Landfill aeration within the scope of post-closure care and its completion

Monitoring transitory profiles of leachate humic substances in landfill aeration reactors in mesophilic and thermophilic conditions

“…This provides more immediate benefits, such as the rapid reduction of biological oxygen demand (BOD), ammonia, methane and odor compounds [4,[6][7][8]. In the long term, landfill stabilization is achieved more rapidly by an factor of 2 ~ 4, thereby lowering the cost for post closure care, and eventually earlier beneficial reuse of the land may be possible [6,9,10].…”

“…Due to intensive aerobic conditions, exothermic reactions release energy bringing the temperature in the landfill body up to 60 °C [9,17]. On one hand, microbiological activity and substrate degradation rate could be enhanced by the increased temperature [18].…”

Evaluation of monitoring indicators for the post-closure care of a landfill for MSW characterized with low lignin content

“…Further investigation is needed to determine the target values of these indicators which can be used for full-scale low-lignincontent MSW landfills through larger-scale experiments, such as those described by Prantl et al (2006) and Ritzkowski and Stegmann (2013).…”

Porous Structure of Municipal Solid Waste Incineration Bottom Ash in Initial Stage of Landfill

“…Municipal solid waste incineration (MSWI) residues constitute the main material in final waste disposal, accounting cineration residues are high in calcium (Ca) content and may be expected to undergo mineralization and changes in physical microstructure, with carbonation by carbon dioxide (CO 2 ) generating mainly such minerals as calcite (CaCO 3 ), ettringite (3CaOAl 2 O 3 CaSO 4 ·32H 2 O), gypsum (CaSO 4 ·2H 2 O), and anhydrite (CaSO 4 ) [6]- [11]. These changes are known to result in the gradual formation of water pathways within the landfill layer [12] [13] [14]. Rosqvist and Destouni performed tracer experiments in undisturbed landfill waste samples and showed that approximately 55% -70% of the infiltrating water followed preferential flow paths [15].…”

“…They are porous, with a small pore size and large pore density, and exhibit capillarity that becomes high with decreasing pore size [12]. Because the MSWI bottom ash particle surface is generally hydrophobic, however, it is believed that water either does not penetrate to the particle interior (and thus is not absorbed), or penetrates only over an extremely long time span.…”