Change in leachate chemistry and porosity as leachate permeates through tire shreds and gravel

McIsaac, Reagan; Rowe, R. Kerry

doi:10.1139/t05-050

Cited by 31 publications

(24 citation statements)

References 11 publications

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“…The different porosity of each layer was measured after 365 days of research. Some Canadian scientists [26] established that clogging processes started from the top of all columns. Analyzing data from the Table 1, it confirms that the clogging begins with the first layer, where leachate comes into contact with solid drainage material.…”

Section: Resultsmentioning

confidence: 99%

“…An increase in the amount of tire shreds leads to a higher compression of all drainage layers. Forming a drainage layer, Canadian researchers [26] propose using less than 40% of the whole amount of the drainage layer. British scientists were testing tire shreds of different sizes.…”

Section: Resultsmentioning

confidence: 99%

“…Construction wastes are not applied for the drainage layer because of a high content of calcium carbonate, which increases the possibility of clogging processes. The studies performed by the world's scientists show that calcium carbonate, silica and iron compounds dominate in the clogging process [12,[22][23][24][25][26][27][28][29]. These elements are not the main pollutants of leachate, but they form the main compounds, which pollute the landfill leachate collection system.…”

Section: Introductionmentioning

confidence: 99%

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Research of Sustainable Use of Tire Shreds in Landfill

Bazienė

Vaiškūnaitė

2016

Sustainability

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Studies are on-going to establish the suitability of tire shreds in the landfill bottom drainage layer, to minimize clogging. Four experimental columns were constructed in which were 500 mm long and 200 mm in diameter. They were filled with different fillers and with a different amount of tire shreds. The most important problem with drainage filler in landfills is clogging. Over long periods of time in landfill operation, the drainage layer clogs (the pores of the layer become smaller and the porosity of the layer becomes smaller). The experiment was carried out for 365 days. Although the landfill for this period represents only one-fiftieth or less of the operation time, the laboratory tests found that the drainage layer bandwidth of reduction in one year can have a negative impact in the long run over time. The main elements that influence the decrease of conductivity are the total suspended solids and calcium and iron compounds. The change of these compounds was observed during the column study, where the concentration of each month in all the columns was decreasing. The results showed that the waste of rubber (tire shreds) used for creating fillers in columns provided greater porosity of the layer. It is a beneficial reason to use a rubble and tire shreds waste mix for forming the drainage layer in landfills.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Research of Sustainable Use of Tire Shreds in Landfill

Bazienė

Vaiškūnaitė

2016

Sustainability

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“…an increase in the amount of tyre shreds leads to higher compression. for forming a drainage layer, Canadian researchers (McIsaac, rowe 2005…”

Section: Qualitative Parameters Of Data On Leachatementioning

confidence: 99%

“…The researches performed by foreign scientists show that calcium carbonate, silica and iron compounds dominate in the clogging process (el-fadel et al 2002;McIsaac, rowe 2005;McIsaak et al 2000;tatsi, zouboulis 2002;zigmontiene, zuokaite 2010). the material forming a drainage layer must be made of appropriate matter and meet requirements for pressure.…”

Section: Introductionmentioning

confidence: 99%

Analysis of a Municipal Landfill Drainage Layer Using Tyre Shreds and Rubble / Sąvartyno Drenažo Sluoksnio Užsikimšimo Tyrimas Naudojant Smulkintas Padangas Ir Skaldą

Bazienė

Vasarevičius

2012

Mokslas - Lietuvos Ateitis

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Abstract. Municipal waste landfill leachate is formed at different stages of landfill operation and has a negative impact on a natural environment. According to the recently implemented waste management policy, landfill leachate in modern solid waste disposal sites has been monitored. Due to a complex composition of components for filtrate, over a long period of time, the processes of commutation in a drainable layer have been taking place, thereby reducing the porosity and permeability of the layer. Calcium, silicon and iron compounds are the main elements influencing a decrease in conductivity. Filtrate has formed in landfills and waste water and involved the process of precipitation percolating through waste. For 3 months, studies on two different drainage layers of filtration have been carried out. The obtained results have showed that for forming the landfill leachate drainage layer, a drainage rubble layer of 40% mixed with counter rubber waste can be successfully used.

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Performance Assessment of Gravel–Tire Chips Mixes as Drainage Layer Materials Using Real Active MSW Landfill Leachate

2015

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Potential of clogging for rubber tire chips, gravel and their relative performance for transmitting high strength leachate when arranged in proportionate layers of relative thickness and in random state mixes of various percentage compared to the case of used alone were studied through column experiments. Comparative hydraulic performance of gravel and tire chips in their different combinations with percentage change (reduction) in COD, TSS, Ca-hardness and TDS concentration levels for the real active high strength MSW landfill leachate with time were investigated. Experiments were performed to simulate conditions occurring at the base of all active MSW landfills, in an attempt to replicate reasonably worst case conditions. Results clearly showed that the combinations ds (scrap tire chips layer thickness)/dg (gravel layer thickness) = 0.25, 0.50 (arranged by relative thickness) and Ws:Wg = 1:3 (25 % tire chips:75 % gravel; mixed by weight friction of each component) were good in term of obtaining initially relatively free drainage. Minor reduction in hydraulic conductivity for fairly longer duration, due to lesser clogging and small reduction in COD, TSS and Cahardness concentration levels were observed for these combinations. These experimental findings may prove to be very useful for the proper design, long term performance and service life of all tire chips-gravel made drainage layers of all the active MSW landfill leachate collection and removal systems.

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Change in leachate chemistry and porosity as leachate permeates through tire shreds and gravel

Cited by 31 publications

References 11 publications

Research of Sustainable Use of Tire Shreds in Landfill

Research of Sustainable Use of Tire Shreds in Landfill

Analysis of a Municipal Landfill Drainage Layer Using Tyre Shreds and Rubble / Sąvartyno Drenažo Sluoksnio Užsikimšimo Tyrimas Naudojant Smulkintas Padangas Ir Skaldą

Performance Assessment of Gravel–Tire Chips Mixes as Drainage Layer Materials Using Real Active MSW Landfill Leachate

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