Landfill leachate quantity and attenuation distance of inorganic contaminants in the groundwater of different hydrogeological systems: a case study of Lithuania

IF 0.5 4区 地球科学 Q4 GEOLOGY
Baltica Pub Date : 2019-12-16 DOI:10.5200/baltica.2019.2.1
Gintarė Slavinskienė, A. Jurevičius, J. Satkūnas, Rasa Šimanauskienė
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引用次数: 1

Abstract

This study examines the relationship between the quantity of landfill leachate and attenuation distance of inorganic contaminants in the groundwater of open, semi-open and closed hydrogeological systems. Nearly 2,000 groundwater samples were collected and 12 inorganic chemical parameters were investigated, of which NH4+, K+ and Fe were considered to be the most groundwater polluting chemical parameters. Analytical modelling of pollution migration, multivariate statistical techniques and a single factor pollution index method were applied for data processing. The results showed that irrespective of waste volume, the degradation coefficients of NH4+, K+ and Fe were by 36–90% higher in the groundwater of open hydrogeological systems, where attenuation distances were by 14–56% shorter compared with those in closed hydrogeological systems. Also, the degradation coefficients of NH4+, K+ and Fe+ in the groundwater of very small and small landfills were by 37–90% higher and attenuation distances were by 38–99% shorter compared with those in the groundwater of large and very large landfills. In the groundwater of very small and small landfills the difference between NH4+, Fe and K+ attenuation distance in open and closed hydrogeological systems was about 89–97% lower than the difference in large and very large landfills. This finding indicates that the quantity of leachate is the main factor of attenuation of contaminants in groundwater. The results obtained in this research may be used to predict the dispersion of pollution in the groundwater of landfills located in similar hydrogeological systems and to take environmental protection measures.
不同水文地质系统的垃圾渗滤液量及地下水中无机污染物的衰减距离——以立陶宛为例
研究了开放、半开放和封闭水文地质系统中垃圾渗滤液的数量与地下水中无机污染物衰减距离的关系。收集了近2000份地下水样品,研究了12个无机化学参数,其中NH4+、K+和Fe被认为是对地下水污染最大的化学参数。采用污染迁移分析模型、多元统计技术和单因素污染指数法对数据进行处理。结果表明:在不考虑废物量的情况下,开放水文地质系统地下水中NH4+、K+和Fe的降解系数比封闭水文地质系统高36 ~ 90%,衰减距离短14 ~ 56%;与大型和超大型填埋场相比,极小和极小填埋场地下水中NH4+、K+和Fe+的降解系数高37 ~ 90%,衰减距离短38 ~ 99%。在小型和小型填埋场地下水中,开放和封闭水文地质系统中NH4+、Fe和K+衰减距离的差异比大型和超大型填埋场的差异约小89 ~ 97%。这一发现表明,渗滤液的数量是地下水中污染物衰减的主要因素。研究结果可用于类似水文地质系统的垃圾填埋场的地下水污染扩散预测和环境保护措施。
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来源期刊
Baltica
Baltica 地学-地质学
CiteScore
1.30
自引率
14.30%
发文量
6
审稿时长
>12 weeks
期刊介绍: BALTICA is an international periodical journal on Earth sciences devoted to the Baltic countries region and the Baltic Sea problems. This edition as a Yearbook is established in 1961 by initiative of Academician Vytautas Gudelis. Since 1993, an Editor-in-Chief of the journal became Academician Algimantas Grigelis. BALTICA is published biannually (in June and December) in cooperation with geoscientists of the circum-Baltic States. BALTICA is publishing original peer-reviewed papers of international interests on various Earth sciences issues. The particular emphasis is given to Quaternary geology, climate changes and development of ecosystems, palaeogeography, environmental geology, as well as stratigraphy, tectonics, sedimentology and surface processes with relevance to the geological history of the Baltic Sea and land areas. Journal emphasizes modern techniques, methodology and standards. The journal structure comprises original articles, short reviews, information, bibliography.
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