出主要影响。因此,由于微量元素的高变异性,需要对不同的SSAs进行详细的分析。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
LCA OF HEAVY METALS LEACHING FROM LANDFILLED SEWAGE SLUDGE ASH
Quantities of sewage sludge that are thermally treated (mostly incinerated) are increasing, resulting in growing quantities of sewage sludge ash (SSA) which also requires further management. Despite its potential as a resource, it is still largely landfilled. Considering the presence of potentially toxic and hazardous heavy metals in SSA, this paper analyzes how the change in the leaching concentrations of the selected heavy metals from landfilled SSA impacts the environment (air, water, and soil) by the means of LCA. When considering human toxicity potential as impact category, dominant impacts were due to emissions into the air, primarily caused by leaching of selenium and somewhat less cadmium, mercury and nickel. Mercury had a dominant impact when considering the terrestrial ecotoxicity potential impact. In the SSAs obtained from Croatian sludge, molybdenum leaching, along with selenium and mercury, showed a dominant impact. Therefore, due to the high variability of trace elements, detailed analysis of different SSAs is needed.
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来源期刊
CiteScore
1.90
自引率
7.70%
发文量
41
审稿时长
>12 weeks
期刊介绍: The Journal of Environmental Engineering and Landscape Management publishes original research about the environment with emphasis on sustainability.
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