Investigation on characteristics of leachate and concentrated leachate in three landfill leachate treatment plants

Zhang, Qi-Qi; Tian, Bao-Hu; Zhang, Xuan; Abbas, Ghulam; Fang, Chengran; He, Ruo

doi:10.1016/j.wasman.2013.07.021

Cited by 256 publications

(91 citation statements)

References 37 publications

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“…A comparison of data reported in Table 1 with literature data [37][38][39] demonstrates that the studied leachate is characteristic of an old landfill. …”

Section: Experimental Apparatus and Sample Characterizationmentioning

confidence: 74%

Seeking Potential Anomalous Levels of Exposure to PCDD/Fs and PCBs through Sewage Sludge Characterization

2016

Sewage and Landfill Leachate

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This paper examines the efficiency of electro-oxidation used as the single pretreatment of landfill leachate. The experiments were performed on three different types of leachate. The results obtained using this electrochemical method results were analyzed after seven days of treatment. The main characteristics of leachate and a diagram of the experimental apparatus are presented. The overall objectives were to contribute to the knowledge of electrochemical treatments for the reduction of COD, BOD 5 , ammonium, and total suspended solids, and also to examine whether there was any resulting hexavalent chromium in the liquid sample. The yields obtained were considered satisfactory, particularly given the simplicity of this technology. Like all processes used to treat refluent water, the applicability of this technique to a specific industrial refluent needs to be supported by feasibility studies to estimate its effectiveness and optimize the project parameters. This could be a future development of the work.

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“…A comparison of data reported in Table 1 with literature data [37][38][39] demonstrates that the studied leachate is characteristic of an old landfill. …”

Section: Experimental Apparatus and Sample Characterizationmentioning

confidence: 74%

Seeking Potential Anomalous Levels of Exposure to PCDD/Fs and PCBs through Sewage Sludge Characterization

2016

Sewage and Landfill Leachate

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“…The Zn concentration in the experimental cell leachate was much lower than that in three other landfills at different ages in China. Zhang et al (2013) found for the landfills X, S and N that the concentrations of Zn were 17.21, 532.5 and 1,331.25 mg L −1 , respectively. In a young leachate (BOD/COD = 0.5) from a sanitary landfill, the concentrations of Zn, Cr and Fe were 827 mg L −1 , 25.7 mg L −1 and 97.7 mg L −1 respectively (Fauziah et al, 2013).…”

Section: Resultsmentioning

confidence: 94%

“…The Pb concentrations in the leachates from two landfills of different ages in China, one with 5 years and another landfill with 20 years of operation, were 11.39 and 4.56 mg L −1 , respectively; and in both cases, the pH value of the leachates was above 7.0 (Zhang et al, 2013). Gajski et al (2012) observed that the concentration of Hg and Fe in two leachate samples from Roving sanitary landfill, Croatia, was above the allowed for discharge into the environment.…”

Section: Introductionmentioning

confidence: 97%

Long-Term Characterization of Landfill Leachate: Impacts of the Tropical Climate on its Composition

Filho¹,

Miguel²

2017

American Journal of Environmental Sciences

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Abstract:The disposal of Municipal Solid Waste (MSW) in sanitary landfills produces leachate, whose composition changes depending on the microbial community and the environmental conditions. However, these changes cannot be observed in sanitary landfill because of the superposition of cells, which makes it difficult to determinate the relationship among the phases of biodegradation of MSW, the composition of the leachate and the time required for complete stabilization of the waste. This illustrates the importance of building experimental cells that simulate landfill to monitor the leachate over a long period. This study aimed to analyze the composition of the leachate generated from an experimental cell built on the Delta A sanitary landfill of Campinas City, Brazil, over 945 days. The leachate showed a transition from an acidic anaerobic phase to a methanogenic phase within approximately 100 days. By the one-hundredth day, the leachate showed a characteristically low pH, between 5.0 and 6.0 and a high Chemical Oxygen Demand (COD) and Biochemical Oxygen Demand (BOD) such as a young leachate with high biodegradability. Moreover, there was an intense leaching of the metals Cd, Fe, Pb and Mn, with concentrations higher than those allowed for the release in water bodies, according to Brazilian law. After the one-hundredth day, the leachate was characterized as stabilized. The pH increased and the concentration of volatile fatty acid, COD and BOD decreased. Co, Zn, Ni and Cu were leached. The potentially toxic metal concentrations found in the leachate also were above the values allowed by Brazilian law.

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“…Leachate may contain a wide range of inorganic, natural and xenobiotic compounds, the mixture of which can affects the plant growth (Zhang et al, 2013 It was found that leachate at higher levels (concentrations) can severely inhibit plant growth, whereas leachate at lower levels (concentration 25 %) can stimulate growth. It is reported that leachate at high levels could lead to a yield reduction and poor survival rate (Menser, 1981;Menser et al, 1983); however, the leachate at low levels (concentrations) enhanced the growth, survival and stomatal conductance of plants (Liang et al, 1999;Sang and Li 2004;Sang et al, 2006;Li et al, 2008;Zhang et al, 2013).…”

Section: Plant Growth Inhibitionmentioning

confidence: 99%

“…It is reported that leachate at high levels could lead to a yield reduction and poor survival rate (Menser, 1981;Menser et al, 1983); however, the leachate at low levels (concentrations) enhanced the growth, survival and stomatal conductance of plants (Liang et al, 1999;Sang and Li 2004;Sang et al, 2006;Li et al, 2008;Zhang et al, 2013).…”

Section: Plant Growth Inhibitionmentioning

confidence: 99%

Seasonal Changes and Toxic Potency of Landfill Leachate for White Mustard (Sinapis alba L.)

Zloch¹,

Vaverková²,

Adamcová³

et al. 2018

Acta Univ. Agric. Silvic. Mendelianae Brun.

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Landfills are the most broadly used methods for the disposal of municipal solid waste (MSW). Leachate can be contaminated with pollutants that may pose a threat to the landfill surrounding namely soil, groundwater and surface waters.. Examination of leachate composition is determinative in long-term impact of landfills on the environment and human health. Moreover, it is essential to assess such prior knowledge for prevention of negative outcomes. The evaluation of the seasonal changes of landfill leachate and rainwater composition is presented in this paper. Research samples of leachate and rainwater were collected from February till June of 2017 (still ongoing) and analyzed for pH, electrical conductivity, dissolved oxygen, series of trace elements, Subsequently the test of leachate toxicity for higher plants (Sinapis alba L.) was carried out. Up to now, the results do not indicate significant seasonal difference in landfill leachate composition, however the toxicity tests provided on Sinapis alba L. demonstrate that landfill leachates can present a significant source of contamination. This research can serve practical tools for evaluating quality and risk assessment for landfill leachate.

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Investigation on characteristics of leachate and concentrated leachate in three landfill leachate treatment plants

Cited by 256 publications

References 37 publications

Seeking Potential Anomalous Levels of Exposure to PCDD/Fs and PCBs through Sewage Sludge Characterization

Seeking Potential Anomalous Levels of Exposure to PCDD/Fs and PCBs through Sewage Sludge Characterization

Long-Term Characterization of Landfill Leachate: Impacts of the Tropical Climate on its Composition

Seasonal Changes and Toxic Potency of Landfill Leachate for White Mustard (Sinapis alba L.)

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