Factors influencing groundwater contamination near municipal solid waste landfill sites in the Qinghai-Tibetan plateau

Zeng, Dan; Chen, Guanyi; Zhou, Ping; Xu, Hao; Qiong, An; Bu, Duo; Lü, Xuebin; Wang, Zaimin; Han, Zhiyong

doi:10.1016/j.ecoenv.2021.111913

Cited by 40 publications

(19 citation statements)

References 25 publications

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“…In the case of the analysed landfills, no significant impact on groundwater quality was demonstrated, especially due to the application of an effective protection system against the contamination. The role of engineering solutions was highlighted also by Zeng et al [44] who stated that Tibet waste landfills with effective liners caused no significant impact on groundwater contamination at MSW landfill sites. Nevertheless, even if the landfill is properly designed, some emergency cases can occur.…”

Section: Discussionmentioning

confidence: 97%

Monitoring and Assessment of Groundwater Quality at Landfill Sites: Selected Case Studies of Poland and the Czech Republic

et al. 2021

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In order to protect the components of natural environment, each landfill must be properly secured and the monitoring program should be adopted. This study aims to present a comparative analysis of groundwater quality at selected landfill sites in Poland and the Czech Republic, with a special attention given to the levels and temporal changes of heavy metals (HMs) concentrations measured in collected groundwater samples. A secondary objective was to detect possible leakages of pollutants from the landfill body, into the groundwater, and further into the environment. The assessment of groundwater quality was based on a comparison of HMs concentrations with standards provided by the European environmental laws. On the basis of the long-term monitoring period, it was revealed, for the Polish landfill site, that the groundwater quality is improving over time, especially due to remedial works applied. For the Czech landfill, it was observed that the quality of groundwater is not negatively affected by the operation of the landfill, but in the immediate vicinity of the landfill, the groundwater quality is significantly affected by the agricultural use of neighbouring lands, as well as by the storage of construction and demolition wastes. The results showed that the leachate did not leak outside the landfills, especially due to minimal concentrations of HMs, measured in groundwater samples, taken from the piezometers located in the outflow direction from the landfills.

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Section: Discussionmentioning

confidence: 97%

Monitoring and Assessment of Groundwater Quality at Landfill Sites: Selected Case Studies of Poland and the Czech Republic

et al. 2021

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“…The contaminants such as heavy metals (3,4), pharmaceuticals (2), and organic pollutants (5) can enter the water through leachate. They enter groundwater and the human food chain and cause adverse effects on human health (6). In recent years, emerging pollutants in leachate from municipal solid waste have been found and raised concerns about the pollution of surface and groundwater resources (2).…”

Section: Introductionmentioning

confidence: 99%

Effects of the Municipal Solid Waste Landfill on the Quality of Water Resources in Khalkhal: A Case Study

Javanmardi

Alighadri

Parastar

et al. 2022

Avicenna J Environ Health Eng

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Transmission of leachate from municipal solid waste landfills can potentially threaten ecosystems and human societies when the landfill has no system for collecting and treating leachate. Leachate produced from landfills finds its way through the soil to groundwater and surrounding surface waters, leading to pollution of water resources. This study aimed to investigate the effects of leachate from Khalkhal landfill (a city in Ardabil province, northwestern Iran) on the quality of groundwater and surrounding surface water. During 2019-2020, 4 wells (one control well located upstream of the landfill and three wells located downstream of the landfill) and two stations of the surface water resource of the Herochai river were spots for sampling. First, we did sampling during high and low rainfall seasons in accordance with the standards. Second, we analyzed the values of some physical, chemical, and biological quality parameters according to standard methods. The sampling of the soil texture was conducted following ASTM D 422 standards. Then, the soil was analyzed at Reference Laboratory of Water, Soil, and Plant in Ardabil province. The value of most parameters measured in the water of downstream wells was lower than the limit recommended by the Iranian and World Health Organization, indicating no limitation for drinking and agricultural uses. The quality of the Herochai river water was also relatively undesirable in terms of turbidity and total coliform in some samples. Additionally, consistent with the study results, no difference was observed between high and low rainfall seasons. According to the results obtained from different parameters, Schuler and Wilcox diagrams, and landfill water pollution index (LWPI), the quality of upstream and downstream water resources of Khalkhal municipal solid waste landfill was not much different. In other words, the landfill did not affect water.

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“…Despite being considered an adequate method for the destination and treatment of urban solid waste (USW), sanitary landfills can also be potential sources of contamination. The lack of planning in the structuring of a landfill, a failure in the drainage system, or the sealing barrier can cause the leakage of leachate, a substance resulting from a complex mixture of toxic metals, water, salts, and organic matter (TOUZE-FOLTZ;XIE;STOLTZ, 2021;ZENG et al, 2021). The leachate permeates through the bottom layers and can contaminate the soil and groundwater.…”

Section: Introductionmentioning

confidence: 99%

“…The leachate permeates through the bottom layers and can contaminate the soil and groundwater. The evolution of contamination to the aquifer zone depends on local conditions such as the hydraulic conductivity, the thickness of the aeration zone, and the concentration of pollutants present in the leachate (CHOFQI et al, 2004;ZENG et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Research of Areas Contaminated by Sanitary Landfills in Brazil: A Bibliographic Review

Carvalho¹,

Kasemodel²

2022

JER

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Sanitary landfills are considered a solution to the problem of increasing solid waste generation. However, these places can become sources of active contamination through leachate leakage. Investigating these locations is necessary to identify contaminated areas and carry out remediation processes. Therefore, the objective of this study was to identify areas contaminated by the disposal of solid waste in sanitary landfills in Brazil, as well as the analyzed environmental matrices, the investigation techniques used, and the parameters evaluated. The selection of articles was based on a systematic review in peerreviewed scientific article databases (Scopus, ScienceDirect, Springer, and Scielo). Eleven studies were selected, from which the use of indirect (4) and direct (7) methods were verified; analyses were performed on soil (2), surface water (3), and groundwater (4) matrices. The main parameters evaluated were physicochemical and metal concentration. Despite the confirmation of contamination, it was found that there is no protocol used for the investigation of areas contaminated by the disposal of solid waste in these studies. The method of collection and depth of the samples may imply significant differences in the results of the physical-chemical analyses. Therefore, geophysical methods are recommended to assist in sampling planning, following sampling standards and protocols, and the inclusion of new parameters to be analyzed.

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Factors influencing groundwater contamination near municipal solid waste landfill sites in the Qinghai-Tibetan plateau

Cited by 40 publications

References 25 publications

Monitoring and Assessment of Groundwater Quality at Landfill Sites: Selected Case Studies of Poland and the Czech Republic

Monitoring and Assessment of Groundwater Quality at Landfill Sites: Selected Case Studies of Poland and the Czech Republic

Effects of the Municipal Solid Waste Landfill on the Quality of Water Resources in Khalkhal: A Case Study

Research of Areas Contaminated by Sanitary Landfills in Brazil: A Bibliographic Review

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