...Chen Sheng Zhang; Han Ke; Jie Hu; He Li; Liang Tong Zhan; Ji Wu Lan; Hui Xu; Yun Min Chen Air displacement technology, which injects high-pressure air to drive pore liquid, is widely used in geoenvironmental engineering. This study explores its application to dewater landfilled waste to facilitate...

...Charles Wang Wai Ng; Chuanxiang Qu; Haowen Guo; Hongqi Chen; Wei Wei; Yanmin Zhang Landfill cover systems face various uncertainties throughout their service life. Previous studies have typically analysed their performance deterministically, focusing on limited time frames. This study investigated...

...Song Feng; Anthony Kwan Leung; Liang Tong Zhan; Hong Wei Liu; Min Wang; Xing Kai Guo Vegetation has been found to improve the hydrological performance of landfill cover. However, existing studies ignore the effects of hydrogen sulfide (H₂S), which forms the toxic odour generated from...

...Jie Hu; Yun Min Chen; Wen Jie Xu; Han Ke Prediction of gas pressure development within municipal solid waste (MSW) landfills is of great importance for the stability analysis and design of gas collection systems. This study presents a fully coupled bio-hydro-chemical model for the gas pressure...

...Charles Wang Wai Ng; Haowen Guo; Junjun Ni; Rui Chen; Qiang Xue; Yanmin Zhang; Yong Feng; Zhongkui Chen; Song Feng; Qi Zhang This paper compares the field performance of non-vegetated and vegetated three-layer landfill cover systems utilising construction waste but without geomembrane...

...Han Ke; Jie Hu; Yun Min Chen; Ji Wu Lan; Liang Tong Zhan; Meng Meng; Yi Qing Yang; Yu Chao Li The assumption that the gas is a connected phase leads to underestimation of the gas pressure in municipal solid waste (MSW) landfills. In this study, the high gas pressure is shown, by way of field...

...Shi-Feng Lu; Shi-Jin Feng; Qi-Teng Zheng; Zhen-Bai Bai To describe the long-term coupled behaviour of landfilled municipal solid waste (MSW), this paper proposes a numerical model based on the theories of the conservation of mass, momentum and energy of porous media over a three-phase solid–liquid...

...Jie Hu; Han Ke; Ji-Wu Lan; Yun-Min Chen; Meng Meng The performance of vertical pumping wells in municipal solid waste (MSW) landfills can be effectively enhanced if vacuum pressure is applied to the well. In this study, a dual-porosity model for coupled leachate and gas flow to vertical wells...

...X. Fei; D. Zekkos Seven municipal solid waste (MSW) specimens with variable initial waste compositions were biodegraded in large (d = 300 mm, h = 600 mm) laboratory landfill simulators under leachate-recirculation-enhanced anaerobic biodegradation conditions to investigate changes...

...X. S. Shi; I. Herle; D. Muir Wood In open-pit coal mining, the excavated clayey cover is dumped without any compaction to form a landfill with a relatively open structure. In this type of material, water flowing through the landfills prefers the inter-lump voids, which have a permeability...

... industry, particularly in the construction quality assurance of landfill clay liners. The purpose of this paper is to evaluate an alternative approach of measuring permeability of fine-grained soils benefiting from accelerated time scaling for seepage flow when testing specimens in elevated gravity...

...G. SINNATHAMBY; D.H. PHILLIPS; V. SIVAKUMAR; A. PAKSY Desiccation crack formation is a key process that needs to be understood in assessment of landfill cap performance under anticipated future climate change scenarios. The objectives of this study were to examine: (a) desiccation cracks...

...V. KRASE; S. BENTE; U. KOWALSKY; D. DINKLER Conceptual modelling of municipal solid waste landfills is vital for prognosis of the long-term development and the assessment of risk potential. Landfills are considered as heterogeneous porous structures, in which flow and transport processes of gases...

...M.K. SINGH; I.R. FLEMING An understanding of the stress–strain behaviour of landfilled waste is important in landfill design. Based on evaluation of numerous strain–strain curves obtained from triaxial compression testing of samples of municipal solid waste (MSW) ranging from fresh to degraded...

...N. Dixon; R. W. Whittle; D. R. V. Jones; S. Ng'ambi To assess the long-term integrity, and hence adequate performance, of landfill lining systems the designer must consider interaction between lining components and the waste body. Information on typical ranges of waste mechanical properties...

...R. K. Rowe This lecture describes the latest findings with respect to the long-term performance of modern municipal solid waste (MSW) landfill barrier systems. Field data relating to the clogging of leachate collection systems and the latest techniques for predicting their performance are examined...

... and an induced change in void phase volume, the combination of which has consequences for subsequent mechanical behaviour. In the case of landfilled waste, the mechanical consequences of biodegradation can be troublesome with long-term settlements ranging between 25% and 40% of original waste height (Bjarngard...

... décomposition est capable d’interpréter le processus parfois épisodique de la déformation volumétrique dans une matière décomposable ressemblant à de la terre. landfills constitutive relations environmental engineering organic soils settlement theoretical analysis A more fundamental analysis...

.... It is shown that this parameter may be found from a measurement of damping at known strain. The method is tested on a highly deformable landfill. Initially two loaded skip tests were carried out to measure the deformation of the landfill. Shear wave velocities were obtained by a surface wave technique...

...A. Paksy; W. Powrie; J. P. Robinson; L. Peeling A laboratory investigation was made of the clogging of landfill drainage systems due to microbial growth in anaerobic conditions. The factors addressed included the flow rate and composition of the leachate, the saturation conditions...